Ken Cook
Reports for May 2026 for the Copley sites. (Averages refer to 1991-2020)
Cool start, very warm end.
(Differences from 1991-2020 averages in brackets)
Copley Lead Mill site 219metres asl
Temperature °C (09Z-09Z)
Mean maximum 15.5 (0.6) High 28.5 on 25th, Low 8.3 on 11th
Mean minimum 5.1 (0.3) Low -1.2 on 7th, High 12.2 on 26th
Mean screen 10.3 (0.5)
Mean 30cm earth 12.2 (1.4)
Air frost 3 (0)
Days snow lying 50% 09Z, 0 (0) 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 0.11m, high 0.15m on 9th, low 0.09m on 25th ((normal 0.00m to 0.60m)
Mean river temperature 09Z 9.8, high 12.7on 26th, low 7.3 on 10th
Copley Met O site 257metres asl
Temperature °C (09Z-09Z)
Mean maximum 15.3 (1.0) High 27.6 on 25th, Low 7.8 on 11th
Mean minimum 5.9 (0.7) Low -0.5 on 7th, High 15.2 on 26th
Mean screen 10.6 (0.8)
Mean grass minimum 1.9 (-0.1) Low -7.5 on 7th
Mean concrete minimum 6.5 (1.0) Low 0.2 on 16th
Mean 30cm earth 12.0 (0.9)
Mean 100cm earth 10.5 (0.8)
Air frost 2 (1) 0.9 hours
Ground frost 12 (1)
Concrete frost 0 (-1)
Precipitation mm (09Z-09Z)
Total 65.0 (121%) High 15.3 on 2nd
Days 0.2mm 16 (1)
Days 1.0mm 14 (4)
Hail 1 (1)
Thunder 1 (0)
Snow cm
Days falling 1 (0)
Days lying 50% 09Z, 0 (0) snow on ground 0
Fresh falls 09Z 0cm (0cm)
Max depth 09Z 0cm on 0th
Sunshine hr (R&D electronic recorder) Sunshine hr (Campbell Stokes)
Total 215.5(119%) 220.1(107%)
Max day 15.2 on 25th 14.0 on 25th
Average daily 7.0 (43% of the possible 16.1hr / day) 7.4 (44% possible)
Days no sun 2 (0) 2 (0)
Fog (Vis <1km 09Z), 1 (0)
Pressure mb (mean sea level)
Average 09Z 1015.9 (0.7)
High 24hr 1030.5 on 24th
Low 24hr 998.5 on 13th
Wind KT (Davis recorder)
Mean SW 6.4 (-1.2) High gust 33 on 28th
Gale days 0 (0)
Ken Cook, Copley, Teesdale / Weardale watershed