Winter weather

Calculations are based on the last 8 years of historical weather data.

Temperatures

Maximum Temperatures

Period	London	Sacramento
Dec 1	47.1°F	60.3°F
Dec 8	45.9°F	57.2°F
Dec 15	49.3°F	55.6°F
Dec 22	49.6°F	55.4°F
Jan 1	46.9°F	55.0°F
Jan 8	45.5°F	56.7°F
Jan 15	44.4°F	57.0°F
Jan 22	46.9°F	58.3°F
Feb 1	47.8°F	58.5°F
Feb 8	46.2°F	60.1°F
Feb 15	52.0°F	59.5°F
Feb 22	49.6°F	59.7°F
Average	47.6°F	57.8°F

Minimum Temperatures

Period	London	Sacramento
Dec 1	39.6°F	45.0°F
Dec 8	39.2°F	43.0°F
Dec 15	41.7°F	43.3°F
Dec 22	42.3°F	43.3°F
Jan 1	39.0°F	43.2°F
Jan 8	38.1°F	43.2°F
Jan 15	35.4°F	43.2°F
Jan 22	37.8°F	42.8°F
Feb 1	39.4°F	43.0°F
Feb 8	37.4°F	42.6°F
Feb 15	42.4°F	42.3°F
Feb 22	39.6°F	41.4°F
Average	39.3°F	43.0°F

Maximum/minimum temperature averages are computed by averaging the max/min temperature of each day for a given period.

Conditions

Sunny Weather

Period	London	Sacramento
Dec 1	1.3 hours/day	4.8 hours/day
Dec 8	1.4 hours/day	4.3 hours/day
Dec 15	1.7 hours/day	4.2 hours/day
Dec 22	1.2 hours/day	3.4 hours/day
Jan 1	1.3 hours/day	3.3 hours/day
Jan 8	2.0 hours/day	4.8 hours/day
Jan 15	3.4 hours/day	3.9 hours/day
Jan 22	2.6 hours/day	5.0 hours/day
Feb 1	2.4 hours/day	5.1 hours/day
Feb 8	2.5 hours/day	5.1 hours/day
Feb 15	1.5 hours/day	5.7 hours/day
Feb 22	3.0 hours/day	5.6 hours/day
Average	2.0 hours/day	4.6 hours/day

Sun hours are computed from the number of hours of direct sunlight. The length of the day can affect these measurements; for example, northern cities have longer days in summer.

Precipitation Levels

Period	London	Sacramento
Dec 1	0.1in	0.2in
Dec 8	0.1in	0.3in
Dec 15	0.1in	0.1in
Dec 22	0.1in	0.2in
Jan 1	0.1in	0.2in
Jan 8	0.1in	0.2in
Jan 15	0.1in	0.1in
Jan 22	0.1in	0.1in
Feb 1	0.1in	0.3in
Feb 8	0.1in	0.2in
Feb 15	0.1in	0.1in
Feb 22	0.1in	0.1in
Average	0.1in	0.2in

Average amount of precipitation that falls in a form of a rain, snow, sleet or hail.

Wind Speed

Period	London	Sacramento
Dec 1	11.8mph	8.3mph
Dec 8	13.1mph	9.3mph
Dec 15	12.4mph	8.6mph
Dec 22	13.7mph	9.4mph
Jan 1	13.9mph	9.9mph
Jan 8	11.8mph	9.9mph
Jan 15	11.9mph	8.9mph
Jan 22	12.8mph	8.2mph
Feb 1	12.8mph	10.7mph
Feb 8	13.6mph	9.6mph
Feb 15	14.8mph	10.3mph
Feb 22	13.8mph	10.3mph
Average	13.0mph	9.5mph

Humidity

Period	London	Sacramento
Dec 1	80.4%	67.3%
Dec 8	78.2%	66.6%
Dec 15	82.1%	71.4%
Dec 22	82.5%	73.9%
Jan 1	79.4%	77.9%
Jan 8	79.8%	76.8%
Jan 15	75.2%	75.2%
Jan 22	79.7%	74.6%
Feb 1	76.8%	73.8%
Feb 8	74.5%	70.4%
Feb 15	78.2%	69.9%
Feb 22	72.1%	70.2%
Average	78.2%	72.3%

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Astronomy

Sunrise Time

Sunrise times are output in the local timezone of each place.

Sunset Time

Period	London	Sacramento
Dec 1	15:53	16:44
Dec 8	15:52	16:45
Dec 15	15:52	16:47
Dec 22	15:57	16:52
Jan 1	16:05	16:58
Jan 8	16:14	17:05
Jan 15	16:25	17:13
Jan 22	16:40	17:22
Feb 1	16:55	17:32
Feb 8	17:08	17:40
Feb 15	17:21	17:47
Feb 22	17:34	17:55
Average	16:30	17:12

Sunset times are output in the local timezone of each place.

Useful Day Length

Period	London	Sacramento
Dec 1	8:05 hours	9:37 hours
Dec 8	7:56 hours	9:31 hours
Dec 15	7:50 hours	9:28 hours
Dec 22	7:52 hours	9:29 hours
Jan 1	8:00 hours	9:34 hours
Jan 8	8:12 hours	9:41 hours
Jan 15	8:28 hours	9:52 hours
Jan 22	8:53 hours	10:06 hours
Feb 1	9:20 hours	10:23 hours
Feb 8	9:46 hours	10:38 hours
Feb 15	10:12 hours	10:47 hours
Feb 22	10:34 hours	10:55 hours
Average	8:48 hours	10:00 hours

Discards daylight hours before 7 AM. In places that are located to the west of the timezone, the sun rises and sets later compared to the cities that are located to the east. This means that the useful day length is longer in the cities located to the west of the time zone.

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Weather in London and Sacramento

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Daily Forecast

Winter weather

Temperatures

Conditions

Astronomy

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Period	London	Sacramento
Dec 1	7:48	7:08
Dec 8	7:56	7:14
Dec 15	8:02	7:19
Dec 22	8:05	7:23
Jan 1	8:05	7:24
Jan 8	8:02	7:23
Jan 15	7:57	7:21
Jan 22	7:47	7:16
Feb 1	7:35	7:09
Feb 8	7:22	7:01
Feb 15	7:09	6:53
Feb 22	6:54	6:43
Average	7:42	7:12