Thought this thread was probably overdue. As I've said before, I think the low temperatures could turn out to be more exceptional than any snow. The synoptics for some ultra low temps are about as good as they can possibly get. I also think it helps that we are so close to the winter solsdist and will have snowcover in Scotland.

Double digits should be easy as will ice days. So when do we reckon we will see the first -20C by night and first double digit maxima by day (if at all)?
 

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Nothing very low last night, certainly not as low as some of the models suggested.

-7.3 at Pershore and -7.2C at Benson are the lowest I have seen from low-level sites last night up to 6am.

Benson actually dropped to -8.2C later in the morning, and Pershore to -7.7C.

Northern England and southern Scotland seems to be the cold spot today with Warcop Range currently -2.6C at 1pm.

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Thought this thread was probably overdue. As I've said before, I think the low temperatures could turn out to be more exceptional than any snow. The synoptics for some ultra low temps are about as good as they can possibly get. I also think it helps that we are so close to the winter solsdist and will have snowcover in Scotland.

Double digits should be easy as will ice days. So when do we reckon we will see the first -20C by night and first double digit maxima by day (if at all)?
 

If only getting an ice day was as easy as you make it out to be.

It should be borne in mind here after all, that an official ice day has not been recorded at Edinburgh Gogarbank since 1 March 2018 which was at the peak of the Beast from the East event that was going on then (when we were under what is still, our only red warning to date for snow).

In addition to that, we are not going to get an ice day here today either as the temperature at Edinburgh Gogarbank had already jumped up to +2.8°C as at 1pm GMT (13:00 UTC) this afternoon.

So far this winter, we haven't even been able to get a daytime maximum temperature of 5°C or less, let alone one which is actually below freezing.
 

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-8.9C in shap last night. 

UKV seemed fairly accurate for this morning. It doesn't produce notably low temperatures until the weekend, with minus teens from Sunday morning onwards in the Highlands.

 

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I do agree the weekend will really herald in the low temps. By then the ice days should become widespread.

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-8.9C in shap last night. 

Missed that one,. Must have been quite late on in the morning as the minimum to 6am was -7.2C. Lowest hourly reading was -8.5C at 8am.

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Widely 0-2C tommorow according to AROME.
Ice days more likely in central and western areas.
 

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Nightime cold also really gets going by saturday night.

-21C in the highlands according to the 6Z UKMO

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-5.1c here in West Wiltshire today at 08:30

However in shady areas, frost has stayed on ground and roofs all day, and not likely to go now as sun now too low and temperatures rapidly falling again  (currently 1.9c)

First all day visible ground frost of season.

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Today so far: the low was -2.5°C this morning, with a high of 1.2°C. It's aleady back below freezing now and the Sun hasn't even properly set yet.

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Nightime cold also really gets going by saturday night.

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-21C in the highlands according to the 6Z UKMO

There was some discussion about this model (UK Global model) in the Model Output Thread. Michael posted a chart valid for 0400 this morning predicting -15C in the NW Highlands. Actual minima from weather stations in the area were about -3 or -4 which is close to what the UKV predicted. The model didn't really pick up on the real "cold spot" which was the Southern Upands to Cumbria where -8 to -10 was recorded (coldest was -9.9C at Leadhills according to Lee - Highlandweather.)

UKV comes onboard with these low temperatures from Saturday night / Sunday morning onwards with something like -16 to -18 each of Sat/Sun, Sun/Mon and Mon/Tue somewhere in the Central Highland or NW Highlands. As ever it will all depend on the gradient wind and cloud cover - all of these areas will have sufficient snow cover and low daytime insolation to allow the cold pools to develop in the glens.

A fascinating week ahead!

 

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Overnight min -6.3.  

Only got above freezing for 2 hours in my garden (max +1.5c) - very unusual when there's no snow cover or fog.   Already back down to -2.5c (and falling) at 15.50

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It dropped to -4C last night here and there is still thick white frost on the lawn. The sun sets in a couple of minutes and the temperature will soon plunge I reckon.

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Afternoon all, another new joiner who has been lurking for far too long. Was between -6 and -7 here when I took the hound outside this morning, according to the thermometer on the shed (not trying to compete with Jiries)
I am located about a mile from the aerodrome where the readings for Redhill were once sourced so we do sometimes record low minima here
Jason
Salfords, Surrey
 

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-7c at Hurn this morning which is quite an impressive minima for the first real frost of the season and the south coast location.

Afternoon all, another new joiner who has been lurking for far too long. Was between -6 and -7 here when I took the hound outside this morning, according to the thermometer on the shed (not trying to compete with Jiries)
I am located about a mile from the aerodrome where the readings for Redhill were once sourced so we do sometimes record low minima here
Jason
Salfords, Surrey
 

I used to live in West Ewell 35m ASL and it get often very low temperatures and like frost hollow area because it tell when you drive from West Ewell to Redhill it go uphill all the way to A217 then go higher up to Kingswood then deep drive back down hill to Redhill after M25 J8. Stupid MetO removed the station bcause it was interesting station that time.  I often reach -10C most winters even mild winters from a northerly or a frosty spell.  Nowadays it not much low in Nuneaton which is higher up over 130m my home now so no frost hollow.  -4C in here this morning but did managed to get to -10C on snow surface temps back in Jan 2021 at Galley common after the 24th snowfall event.

If we were get snow here as predicted before and then clear tonight I would able to record -10 to -15C on the snow surface instead of grass min and air temps perhaps -8C to -10C.  That what i am after snow then very cold night afterwards but this spell not offering anything so far.

Just for the record Epsom lowest record is -24C back sometime in 19th Centery and 35C in Sept 1911.  They been shut down by MetO and deleted the record both due to interesting figues just like Redhill.    Perhaps Redhill had reached -25C or so same time?

 

Benson below -7C again already. 

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-6.3c this morning

-6.4c this evening

Record temp for year broken twice in a day, here.

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On these cold nights the temperature often seems to dip rapidly soon after sunset but then start rising again by about 8pm. Presumably some sort of mixing going on?

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