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 | |
| 2026 September 21, Monday | 21 | 7.1 45 | 712.7 28.06 950.19 950.19 | 746.8 29.4 995.65 995.65 | 78 | Wind blowing from the south-east | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 6.9 44 | 7.2 45 | 3.5 38 | Trace of precipitation Trace of precipitation | 3 | |||||||||||||||||
18 | 11.3 52 | 713.0 28.07 950.59 950.59 | 746.7 29.4 995.52 995.52 | 0.5 0.02 0.67 0.67 | 60 | Wind blowing from the south | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 5.6 42 | 15.4 60 | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 2000-2500 6562-8202 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus. | 71.0 44.1 | 3.8 39 | ||||||||||||
15 | 14.5 58 | 712.5 28.05 949.92 949.92 | 745.7 29.36 994.19 994.19 | 71 | Wind blowing from the south-southeast | Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft) | 13.4 56 | 14.5 58 | 9.3 49 | Trace of precipitation Trace of precipitation | 3 | ||||||||||||||||||
12 | 7.8 46 | 714.2 28.12 952.19 952.19 | 748.3 29.46 997.65 997.65 | -4.0 -0.16 -5.33 -5.33 | 87 | Wind blowing from the south-east | Strong breeze (12 m/s) (43 km/h) (27 miles/hour) (23 knots) (6 Bft) | 7.7 46 | 7.8 46 | 5.8 42 | 1.0 0.04 | 3 | |||||||||||||||||
09 | 5.9 43 | 718.2 28.28 957.52 957.52 | 752.8 29.64 1003.65 1003.65 | 92 | Wind blowing from the south-east | Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft) | 5.9 43 | 6.2 43 | 4.7 40 | 0.8 0.03 | 3 | ||||||||||||||||||
| September 20, Sunday | 21 | 3.4 38 | 726.2 28.59 968.19 968.19 | 761.5 29.98 1015.25 1015.25 | 97 | Wind blowing from the west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 3.3 38 | 3.4 38 | 3.0 37 | Trace of precipitation Trace of precipitation | 3 | |||||||||||||||||