They say the darkest hour is right before the dawn

[SteamyTea]

Seems my coldest hours is today.

Now I know that my temperatures are very tame compared to most, but a 1.7°C drop, to -1.4°C, in 1 hour 18 minutes is quite impressive.

 

30/11/23 06:23	0.25
30/11/23 06:29	0.187
30/11/23 06:35	0
30/11/23 06:41	-0.125
30/11/23 06:47	-0.312
30/11/23 06:53	-0.562
30/11/23 06:59	-0.812
30/11/23 07:05	-0.937
30/11/23 07:11	-0.937
30/11/23 07:17	-1.125
30/11/23 07:23	-1.187
30/11/23 07:29	-1.312
30/11/23 07:35	-1.25
30/11/23 07:41	-1.437

[ToughButterCup]

That temperature contrast (change) over time is remarkable. 

I used to fly microlights before building our place. Occasionally we'd fly through an inversion a few thousand feet above ground level: the temperature difference was very noticeable. Often dirty air was trapped under the inversion - sometimes to the extent that you could taste the difference in the air breathed, often it was accompanied by a real decrease in visibility.

Air masses are interesting things.

[SteamyTea]

It is an ideal time to check the triple point temperature of water.

 

https://youtube.com/shorts/qZ2_x5F-UH4