Summary for December 2018

Colder, drier and duller than normal. Very harsh frost (for here) on the
5th and an unusually high number of air and ground frosts, though most
were slight. No rain recorded until the 18th and a high amount of
sunless days. Coldest January since 2011 (4.6C); driest since recording
began (2005); dullest since 2007 (63.6 hours).

Mean Max: 8.8ºC
Mean Min: 2.3ºC
Mean: 5.6ºC

High Max: 12.9ºC 13th
Low Max: 3.6ºC 5th
High Min: 9.8ºC 13th
Low Min: -4.7ºC 5th
Grass Min: -6.7ºC 31st

Days 10°C 11 Days
Days 5°C 30 Days
Nights 5°C 9 Days
Nights 0°C 19 Days

Rain Total: 44.6 mm
Rain Days 0.2 mm: 10 Days
Rain Days 1.0 mm: 8 Days
Max 24 hrs: 10.2 mm 18th
Days without any rain: 21

Air Frost: 12 Days
Grass Frost: 20 Days
Snow Falling: 2 Days
Snow (50%) @ 9am: 0 Days
Thunder Heard: 0 Days
Hail 5 mm: 1 Day
Hail 5 mm: 0 Day
Fog @ 9am: 1 Day

Total Monthly Sunshine: 67.0 Hours
Most Sunshine in a Day: 8.0 Hours 17th
Average Daily Sunshine: 2.2 Hours
Sunless Days: 8 Days
Cloudless Days: 2 Days
Total Possible Sunshine: 264.9 Hours
Percentage of Total Sun: 25%
Average Sunny Interval: 16.0 mins

Ave 10 Min Wind 39 mph: 0.00 Days
Calm: 8.76 Days 28%
Mean Wind: 3.0 mph
Max Gust: 41 mph 27th

Max Dewpoint: 10.3ºC 16th
Min Dewpoint: -5.6ºC 5th
Mean Dewpoint: 3.6ºC

Max Humidity: 100% several days
Min Humidity: 52% 17th
Mean Humidity: 88%

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