First single digit max temp of season 24-25

[damianslaw]

Started this thread quite early, as there is a good chance that some parts of Scotland might struggle to achieve a max of 10 degrees or more Wednesday, Thursday and even Friday.

Here tend to have to wait until October to deliver, in some years November - just like air frost.

Will be interesting to note first single digit maxes in this thread, a true sign of Autumn. 

[WYorksWeather]

Expecting highs of 12-13C here on Wednesday and Thursday at the moment. Very cool for the time of year, some 6-7C or so below average.

[I remember Atlantic 252]

 WYorksWeather I'll be expecting many of them between Dec and Feb, and less cold nights than this week

[WYorksWeather]

 I remember Atlantic 252 You'd probably be correct as well. The polar vortex is currently anomalously weak and expected to remain so for the next few weeks, so early season cold outbreaks and wild swings in temperature are probably more likely than usual. The difficulty as always in the UK is getting these synoptics between November and March!

 

[damianslaw]

 WYorksWeather Could be an autumn with a number of cold northerly shots perhaps... high pressure sometimes to our west, south, east and nw. 

[WYorksWeather]

 damianslaw Yeah it's certainly possible - quite a few model scenarios playing around with this idea as well - highs building east turning warm or very warm, then dropping back NW and much cooler.

The thing that is unusual is relatively few runs at the moment are showing 'normal' autumn conditions of a strong jet firing low pressure in from the west or south-west. It's a lot more blocked than we often see at this point.

[cheese]

I think the average first sub-10C high here over the past decade has been in early November. Could happen in late October too (as it did last year) but that's becoming increasingly less common. An October like 2022 didn't have a single high below 13C!

Edited September 10 by cheese

[cheeky_monkey]

usually get a few single digit max towards the latter part of Sept here,,,first ice days start to appear from Mid October..by the time you get to Nov you are lucky most years if you see a +10c day again before the following April 

[Aleman]

Altnaharra's hourly daylight high was 9.6C at 10am (though it did manage 10.0C at 2am). A few independents on Orkney and Shetland did not make 10C.

https://www.ogimet.com/cgi-bin/gsynres?ind=03044&lang=en&decoded=yes&ndays=2&ano=2024&mes=09&day=10&hora=14

 

Edited September 10 by Aleman

[dryfie]

Steady up!   Those are hourly Altnaharra temperatures, not maxima.   There are at least 60 additional readings each hour when a higher max may have been recorded, not divulged until after 1900.   Their lowest Sept maximum is 8.7 on the 26th 2007.

[dryfie]

Altnaharra ended at 11.4,  Fair Isle 10.0,  Loch Glasgarnoch 9.3.   Cairngorm 8.4.   Some of the Scots 99/// sites may also be below 10.

[damianslaw]

 Aleman Thanks for stats. Aberdeen may struggle much above 10 degrees next 3 days.

[hillbilly]

There was a maximum of 9 deg in southern England on 15th September 1986.

 

[damianslaw]

Did anywhere stay below 10 degrees today? 

[Derbyshire_Snow2]

 damianslaw I reckon the highest towns and villages in the Peak District it was showing 13c in Sheffield

[Aleman]

Loch Glascarnoch showed a high of 8.9C at 2pm yesterday but, again, this was on hourly samples.

[B87]

Realistically for London, mid November onwards.

[Summer8906]

Widespread in Southern England, I'd say first 10 days of November.

There does seem to be more tendency for cool/cold than of late so I'm tempted to suggest it'll be early this year.

Also going for first southern England widespread air frost in Oct this year.

[damianslaw]

Parts of N Scotland unlikely to top 9 degrees tomorrow. 

[Aleman]

There looks to have been a number of single figure highs along the northern coast of Scotland this week, e.g. Melvich Bay looks to have last reached 10C on Monday.

 

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[Aleman]

If Melvich Bay does not suddenly warm up in the next hour or two, its high today will be 7.7C.

Edited September 27 by Aleman

[damianslaw]

Yes suspect many spots in N Scotland have tallied there first single digit max this week.

[Harry233]

We’ve came close with a few days annoyingly just stayed above 10.C. Been a very cool end to September but equally been very pleasant with some lovely cool sunshine.

I’d imagine a few places in the highlands have failed to reach 10.C recently 

[IcySpicy]

Here in Estonia it's today. 8C and raining. We usually have our first single digit high in late September or early October. 

[Durham Weather]

The wettest day in September at Durham (26th) came close to a single figure max, but stayed annoyingly above at 10.6 degC.

Last year it was 4th November before we had a single figure max. (9.4 degC).

In 2019, the first single digit max was on October 1st. The month was cold and wet.

Edited October 3 by Durham Weather