In a cool airmass behind the weekend's cold, wet stuff, under clear skies and light winds, in dry air due to high surface pressure, with a frail NNWly drift, parts of S and C Britian are due for a very cold September night. Much of this area (low lying) is Beeb forecast down to between 0 and 1 C. Fleeced the tomatoes and nasturtiums; moved aubergines and tropicals in. 

The harvest moon looks amazing.

Good thread - it will be interesting to see what we get tonight.

Benson recorded -0.6C this morning. Similar figure likely tomorrow morning.

Other southern stations to look out for that usually record low figures are Bournemouth AP (1.2C this morning) and Farnborough (1.6C this morning).

Farnborough leading the way tonight for southern counties. Already down to 3.2C

Elsewhere Sennybridge and Katesbridge both at 2.1C

https://www.weatheronline.co.uk/weather/maps/current?LANG=en&CONT=euro&LAND=UK®ION=0003&SORT=3&UD=1&INT=06&TYP=tminboden&ART=tabelle&RUBRIK=akt&DATE=1537851600&CEL=C&SI=mp 

And a few places still at zero (air temperature) right now - Farnborough, Southampton, Charlwood, Senneybridge, Shobdon and Capel Curig.

The low IMBY was 4.1C at half 11 last night. It's only 4.3C now, mind you... it felt pretty cold this morning!

3.1c at 6am was the lowest here.  Surprised I didn’t have to defrost my car windscreen but hubby had to do his when he finished his night shift 15 miles away. 

A frost has appeared on the playing fields at the school where I work - I estimate it's a degree or so colder here in Sittingbourne.

Frost on shed roof this morning.. It's been many a year since I last saw frost in September.

Down to around 2.5C overnight.

The shed roof is frosted this morning. The wall thermometer say 3C so I assume in the river valley down the road there will be a noticeable frost which is early in the season for here.

And yes the moon was impressive last night as it rose in the east and equally impressive as it set a couple of hours or so ago.

3.1c  low here

Kew Gardens Met Station 1.9C at 07:00

Just as an aside, the minimum at Katesbridge on Monday morning the 24th was -2.9C and wasn't the first air frost of the season there either. Much scrapping of frost on windsreens yesterday morning.....Autumn has well and truely arrived. 

Can't remember last time it got that cold in September.

https://www.wunderground.com/personal-weather-station/dashboard?ID=IPICKERI5 

We had more wind and only got to +4.8C

I got down to 3.5c earlier this morning 

had some ice on the windscreen this morning. Earliest I can remember for many years. Perhaps an omen for a cold winter to come

been thinking this for a few days, everything seems to be ahead of the norm in terms of whats appearing in the charts, the feel in the air etc.

We're used to our seasons starting a month or two late, this year the seasons obeying the calendar.

3.4c Lowest Monday 24th.

2.8c Lowest Tuesday 25th.