Ken Cook
Reports for April 2023 for the Copley sites. (Averages refer to 1991-2020)
Dull, wet and cool
Copley Lead Mill site 218metres asl
Temperature °C (09Z-09Z)
Mean maximum 10.8 (-1.0) High 14.2 on 16th, Low 7.0 on 12th
Mean minimum 1.9 (-0.4) Low -4.2 on 3rd, High 6.2 on 6th
Mean screen 6.3 (-0.8)
Mean 30cm earth 7.7 (+0.6)
Air frost 6 (-3)
Days snow lying 50% 09Z, 0 (-1) snow on ground 0
Max depth 09Z 0cm on 00th
River Gaunless data (Copley Lead Mill Environment Agency monitoring site 09Z daily readings)
Mean level 0.15m high 0.34m on 22nd, low 0.11m on 21st (normal 0.00m to 0.60m)
Mean river temperature 6.9, high 9.1 on 17th, low 4.4 on 3rd
Copley Met O site 253metres asl
Temperature °C (09Z-09Z)
Mean maximum 10.3 (-0.9) High 13.2 on 16th, Low 6.3 on 12th
Mean minimum 2.5 (-0.3) Low -3.3 on 3rd, High 7.8 on 17th
Mean screen 6.4 (-0.6)
Mean grass minimum -0.0 (+0.9) Low -9.1 on 3rd
Mean concrete minimum 2.8 (+0.3) Low -3.1 on 3rd
Mean 30cm earth 8.5 (+0.6)
Mean 100cm earth 7.9 (+0.7)
Air frost 6 (0) 32 hours
Ground frost 14 (-3)
Concrete frost 5 (-2)
Precipitation mm (09Z-09Z)
Total 64.4 (113%) High 19.7 on 21st
Days 0.2mm 18 (+4)
Days 1.0mm 10 (+1)
Hail 1 (-2)
Thunder 0 (0)
Snow cm
Days falling 4 (-1)
Days lying 50% 09Z, 5 (0) snow on ground 0
Fresh falls 09Z 0cm (-3cm)
Max depth 09Z 00cm on 0th
Sunshine hr (R&D electronic recorder) Sunshine hr (Campbell Stokes)
Total 136.8 (89%) 148.1 (80%)
Max day 12.0 on 3rd 11.9 on 7th
Average daily 4.6 (33% of the possible 14.1hr / day) 4.9 (35% possible)
Days no sun 3 (0) 3 (+1)
Fog (Vis <1km 09Z), 3 (+1)
Wind KT (Davis recorder)
Mean ENE 6.5 (-1.3) High gust 46 on 11th
Gale days 0 (0)
Ken Cook, Copley, Teesdale / Weardale watershed