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 May 25, Monday	15	10.3 51	720.2 28.35 960.19 960.19	754.3 29.7 1005.65 1005.65		61	Wind blowing from the north-northwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas						Stratocumulus cumulogenitus.	40%. 4/10. 3 oktas	600-1000 1968-3281	Altocumulus cumulogenitus (or cumulonimbogenitus).		71.0 44.1	3.1 38
	12	9.7 49	720.0 28.35 959.92 959.92	754.2 29.69 1005.52 1005.52	-0.3 -0.01 -0.4 -0.4	51	Wind blowing from the north-northwest	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas						Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus.	40%. 4/10. 3 oktas	1500-2000 4921-6562	Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels.	No Cirrus, Cirrocumulus or Cirrostratus.	71.0 44.1	0.0 32
	09	9.1 48	720.3 28.36 960.32 960.32	754.6 29.71 1006.05 1006.05		61	Wind blowing from the south-southwest	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			60%. 6/10. 5 oktas					11.0 52	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	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.	71.0 44.1	2.0 36	No precipitation No precipitation	1
May 24, Sunday	21	8.2 47	721.3 28.4 961.65 961.65	755.7 29.75 1007.52 1007.52		61	Wind blowing from the south-southwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			50%. 5/10. 4 oktas						Stratocumulus cumulogenitus.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	1500-2000 4921-6562	Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels.	No Cirrus, Cirrocumulus or Cirrostratus.	71.0 44.1	1.1 34
	18	10.8 51	720.5 28.37 960.59 960.59	754.6 29.71 1006.05 1006.05	0.3 0.01 0.4 0.4	53	Wind blowing from the south-west	Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft)			60%. 6/10. 5 oktas				5.9 43	11.8 53	Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus.	20–30%. 2/10–3/10. 2 oktas	1000-1500 3281-4921	Altocumulus cumulogenitus (or cumulonimbogenitus).	No Cirrus, Cirrocumulus or Cirrostratus.	71.0 44.1	1.6 35	Trace of precipitation Trace of precipitation	9
	15	10.0 50	720.2 28.35 960.19 960.19	754.3 29.7 1005.65 1005.65		55	Wind blowing from the west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas						Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	40%. 4/10. 3 oktas	1000-1500 3281-4921	Altocumulus cumulogenitus (or cumulonimbogenitus).	No Cirrus, Cirrocumulus or Cirrostratus.	71.0 44.1	1.4 35