Ken Cook
Reports for September 2025 for the Copley sites. (Averages refer to 1991-2020)
Cool and wet, normal sunshine.
(Differences from 1991-2020 averages in
brackets)
Copley Lead Mill site 218metres asl
Temperature °C (09Z-09Z)
Mean maximum 15.0 (-1.0) High 19.1 on 7th, Low 10.9 on 20th
Mean minimum 5.7 (-1.7) Low -0.6 on 22nd, High 11.7 on 3rd
Mean screen 10.3 (-1.4)
Mean 30cm earth 12.4 (-1.0)
Air frost 1 (1)
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 0.09m, high 0.25m on 21st, low 0.07m on 1st ((normal 0.00m to 0.60m)
Mean river temperature 09Z 9.9, high 12.5 on 19th, low 8.0 on 22nd
Copley Met O site 253metres asl
Temperature °C (09Z-09Z)
Mean maximum 15.8 (-0.2) High 19.2 on 7th, Low 10.8 on 20th
Mean minimum 7.0 (-1.2) Low 0.6 on 22nd, High 12.2 on 19th
Mean screen 11.4 (-0.7)
Mean grass minimum 2.8 (-2.0) Low -5.0 on 22nd
Mean concrete minimum 6.9 (-1.1) Low 0.5 on 22nd
Mean 30cm earth 14.1 (0.0)
Mean 100cm earth 14.3 (0.5)
Air frost 0 (0) 0 hours
Ground frost 9 (4)
Concrete frost 0 (0)
Precipitation mm (09Z-09Z)
Total 112.5 (168%) High 37.7 on 20th
Days 0.2mm 20 (5)
Days 1.0mm 18 (9)
Hail 0 (0)
Thunder 1 (0)
Snow cm
Days falling 0 (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 125.2(94%) 129.8(89%)
Max day 11.1 on 22nd 10.2 on 22nd
Average daily 4.2 (33% of the possible 12.8hr / day) 4.3 (33% possible)
Days no sun 0 (-2) 0 (-3)
Fog (Vis <1km 09Z), 1 (0)
Pressure mb (mean sea level)
Average 09Z 1012.1 (-2.5)
High 24hr 1031.7 on 23rd
Low 24hr 998.1 on 15th
Wind KT (Davis recorder)
Mean SW 6.3 (-2.3) High gust 33 on 19th
Gale days 0 (0)
Ken Cook, Copley, Teesdale / Weardale watershed