Reports for May 2013 for the Copley sites. (Averages refer to 1981-2010)
Cool, cloudy, wet and windy.

Copley Lead Mill site 218metres asl
Temperature °C (09Z-09Z)
Mean maximum 13.9 (-0.7) High 21.6 on 31st Low 9.6 on 23rd
Mean minimum 4.2 (-0.2) Low -1.8 on 16th High 10.3 on 20th
Mean screen 9.1 (-0.4)
Mean 30cm earth 9.2
Air frost 4
Days snow lying 50% 09Z, 0
Max depth 09Z 0cm on -

Copley Met O site 253metres asl
Temperature °C (09Z-09Z)
Mean maximum 13.3 (-0.9) High 20.5 on 31st Low 9.0 on 23rd
Mean minimum 4.6 (-0.5) Low -0.3 on 16th High 10.0 on 20th
Mean screen 8.9 (-0.8)
Mean AWS(Davis 00Z-00Z) 8.8
Mean grass minimum -0.8 Low -7.3 on 16th
Mean 30cm earth 9.2
Mean 100cm earth 8.0
Air frost 1
Ground frost 19

Precipitation mm (09Z-09Z)
Total 87.7 (169%) High 26.3 on 17th
Total AWS(Davis 00Z-00Z) 96.6(unreliable in snow and strong winds)
Days 0.2mm 18
Days 1.0mm 10
Hail 2
Thunder 0

Snow cm
Days falling 4
Days lying 50% 09Z, 0
Fresh falls 09Z 0cm
Max depth 09Z 0cm on -

Sunshine hr (R&D recorder)
Total 170.2 (93%) High 15.0 on 25th
Average daily sun 5.5hr (34% of the possible 16.1hr/day)
Days no sun 3
Fog (Vis 1km 09Z), 1

Wind mph (Davis recorder)
Mean SW 11.6 (3.0) High gust 46 on 13th
Gale days 0

Best wishes,
Ken
Copley, Teesdale