Weather archive in Jack London Lake

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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 July 21, Tuesday	14	24.2 76	686.0 27.01 914.59 914.59			34	Wind blowing from the west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas											50.0 31.1
	11	19.8 68	686.0 27.01 914.59 914.59			60	Wind blowing from the north	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)
	08	17.5 64	686.0 27.01 914.59 914.59			71	Wind blowing from the north	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 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	Visibility reduced by smoke, e.g. veldt or forest fires, industrial smoke or volcanic ashes.			15.6 60							20.0 12.4		0.4 0.02	12
	05	16.3 61	685.5 26.99 913.93 913.93	753.1 29.65 1004.05 1004.05		82	Wind blowing from the north-northwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)															13.2 56
	02	16.5 62	684.9 26.96 913.13 913.13	752.4 29.62 1003.12 1003.12		78	Wind blowing from the north-northeast	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	State of sky on the whole unchanged.	Shower(s).	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus.	70 – 80%. 7/10 – 8/10. 6 oktas	1000-1500 3281-4921	No Altocumulus, Altostratus or Nimbostratus.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	50.0 31.1	12.7 55
July 20, Monday	23	15.9 61	684.4 26.94 912.46 912.46	751.9 29.6 1002.45 1002.45		95	Wind blowing from the west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)															15.1 59
	20	17.6 64	684.1 26.93 912.06 912.06	751.2 29.57 1001.52 1001.52		77	Wind blowing from the north-west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas	Thunderstorm, slight or moderate, without hail, but with rain and/or snow at time of observation.	Thunderstorm(s) with or without precipitation.	Shower(s).		22.7 73	Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus.	70 – 80%. 7/10 – 8/10. 6 oktas	1000-1500 3281-4921	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	20.0 12.4	13.5 56	Trace of precipitation Trace of precipitation	12
	17	22.0 72	683.2 26.9 910.86 910.86	749.3 29.5 998.98 998.98		55	Wind blowing from the south-east	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)															12.6 55
	14	21.8 71	684.0 26.93 911.93 911.93	750.1 29.53 1000.05 1000.05		56	Wind blowing from the south-east	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			40%. 4/10. 3 oktas						Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus.	40%. 4/10. 3 oktas	1000-1500 3281-4921	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	50.0 31.1	12.7 55