Wet, wet, wet. After tomorrow, anyway. Low pressure is going to arrive and stall over the UK for several days – it will be tricky to forecast rain timings more than a day or two in advance as the low pressure area spirals around. But if you just take out of this forecast that it will rain a lot, you’ll have the idea!

Thanks to Jo for the photograph.

This evening and tonight will be mostly cloudy, a weak weather front will bring some very occasional bits of showery rain, the odd heavy burst possible – but it will be dry most of the time. Around 13’C.

Tuesday morning will be mostly cloudy, the odd bit of rain possible but mostly dry. Sunshine will spread from the west in the afternoon, some cloud still around but pleasant. 18’C. Reasonably clear overnight, though some high cloud, down to around 7’C.

Wednesday sees the large and complex low pressure system that will dominate our weather for several days approach from the north-west.

The morning starts bright, but cloud will gradually thicken during the morning as a weather front approaches – the odd shower possible before it does. More persistent rain arriving either lunchtime or early afternoon, clearing roughly mid-evening, some heavy bursts possible. Reaching around 17’C and becoming quite windy. Variable cloud overnight, the odd shower possible, down to around 10’C.

Thursday will see some sunny spells, with a small chance of a shower. Around 16’C. Later in the afternoon and into the evening, the shower chance increases and they could be heavy, though some uncertainty on this aspect. Uncertain overnight but a good chance of either heavy showers or general heavy rain.

By Friday, it looks like a quickly deepening centre of our low pressure will develop either over southern England or northern France.

Prolonged heavy rain is very likely, strong winds are also likely – but too early to be sure on the wind strength and also the timing of the rain. Temperatures around 12’C. Further spells of heavy rain overnight are probable – but again, no idea on timing of rain for Friday or Saturday yet.

Low pressure will still be firmly in charge on Saturday but impossible to know the position of weather fronts at that stage. Most likely there will be heavy rain at some point – a very small chance of a mostly dry day, a small chance that it could pour down all day – most likely something in between with spells of heavy rain at some point. Around 12’C, give or take, probably windy. Same story overnight!

Sunday is more of the same. Still the same area of low pressure that arrived on Wednesday circulating in the general area of the UK. Impossible to know where weather fronts will be, all I can say is that there is a good chance of heavy rain at some points day and night. Around 12’C and likely windy.

Suggestions that Monday might be drier (not going to suggest dry yet!) as low pressure slips away either east or south-east.

The next area of low pressure probably arrives on Tuesday, bringing more wind and rain, and probably hangs around for a while again.

With all the uncertain on rain timings, I will try to do morning updates before work, nearer the time, though Thursday’s forecast should clear things up.

Forecasts could upgrade to see some very heavy rain or gales at times, we could easily get stuck under bands of heavy rain for 12+ hours which may bring some localised flooding also.

One of the main models I follow is suggesting over 60mm of rain to have fallen by next Monday evening in our area – these charts of accumulated rainfall often overexaggerate but the potential is there for some high totals of rain if we do get stuck under slow moving heavy rain. The average for the whole of October is around 65mm I think.

A chilly weekend ahead and becoming much more unsettled next week as the jetstream fires up. At least the weather seems to sum up the national mood a bit better than sunshine right now!

Thanks to Chickena for the photograph.

Tonight will be rather cloudy with the odd scattered shower, more likely towards dawn. Some clear spells also, down to around 7’C.

For Friday we have low pressure close to our east, bringing a chilly northerly flow – though a ridge of high pressure waiting out west.

It will start cloudy, perhaps a bit of showery rain. This gradually clears east to be replaced with increasing amounts of sunshine. Feeling rather cold in a strong northerly wind, 14’C. Clear skies overnight and that strong northerly wind continuing, down to around 6’C. Proper coats!

Saturday starts sunny but notably chilly. It looks like cloud will spread down from the north during the afternoon with a bit of showery rain. 13’C at a push and the northerly wind continuing – though not as strong as Friday. Some clear spells at first, but cloud tending to thicken from the east later in the night, perhaps bringing a bit of rain too, down to around 8’C.

Sunday is uncertain. The same low pressure from Thursday still very close to our east – the huge area of high pressure over Russia blocking its progress.

I think a mostly cloudy day is likely, but the uncertainty comes from exactly what the low pressure to our east does – latest models suggest that it tracks back west towards us and brings a spell of rain. Yet this could just be cloud with the rain having fizzled out – and a bright day is still possible. I am certain that it will again feel rather cold in the northerly wind, close to 11’C if raining, though 15’C if we get some brightness. I will endeavour to update nearer the time. It isn’t like I have anywhere to be going.

Monday looks rather cloudy, but there should be some sunny spells at times, more likely in the afternoon. We’ll have cut off the chilly air source and in a westerly flow be reaching around 18’C. Mostly clear skies overnight, around 10’C.

I’m not massively confident on Tuesday’s forecast, but broadly sunny spells with a chance of showers or showery rain pushing up from the south-west later – bit of an unknown factor that.

Wednesday then sees the next area of low pressure arrive on a fairly strong jetstream. Either a band of rain, or areas of showers, windy too. Around 16’C.

Thursday onwards will be dominated by this area of low pressure – it won’t be able to go anywhere due to the huge block of high pressure over Russia, and will keep being fed energy from the Atlantic.

Most days from Thursday seeing either spells of heavy or very heavy rain, or heavy showers – thunder possible also.

The potential is there for gales, perhaps severe gales – though at this stage it is too far out to pinpoint anything, but the set-up does make a spell or two of damaging winds very possible.

As I mentioned, this low pressure isn’t going anywhere. The week after will again be unsettled, strong winds at times, heavy rain some days, showers other days.

Towards the middle of October there will be more settled days and I’m hopeful for some warmer weather from around mid-month. Though a long time away, and so far my autumn seasonal forecast has been a disaster, so don’t expect too much.

Further away, there are suggestions that if La Niña stays weak or moderate strength at most, then the chance of some colder weather for the first half of winter is very possible (with mild second half). But La Niña could well turn out to be strong, and in that case something similar to last winter looks more likely. Way too early to tell, but just a bit of hope for coldies.…

Tomorrow is the last day of the September warmth. Much cooler weather follows, with showers. Though I am still expecting some October warmth.

Thanks to Katharine for the photograph.

Tonight is a clear night, down to around 14’C. Fog possible by dawn.

Any fog patches or low cloud will soon lift on Tuesday to bring long spells of very warm sunshine. A bit of cloud at times, more so late in the day with a small chance of a shower. We should squeeze 25’C. Still a small chance of a shower in the evening, some general showery rain pushing up from the south-west after midnight. A mild night at 15’C.

Wednesday will be rather cloudy with rain at times. Some of the showery rain will be heavy, but there will be dry periods too – and still a bit of sunshine. Around 16’C and breezy at times, feeling cooler by evening as the cold front clears. Chilly overnight with clear spells for a time, down to around 7’C. Further heavy showers arriving before dawn, perhaps a rumble of thunder too.

Thursday sees low pressure well in charge – though with a strong block of high pressure over Russia, the low pressure won’t be moving through quickly.

Thursday starts with those very early heavy showers, then after that it is a case of sunny spells and scattered, blustery showers. Showers could be heavy with a rumble of thunder, but some places may miss them. Windy and cooler, we may squeeze 15’C but it will feel lower than that. Fairly cloudy overnight, quite windy, one or two scattered showers also. Around 8’C.

Friday sees the low pressure creep east allowing a fairly cold northerly flow, for the time of year. Decent sunny spells though, but feeling chilly in the wind – 14’C but feeling much less. A few scattered showers also, most likely light and less than recent days. Clear and chilly overnight, winds lessening somewhat, down to around 5’C.

Saturday again looks on the cool side with this northerly flow, but there will be decent sunny spells also. It should be dry, but I’m not 100% confident yet. Around 14’C.

Sunday isn’t really clear yet, it looks like a weak weather front will bring cloud and a little bit of rain for a portion of the day, with sunny spells either side – but it isn’t certain yet. What is certain is that it remains chilly, 14’C at best.

Next week should see temperatures pick up a bit, but it will be a changeable week with wind and rain at times – roughly 3 unsettled days, 2 settled days kind of pattern.…

May 2020 redux. Peak heat on Tuesday though remaining warm or very warm throughout.

Thanks to Paul for another excellent photograph.

Tonight will be a warm night for September, eventually getting down to around 16’C and a little humid also. Clear skies.

For Tuesday we continue the southerly flow, low pressure quite far to our west and heading south, high pressure close to our east.

Tuesday will be another hot and sunny day, with some high cloud making it a little hazy at times. We will reach at least 28’C, 30’C not out of the question. Another warm night under general high cloud, dropping to 17’C.

Wednesday sees high pressure develop further north which switches the flow to an easterly. Still on the hot side, and still lots of sunshine. A bit of cloud and reaching around 26’C. Quite cloudy overnight though tending to thin by dawn, 14’C.

Thursday likely starts cloudy but this should fairly quickly clear to long spells of sunshine in a fresh easterly breeze. Temperatures down on what they were but still warm, 21’C. Clear skies overnight, down to around 12’C.

Friday will see long spells of warm sunshine. Somewhere between 21’C and 25’C depending on the exact source of the roughly easterly breeze. Mostly clear overnight, down to around 12’C.

Very minimal changes for Saturday, high pressure to our north, low pressure to our south meaning an easterly flow. The low to our south just edging a bit further north towards us – the same low pressure that is currently to the west of the UK as I write now, which heads south to Portugal then starts to drift north again by the weekend.

Likely a bit more cloud at times for Saturday but there should be more good spells of sunshine. Probably a tad less warm, between 20’C and 22’C. A fair amount of cloud around overnight, around 13’C.

Sunday is uncertain at this stage. The low pressure to our south should be that bit closer and will bring a risk of thundery showers or rain. Yet this could remain to our south, and we stay sunny. Warm either outcome.

Next week probably starts warm – the chance of showers unknown at this stage, but possible.

Not keen on forecasting any further into the future at the moment due to the amount of tropical storm/hurricane systems towards America and the uncertainty they add to the general atmosphere.…

Mostly dry, sometimes sunny and becoming hot by Monday.

Thanks to Tara for the photograph.

Tonight sees clear spells at times, down to around 8’C so a little chilly.

Friday sees high pressure to the south, low pressure to the north.

Generally sunny spells and cloudy spells, sunshine slightly more likely during morning and late afternoon, though no real set pattern expected. Feeling warm, around 21’C. Clear spells overnight though more in the way of cloud by dawn, around 12’C.

For Saturday we have a very weak weather front over us, mostly bringing cloud but there might be the odd spot of light rain. The sun will also break through the cloud at times, more likely morning and especially late afternoon onwards. Still reasonably warm, around 21’C. Cloud continuing to thin overnight, down to around 12’C.

Sunday sees a major change as the jetstream buckles and allow hot air to start spreading north.

I do bang on about hurricane season often causing unexpected changes in the weather patterns – a week ago I was expecting the coming weekend to become cooler and unsettled, yet the opposite is happening. I believe this change in forecast being because of the strong typhoon that hit Japan/Korea and the ripple effect of that interacting with the jetstream has caused the jetstream to buckle affecting us downstream in the UK. I think this is what has happened but I haven’t had the time to look into it properly.

Sunday will therefore see good sunny spells. There will be a bit of cloud around, but generally a very nice, very warm day. Around 24’C. Around 12’C overnight in clear skies.

Monday looks gloriously sunny. It will be hot, 28’C will be reached, but 30’C is possible. A warmer night than of late, minimum of 16’C.

Tuesday should remain hot and sunny, but fresher air will likely be starting to push in from the west by the end of the day. A bit of afternoon cloud and a small chance of a shower later. Around 28’C. Small chance of a shower or even a thunderstorm overnight, around 15’C. Fog possible by dawn.

Things quickly become very uncertain from here. We’ll have low pressure close to our west – some model output moves it south towards Portugal which would keep the warmth, but also give us a chance of showers.

Other model output takes the low pressure across the UK, bringing wind and rain – once it interacts with the jetstream.

Said jetstream pattern will be key (and normally is) to our weather for the end of next week – and the pattern is very uncertain, mostly due to the amount of potential tropical storms and hurricanes over the Atlantic towards America.

I think the most likely outcome for Wednesday is that it remains warm or very warm, but a chance of heavy showers, possibly thundery.

After that, well uncertainty is very kind. Perhaps the slightly more likely outcome for Thursday onwards is that it remains warm or very warm, with heavy showers or heavy rain at some point between Thursday and Sunday.

That’s about the best I can do at the moment. I like to be able to forecast 7-10 days, but 5 days is really the limit at the moment.

Have a good weekend. And enjoy the sunshine!…

Bonus September warmth ahead.

Thanks to Tara for the photograph.

Tonight will be cloudy and mild, a spot of drizzle possible, 15’C.

Tuesday will be mostly cloudy. There should be some bright or sunny spells later in the afternoon and it will be warm, 22’C – though a bit more sunshine and we could make it to 24’C. Mild with variable cloud overnight, 16’C.

Wednesday will again be mostly cloudy. There will be a bit of brightness in the morning, during early afternoon there will be a bit of patchy rain too, and then something sunny to end the day. Warm, around 22’C. Clear skies overnight, down to around 10’C.

Thursday will see more in the way of sunshine, but fresher air around following Wednesday’s weak weather front having cleared south. Some fair weather cloud, otherwise fine, 18’C. Clear spells overnight, down to around 11’C.

Friday will be similar, some decent sunny spells but also some fair weather cloud, especially in the afternoon. Around 19’C, maybe 20’C. Fairly cloudy overnight, 20’C.

The forecast for the weekend is rather different from what I was expecting a few days ago.

Saturday looks fair with sunny spells, a bit breezy but otherwise pleasant. Around 19’C, though a small chance of something warmer.

Sunday sees high pressure building over us, allowing a warmer flow. Sunny spells and very warm – perhaps quite hot, around 24’C – 26’C.

Next week likely starts quite hot. 30’C would not be impossible for Monday/Tuesday, though something closer to 26’C to 28’C more likely.

Likely to see more in the way of showers and more normal temperatures for the latter part of next week, but uncertain at this stage.

September is always tricky to forecast more than 5 days away due to it being hurricane season, and the added complexity they bring into the mix – and it really is the peak of a very busy hurricane season in the Atlantic, so do take anything after about 5 days away with a larger pinch of sea salt than normal.…

A bit of cloud. A bit of sun. A bit of rain. Not a very interesting few days – but warmer next week.

Thanks to Tony for the photograph.

This evening sees the last dribs of rain sink south, it will be quite cloudy overnight but some clear spells at times. Down to around 13’C and feeling a bit fresher than today.

Friday starts bright – quite cloudy but some sunny spells. Some rain will develop late afternoon and more so in the evening. 19’C. Mostly clear and dry overnight, once evening rain clears, down to around 11’C.

Saturday morning sees sunny spells. Cloud will bubble up and there will be more cloud than sunshine in the afternoon, but remaining bright. One or two scattered showers, shouldn’t be too heavy if you catch one. A north-westerly breeze so not especially warm, 18’C. Variable cloud overnight, down to around 10’C.

Sunday will see sunny spells. Cloud will bubble up with a risk of heavy showers – not everywhere seeing one, but a greater chance than on Saturday, and likely heavy too. A touch warmer, 19’C in light winds. Clear spells overnight, down to around 10’C, a small chance of fog patches by dawn.

Monday sees high pressure building more extensively from the south-west and introducing warmer air too.

Any early fog patches will quickly clear to leave a sunny Monday morning. Quite a lot of cloud bubbling up during the afternoon but remaining pleasant enough. 20’C. Clear for a time overnight but cloud thickening later, 13’C.

Tuesday is uncertain at this stage in terms of cloud amounts – certainly a risk of a rather dull and cloudy day, but at worst there should be some sunshine. A much sunnier day is possible, just too close to call at the moment. Either 18’C or 22’C, depending on sunshine amounts.

Wednesday probably has some low cloud again at some point, but overall looks most likely to see some good sunny spells. Again, just uncertain on cloud amounts right now. Around 23’C, assuming good sunny spells.

Thursday should be another reasonably sunny day – some cloud around again, but more in the way of sunshine. Temperatures dropping a bit to around 20’C, perhaps a shade under.

By Friday it looks like cooler and more unsettled conditions will start to spread down from the north-west. We might squeeze another fine day in – the timing of the unsettled conditions arriving isn’t certain at this stage.

Next weekend therefore looks like it will be cooler, with at least some showers and strong winds. Not 100% in stone, but likely.…