Weather archive in Grimsstadir
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| Date / Local time | T | Po | P | Pa | U | DD | Ff | ff10 | ff3 | N | WW | W1 | W2 | Tn | Tx | Cl | Nh | H | Cm | Ch | VV | Td | RRR | tR | E | Tg | E' | sss | |
| 2025 October 21, Tuesday | 15 | -2.1 28 | 721.2 28.39 961.52 961.52 | 757.0 29.8 1009.25 1009.25 | -0.5 -0.02 -0.67 -0.67 | 90 | Wind blowing from the north | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Shower(s) of snow, or of rain and snow. | Snow and/or other types of solid precipitation | Blizzard | Stratocumulus cumulogenitus. | 60%. 6/10. 5 oktas | 300-600 984-1968 | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | No Cirrus, Cirrocumulus or Cirrostratus. | 30.0 18.6 | -3.5 26 | ||||||||||
12 | -1.1 30 | 721.7 28.41 962.19 962.19 | 757.3 29.81 1009.65 1009.65 | 0.5 0.02 0.67 0.67 | 88 | Wind blowing from the north | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 60%. 6/10. 5 oktas | Snow shower(s), slight. | Snow and/or other types of solid precipitation | Blizzard | Stratocumulus cumulogenitus. | 60%. 6/10. 5 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 10.0 6.2 | -2.8 27 | |||||||||||
09 | -2.8 27 | 721.2 28.39 961.52 961.52 | 757.1 29.81 1009.38 1009.38 | 90 | Wind blowing from the north | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -6.2 21 | -0.7 31 | Stratocumulus cumulogenitus. | 60%. 6/10. 5 oktas | 300-600 984-1968 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 40.0 24.9 | -4.2 24 | 0.1 | 15 | |||||||||||
| October 20, Monday | 18 | -0.9 30 | 722.0 28.43 962.59 962.59 | 757.6 29.83 1010.05 1010.05 | -0.3 -0.01 -0.4 -0.4 | 86 | Wind blowing from the north-east | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 100%. 10/10. 8 oktas | Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station. | Shower(s). | Cloud covering more than 1/2 of the sky throughout the appropriate period. | -1.6 29 | 0.0 32 | Stratocumulus cumulogenitus. | 100%. 10/10. 8 oktas | 300-600 984-1968 | 25.0 15.5 | -3.0 27 | Trace of precipitation Trace of precipitation | 9 | ||||||||
15 | -0.5 31 | 722.3 28.44 962.99 962.99 | 757.9 29.84 1010.45 1010.45 | 86 | Wind blowing from the east-northeast | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 100%. 10/10. 8 oktas | Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station. | Snow and/or other types of solid precipitation | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels. | 100%. 10/10. 8 oktas | 300-600 984-1968 | 20.0 12.4 | -2.6 27 | ||||||||||||||