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World Weather Information Service
United States of America
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National Weather Service
Weather Information for San Francisco, California
  MAPMAP
Weather Forecast
Issued at 01:56  (Local time)  18 Sep  2018 
Date Temperature oF Weather
Minimum Maximum
18 Sep
( Tue ) 		- 64 Decreasing Clouds
Decreasing Clouds
19 Sep
( Wed ) 		54 67 Becoming Sunny
Becoming Sunny
20 Sep
( Thu ) 		55 70 Sunny
Sunny
21 Sep
( Fri ) 		55 67 Patchy Fog then Sunny
Patchy Fog then Sunny
22 Sep
( Sat ) 		55 66 Patchy Fog then Sunny
Patchy Fog then Sunny
23 Sep
( Sun ) 		55 65 Patchy Fog then Sunny
Patchy Fog then Sunny
24 Sep
( Mon ) 		54 65 Mostly Sunny
Mostly Sunny
>> Click here for temperatures in oC
 
Climatological Information
Month Mean Temperature oF Mean Total Rainfall (mm) Mean Number of Rain Days
Daily
Minimum		 Daily
Maximum
Jan 45.7 56.9 114.3 11.7
Feb 47.5 60.2 113.3 11.1
Mar 48.5 61.8 82.8 11.0
Apr 49.2 63.1 37.1 6.5
May 51.0 64.3 17.8 3.8
Jun 52.8 66.4 4.1 1.5
Jul 54.1 66.5 0.0 0.3
Aug 55.1 68.1 1.5 1.0
Sep 55.1 70.2 5.3 1.7
Oct 53.7 69.2 28.4 3.9
Nov 50.1 63.1 80.3 8.9
Dec 46.1 57.1 115.8 11.6
>> Click here for temperatures in oC

Remarks:
* Climatological information is based on monthly averages for the 30-year period 1981-2010.
* Attention: Please note that the averaging period for climatological information and the definition of "Mean Number of Precipitation/Rain Days" quoted in this web site may be different for different countries. Hence, care should be taken when city climatologies are compared.