Ken Cook
Reports for December 2024 for the Copley sites. (Averages refer to 1991-2020)
Cloudy and very mild, wet final day.
(Differences from 1991-2020 averages in brackets)
Copley Lead Mill site 218metres asl
Temperature °C (09Z-09Z)
Mean maximum 7.8(2.0) High 12.0 on 17th, Low 3.8 on 3rd
Mean minimum 2.8 (2.8) Low -1.8 on 4th, High 8.2 on 1st
Mean screen 5.3 (2.4)
Mean 30cm earth 5.0 (0.3)
Air frost 6 (-11)
Days snow lying 50% 09Z, 0 (-8) snow on ground 2
Max depth 09Z 0cm on
River Gaunless data (Copley Lead Mill Environment Agency monitoring site 09Z daily readings)
Mean level 0.17m high 0.45m on 8th, low 0.13m on 1st ((normal 0.00m to 0.60m)
Mean river temperature 09Z 6.0, high 8.7 on 18th, low 3.3 on 22nd
Copley Met O site 253metres asl
Temperature °C (09Z-09Z)
Mean maximum 8.1 (2.4) High 12.4 on 1st, Low 4.0 on 11th
Mean minimum 3.2 (2.6) Low -1.5 on 4th, High 9.1 on 1st
Mean screen 5.7 (2.5)
Mean grass minimum 0.4 (2.7) Low -6.0 on 3rd
Mean concrete minimum 2.4 (2.7) Low -2.5 on 23rd
Mean 30cm earth 6.3 (1.2)
Mean 100cm earth 7.2 (0.6)
Air frost 2 (-11) 4.0 hours
Ground frost 17 (-6)
Concrete frost 9 (-8)
Precipitation mm (09Z-09Z)
Total 96.3 (111%) High 39.3 on 31st
Days 0.2mm 15 (-5)
Days 1.0mm 11 (-2)
Hail 0 (0)
Thunder 0 (0)
Snow cm
Days falling 4 (-7)
Days lying 50% 09Z, 1 (-6) snow on ground 1
Fresh falls 09Z 1cm (-13cm)
Max depth 09Z 1cm on 22nd
Sunshine hr (R&D electronic recorder) Sunshine hr (Campbell Stokes)
Total 54.9(78%) 46.5 (87%)
Max day 6.6 on 19th 6.0 on 19th
Average daily 1.8 (25% of the possible 7.3hr / day) 1.5 (21% possible)
Days no sun 8 (-1) 12 (1)
Fog (Vis <1km 09Z), 4 (0)
Pressure mb (mean sea level)
Average 09Z 1018.0 (5.5)
High 1040.8 on 10th
Low 978.7 on 7th
Wind KT (Davis recorder)
Mean SW 10.3 (-0.5) High gust 57 on 21st
Gale days 2 (0)
Ken Cook, Copley, Teesdale / Weardale watershed