Summary for October 2018

Drier and sunnier than normal with an average mean temperature that
belies a month dominated by contrasts. Mild to warm by day until the
25th then much cooler. First October air frosts since 2010 and an
exceptionally cold night on the 30th. Colder than the annual minimum
temperature in some years. A remarkably sunny period from the 18th to
the 30th with a total of 103 hours and 7 completely cloudless days. That
is an amazing 78% of the total possible and extremely unusual for what
is normally one of the duller months.

Mean Max: 16.7ºC
Mean Min: 6.9ºC
Mean: 11.8ºC (-0.1°C)

High Max: 22.8ºC 3rd
Low Max: 10.2ºC 27th
High Min: 17.3ºC 13th
Low Min: -4.3ºC 30th
Grass Min: -6.1ºC 30th

Days 20°C 5 Days
Days 15°C 22 Days
Nights 10°C 10 Days
Nights 5°C 18 Days

Rain Total (gauge): 50.7 mm (57%)
Rain Days 0.2 mm: 8 Days
Rain Days 1.0 mm: 6 Days
Max 24 hrs: 17.2 mm 14th
Days without any rain: 23

Air Frost: 3 Days
Grass Frost: 6 Days
Thunder Heard: 0 Days
Hail 5 mm: 1 Day
Hail 5 mm: 0 Days
Fog @ 9am: 1 Day

Total Monthly Sunshine: 160.2 Hours (126%)
Most Sunshine in a Day: 10.5 Hours 9th
Average Daily Sunshine: 5.2 Hours
Sunless Days: 3 Days
Cloudless Days: 8 Days
Total Possible Sunshine: 331.8 Hours
Percentage of Total Sun: 48%
Average Sunny Interval: 19.7 mins

Ave 10 Min Wind 39 mph: 0.00 Days
Calm: 6.03 Days 19%
Mean Wind: 3.2 mph
Max Gust: 52 mph 12th

Mean Pressu 1018.2 hPa
Max Pressu 1039.0 hPa 22nd
Min Pressu 998.1 hPa 11th

Max Dewpoint: 17.2ºC 13th
Min Dewpoint: -5.2ºC 30th
Mean Dewpoint: 8.8ºC

Max Humidity: 100% Several days
Min Humidity: 48% 1st
Mean Humidity: 84%

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