Weather archive in Grimsstadir
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Weather statistics
| 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 September 16, Tuesday | 21 | -0.1 32 | 731.4 28.8 975.12 975.12 | 767.4 30.21 1023.12 1023.12 | 0.8 0.03 1.07 1.07 | 98 | Wind blowing from the north | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 50%. 5/10. 4 oktas | Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels. | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 60.0 37.3 | -0.4 31 | |||||||||||||
18 | 3.3 38 | 730.6 28.76 974.05 974.05 | 766.1 30.16 1021.38 1021.38 | 0.2 0.01 0.27 0.27 | 85 | 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 | 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. | Drizzle. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 3.3 38 | 7.0 45 | Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels. | 50%. 5/10. 4 oktas | 300-600 984-1968 | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil does not reach 45 degrees above the horizon. | 40.0 24.9 | 1.0 34 | Trace of precipitation Trace of precipitation | 9 | |||||||
15 | 7.0 45 | 730.4 28.76 973.79 973.79 | 765.4 30.13 1020.45 1020.45 | 0.4 0.02 0.53 0.53 | 77 | Wind blowing from the north | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 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. | Drizzle. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Stratocumulus other than Stratocumulus cumulogenitus. | 50%. 5/10. 4 oktas | 300-600 984-1968 | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 40.0 24.9 | 3.2 38 | |||||||||||
12 | 4.6 40 | 730.0 28.74 973.25 973.25 | 765.3 30.13 1020.32 1020.32 | 0.8 0.03 1.07 1.07 | 88 | Wind blowing from the north | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 100%. 10/10. 8 oktas | Drizzle, not freezing, continuous, slight at time of observation. | Drizzle. | Fog or ice fog or thick haze. | Stratus nebulosus or Stratus fractus other than of bad weather, or both. | 50%. 5/10. 4 oktas | 200-300 656-984 | Altostratus opacus or Nimbostratus. | 12.0 7.5 | 2.8 37 | ||||||||||||
09 | 4.2 40 | 729.2 28.71 972.19 972.19 | 764.5 30.1 1019.25 1019.25 | 87 | Wind blowing from the north | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 60%. 6/10. 5 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. | Rain. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 2.3 36 | 9.1 48 | Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels. | 50%. 5/10. 4 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 30.0 18.6 | 2.2 36 | 0.2 0.01 | 15 | ||||||||