Summary for May 2013

A rather pleasant, benign month with only one dull and one cold day.

Average maximum temperatures but a predominance of cold nights
throughout the month meant the mean minimum temperature was well below
average. Slightly drier and sunnier than normal though not as dry, warm
or sunny as May 2012.

Mean Max: 16.6ºC (-0.0ºC)
Mean Min: 6.0ºC (-2.2ºC)
Mean: 11.3ºC (-1.1ºC)

High Max: 23.7ºC 31st
Low Max: 9.9ºC 14th
High Min: 11.1ºC 5th
Low Min: 0.9ºC 1st
Grass Min: -0.5ºC 1st

Rain Total (gauge): 51.3 mm (92%)
Rain Total (tipping bucket): 50.4 mm (90%)
Rain Days 0.2 mm: 12 Days
Rain Days 1.0 mm: 9 Days
Max 24 hrs: 12.0 mm 14th
Days without any rain: 19

Air Frost: 0 Days
Grass Frost: 1 Day (1st)
Snow Falling: 0 Days
Snow (50%) @ 9am: 0 Days
Thunder Heard: 1 Day (17th)
Hail 5 mm: 1 Day (17th)
Hail 5 mm: 0 Days
Fog @ 9am: 0 Days

Total Monthly Sunshine: 212.5 Hours (111%)
Most Sunshine in a Day: 14.8 Hours 26th
Average Daily Sunshine: 6.9 Hours
Sunless Days: 1 Day (28th)
Cloudless Days: 4 Days
Total Possible Sunshine: 481.5 Hours
Percentage of Total Sun: 44%

Mean Soil Temp @ 30 cm: 13.4ºC
Mean Soil Temp @ 100 cm: 12.7ºC

Ave 10 Min Wind 39 mph: 0.00 Days
Mean Wind: 3.8 mph
Max Gust: 37 mph 9th

Mean Pressu 1012.5 hPa
Max Pressu 1025.4 hPa 1st
Min Pressu 982.4 hPa 15th

Max Dewpoint: 13.8ºC 30th
Min Dewpoint: -0.1ºC 1st
Mean Dewpoint: 7.2ºC

Max Humidity: 100% 18th
Min Humidity: 37% 2nd
Mean Humidity: 77%

--
Nick G
Otter Valley, Devon
20 m amsl
http://www.ottervalley.co.uk