| Blwyddyn | Mis | Dyddiad | Amser (G.M.T.) | Tymheredd (C) | Tymheredd (inc. Wind chill effect) | Buanedd Hyrddwynt (MYA) | Buanedd Cyfartalog (MYA) | Cyfeiriad y Gwynt (Gradd Celsius) | Haul (Wat y metr sgwâr) | Glawiad (mm/awr) | Lleithder Cymharol (%) | 2012 | Feb | 8 | 01:00 | 1.8 | -8.6 | 24 | 22 | 176 | 0 | 0.0 | 0.0 | 2012 | Feb | 8 | 00:45 | 1.8 | -8.6 | 24 | 22 | 167 | 0 | 0.0 | 0.0 | 2012 | Feb | 8 | 00:30 | 1.7 | -9.1 | 24 | 23 | 188 | 0 | 0.0 | 0.0 | 2012 | Feb | 8 | 00:15 | 1.7 | -8.7 | 24 | 22 | 194 | 0 | 0.0 | 0.0 | 2012 | Feb | 8 | 00:00 | 1.4 | -8.8 | 24 | 21 | 158 | 0 | 0.0 | 0.0 |