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San Francisco US

Winter weather

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

Temperatures

Maximum Temperatures

Minimum Temperatures

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

Conditions

Sunny Weather

Period	San Francisco
Dec 1	4.0 hours/day
Dec 8	4.2 hours/day
Dec 15	4.2 hours/day
Dec 22	3.4 hours/day
Jan 1	3.8 hours/day
Jan 8	4.9 hours/day
Jan 15	3.7 hours/day
Jan 22	5.3 hours/day
Feb 1	5.3 hours/day
Feb 8	5.8 hours/day
Feb 15	5.9 hours/day
Feb 22	6.2 hours/day
Average	4.7 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

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

Wind Speed

Humidity

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Astronomy

Sunrise Time

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

Sunset Time

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

Useful Day Length

Period	San Francisco
Dec 1	9:41 hours
Dec 8	9:35 hours
Dec 15	9:33 hours
Dec 22	9:34 hours
Jan 1	9:38 hours
Jan 8	9:46 hours
Jan 15	9:55 hours
Jan 22	10:10 hours
Feb 1	10:26 hours
Feb 8	10:41 hours
Feb 15	10:52 hours
Feb 22	10:59 hours
Average	10:06 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 San Francisco

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Daily Forecast

Winter weather

Temperatures

Conditions

Astronomy

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	San Francisco US
Today Thu May 22
Fri May 23
Sat May 24
Sun May 25
Mon May 26
Tue May 27
Wed May 28

Period	San Francisco
Dec 1	14.7°C
Dec 8	14.2°C
Dec 15	13.6°C
Dec 22	13.5°C
Jan 1	13.5°C
Jan 8	14.1°C
Jan 15	13.8°C
Jan 22	14.5°C
Feb 1	14.7°C
Feb 8	14.7°C
Feb 15	14.0°C
Feb 22	13.9°C
Average	14.1°C

Period	San Francisco
Dec 1	9.4°C
Dec 8	8.9°C
Dec 15	8.2°C
Dec 22	8.6°C
Jan 1	8.5°C
Jan 8	8.8°C
Jan 15	8.8°C
Jan 22	8.4°C
Feb 1	8.4°C
Feb 8	8.4°C
Feb 15	7.9°C
Feb 22	7.7°C
Average	8.5°C

Period	San Francisco
Dec 1	3.3mm
Dec 8	4.8mm
Dec 15	2.6mm
Dec 22	4.7mm
Jan 1	3.1mm
Jan 8	3.9mm
Jan 15	2.7mm
Jan 22	2.5mm
Feb 1	5.7mm
Feb 8	4.3mm
Feb 15	2.8mm
Feb 22	1.3mm
Average	3.5mm

Period	San Francisco
Dec 1	13.8km/h
Dec 8	15.6km/h
Dec 15	14.2km/h
Dec 22	15.9km/h
Jan 1	16.6km/h
Jan 8	16.8km/h
Jan 15	14.8km/h
Jan 22	14.6km/h
Feb 1	18.8km/h
Feb 8	17.3km/h
Feb 15	17.7km/h
Feb 22	18.5km/h
Average	16.2km/h

Period	San Francisco
Dec 1	72.7%
Dec 8	69.6%
Dec 15	71.7%
Dec 22	74.9%
Jan 1	75.9%
Jan 8	74.9%
Jan 15	73.6%
Jan 22	71.8%
Feb 1	69.2%
Feb 8	70.4%
Feb 15	70.8%
Feb 22	69.6%
Average	72.1%

Period	San Francisco
Dec 1	7:10
Dec 8	7:16
Dec 15	7:20
Dec 22	7:24
Jan 1	7:26
Jan 8	7:25
Jan 15	7:23
Jan 22	7:18
Feb 1	7:11
Feb 8	7:04
Feb 15	6:55
Feb 22	6:46
Average	7:12

Period	San Francisco
Dec 1	16:50
Dec 8	16:51
Dec 15	16:53
Dec 22	16:58
Jan 1	17:04
Jan 8	17:11
Jan 15	17:18
Jan 22	17:28
Feb 1	17:37
Feb 8	17:45
Feb 15	17:52
Feb 22	17:59
Average	17:18