Reports for December 2009 for the Copley sites.
(Averages refer to 1971-2000)

Cold and snowy

Copley Lead Mill 218metres asl
Temperature °C
Mean maximum 3.6 High 9.5 on 9th Low -3.0 on 18th
Mean minimum -2.1 Low -8.0 on 20th High 3.7 on 7th
Mean screen 0.7
Air frost 23
Days snow lying 50% 09Z 15
Max depth 09Z 24cm on 24th

Copley Met O site 253metres asl
Temperature °C
Mean maximum 3.6 (-2.1) High 8.9 on 9th Low -1.9 on 18th
Mean minimum -1.1 (-1.6) Low -7.7 on 22nd High 4.1 on 7th
Mean screen 1.3 (-1.8)
Mean AWS(Davis) 1.5
Mean grass minimum -4.3 (-2.4) Low -12.3 on 24th
Air frost 19 (+4)
Ground frost 26 (+3)

Rainfall mm
Total 101.4 (124%) High 10.2 on 16th
Total AWS(Davis) 73.0 (unreliable in snowy conditions)
Rain days 25 (+6) mostly snow converted
Wet days 23 (+8)
Hail 3 (+2)
Thunder 0 (0)

Snow cm
Days falling 21 (+10)
Days lying 50% 09Z 15 (+8)
Fresh falls 09Z 49cm (+34cm)
Max depth 09Z 26cm on 24th

Sunshine hr (R&D recorder)
Total 64.1 (134%) High 6.7 on 10th
Days no sun 8 (-2)
Fog 09Z 6 (+2)

Wind mph (Davis recorder)
Mean NW 6.0 (-3.3) High gust 38 on 23rd
Gale days 0 (-1)

Mean barometer (Kestrel recorder) 1004mb (-5mb)

49cm fresh snowfalls at 09am, snowiest December in the area since 1981
(63cm fresh falls)
Coldest since 1995, calmest since 2002