On Monday, 21 September 2020 at 11:40:03 UTC+1, Nick Gardner wrote:
On 21/09/2020 10:23, Graham Easterling wrote:
20C @ Cardinham 10:00, and at Lands End. Cooler at my Penzance site due to the stagnant air and shade from trees at this time of year, so it's a bit slower to warm. 17.7C here @ 10:00. I'm in a tree protection area, so the lungs of the planet are more important than me getting a rather more accurate temperature! Shame the Amazonian rainforest will soon cease to exist, I doubt is a couple of sycamores shading my screen .
Same here Graham at this time of year. I have several ancient oaks at
the end of the garden and they cast a shadow until mid-morning over the
entire garden. And in calm conditions like these, the whole garden sits
in a pool of cool air. The difference between the front and the back of
the house until mid-morning can be quite stark.

Two-thirds through and what a lovely month it has been so far. Warm,
very dry and with above average sunshine. Sadly, all-change from
Wednesday onwards as summer starts to fade into autumn.

1st - 20th
Mean Max: 21.8ºC
Mean Min: 10.3ºC
Mean: 16.1ºC (+1.1ºC)
Rain Total: 4.8 mm
Max 24 hrs: 4.4 mm 6th
Total Monthly Sunshine: 147.0 Hours.

Sunshine so far accounts for around 57% of the total possible for this
date in the month.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

Similar here, as you would expect the daily range is less, other than that.