Reports for May 2017 for the Copley sites. (Averages refer to 1981-2010)

Warmest May since at least 1970, sunniest since 2009 and dry.

Copley Lead Mill site 218metres asl
Temperature °C (09Z-09Z)
Mean maximum 16.4 (+1.6) High 25.2 on 25th, Low 9.8 on 7th
Mean minimum 5.9 (+1.5) Low -0.3 on 11th, High 11.5 on 24th, 28th
Mean screen 11.1 (+1.6)
Mean 30cm earth 11.6
Air frost 1
Days snow lying 50% 09Z, 0
Max depth 09Z 0cm on 00

Copley Met O site 253metres asl
Temperature °C (09Z-09Z)
Mean maximum 15.7 (+1.5) High 24.6 on 25th, Low 9.4 on 7th
Mean minimum 6.4 (+1.3) Low 1.9 on 11th, High 12.0 on 28th
Mean screen 11.1 (+1.4)
Mean grass minimum 2.6 Low -2.9 on 10th
Mean 30cm earth 11.8
Mean 100cm earth 10.3
Air frost 0
Ground frost 6

Precipitation mm (09Z-09Z)
Total 32.2 (62%) High 8.9 on 27th
Days 0.2mm 10
Days 1.0mm 8
Hail 0
Thunder 1(27th)

Snow cm
Days falling 0
Days lying 50% 09Z, 0
Fresh falls 09Z 0cm
Max depth 09Z 0cm on 00

Sunshine hr (R&D electronic recorder) Sunshine hr (Campbell Stokes)
Total 196.7 (107%) 215.0
Max day 15.6 on 25th 14.5 on 25th
Average daily 6.3 (39% of the possible 16.1hr / day) 6.9 (43% possible)
Days no sun 2 2

Fog (Vis 1km 09Z), 0

Wind mph (Davis recorder)
Mean WSW 8.3 (-1.5) High gust 37 on 27th
Gale days 0

Ken
Copley
Teesdale