Ken Cook
Reports for April 2025 for the Copley sites. (Averages refer to 1991-2020)
Dry and sunny. Warm by day again, light winds. Max yesterday was highest for April on my 55 year record by 0.4C.
(Differences from 1991-2020 averages in brackets)
Copley Lead Mill site 218metres asl
Temperature °C (09Z-09Z)
Mean maximum 13.7 (1.9) High 23.2 on 30th, Low 7.8 on 16th
Mean minimum 1.4 (-0.9) Low -3.4 on 7th, High 8.2 on 28th
Mean screen 7.5 (0.4)
Mean 30cm earth 8.0 (0.9)
Air frost 10 (1)
Days snow lying 50% 09Z, 0 (-1) snow on ground 0
Max depth 09Z 0cm on 0th
River Gaunless data (Copley Lead Mill Environment Agency monitoring site 09Z daily readings)
Mean level 0.09m high 0.10m on 1st low 0.08m on 30th ((normal 0.00m to 0.60m)
Mean river temperature 09Z 7.9, high 9.9 on 30th, low 5.7 on 7th
Copley Met O site 253metres asl
Temperature °C (09Z-09Z)
Mean maximum 13.7 (2.5) High 23.1 on 30th, Low 7.7 on 16th
Mean minimum 3.0 (0.2) Low -3.2 on 7th, High 8.9 on 28th
Mean screen 8.3 (1.3)
Mean grass minimum -2.9 (-2.0) Low -11.2 on 7th
Mean concrete minimum 3.0 (0.5) Low -2.9 on 7th
Mean 30cm earth 9.5 (1.6)
Mean 100cm earth 8.5 (1.3)
Air frost 7 (1) 28.0 hours
Ground frost 22 (5)
Concrete frost 5 (-2)
Precipitation mm (09Z-09Z)
Total 7.9 (14%) High 3.3 on 15th
Days 0.2mm 5 (-9)
Days 1.0mm 2 (-7)
Hail 0 (-3)
Thunder 0 (-1)
Snow cm
Days falling 0 (-5)
Days lying 50% 09Z, 0 (-1) snow on ground 0
Fresh falls 09Z 0cm (-3cm)
Max depth 09Z 0cm on 0th
Sunshine hr (R&D electronic recorder) Sunshine hr (Campbell Stokes)
Total 198.5(129%) 204.2 (110%)
Max day 12.7 on 10th 12.0 on 10th &30th
Average daily 6.5 (47% of the possible 14.1hr / day) 6.8 (48% possible)
Days no sun 1 (-2) 1 (-1)
Fog (Vis <1km 09Z), 3 (1)
Pressure mb (mean sea level)
Average 09Z 1018.9 (5.1)
High 1034.1 on 9th
Low 996.3 on 16th
Wind KT (Davis recorder)
Mean ENE 4.7 (-3.1) High gust 35 on 14th
Gale days 0 (0)
Ken Cook, Copley, Teesdale / Weardale watershed