Reports for April 2021 for the Copley sites. (Averages refer to 1991-2020 for full month)

Dry, sunny, cold and frosty, light winds

Copley Lead Mill site 218metres asl
Temperature °C (09Z-09Z)
Mean maximum 10.1 (-1.7) High 16.1 on 23rd, Low 5.4 on 6th
Mean minimum -1.6 (-3.9) Low -5.3 on 15th, High 3.5 on 1st
Mean screen 4.3 (-2.8)
Mean 30cm earth 6.3 (-1.0)
Air frost 24 (+15)
Days snow lying 50% 09Z, 1 (0)
Max depth 09Z 1cm on 5th

Copley Met O site 253metres
Temperature °C (09Z-09Z)
Mean maximum 9.9 (-1.4) High 16.1 on 23rd, Low 4.0 on 6th
Mean minimum -1.0 (-3.8) Low -5.8 on 15th, High 4.5 on 21st
Mean screen 4.5 (-2.5)
Mean grass minimum -6.7 (-6.1) Low -13.0 on 15th
Mean 30cm earth 7.9 (0.0)
Mean 100cm earth 7.4 (+0.2)
Air frost 20 (+14) 140.5 hours
Ground frost 28 (+11)

Precipitation mm (09Z-09Z)
Total 16.1 (28%) High 8.9 on 27th
Days 0.2mm 10 (-4)
Days 1.0mm 4 (-5)
Hail 8
Thunder 0

Snow cm
Days falling 7 (+2)
Days lying 50% 09Z, 0 (-1) 50% on 3 mornings
Fresh falls 09Z 0cm (-4cm)
Max depth 09Z 0cm on 0th

Sunshine hr (R&D electronic recorder) sunset 21st Sunshine hr (Campbell Stokes) sunset 21st
Total 215.6 (140%) 224.1
Max day 12.9 on 15th&22nd 12.3 on 23rd
Average daily 7.2 (51% of the possible 14.1hr / day) 7.4 (52% possible)
Days no sun 0 0

Fog (Vis 1km 09Z), 0

Wind KT (Davis recorder)
Mean NW 5.2 (-2.7) High gust 37 on 4th
Gale days 0
Ken
Copley
Teesdale