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San Francisco, Calif.
H I S T O R I C A L   W E A T H E R   D A T A

Average Temperature
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
F5751.154.454.95656.658.459.160.162.36257.251.7
C13101212131314151516161410
Years Charted: 30 Source: National Weather Service, San Francisco
Results based on data collected from 1961 - 1990


Average High Temperature
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
F62.756.36060.862.162.764.164.665.668.768.762.756.4
C17131516161717181820201713
Years Charted: 30 Source: National Weather Service, San Francisco
Results based on data collected from 1961 - 1990


Average Low Temperature
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
F51.245.848.74949.850.552.653.554.655.955.251.647
C107999101111121312108
Years Charted: 30 Source: National Weather Service, San Francisco
Results based on data collected from 1961 - 1990


Highest Recorded Temperature
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
F1037981839496101103981011028676
C39262728343538393638383024
Years Charted: 57 Source: National Weather Service, San Francisco
Results based on data collected through 1993


Lowest Recorded Temperature
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
F28303138404447474848454128
C-2-10346888875-2
Years Charted: 57 Source: National Weather Service, San Francisco
Results based on data collected through 1993


Mean Number of Days Below 32F/0C
 TotalJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
Days*------000000000---
Years Charted: 57 Source: National Weather Service, San Francisco
Results based on data collected through 1993


Average Precipitation
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
in.19.714.062.953.071.290.250.150.040.070.261.263.213.1
mm50010374773263116328178
Years Charted: 30 Source: National Weather Service, San Francisco
Results based on data collected from 1961 - 1990


Average Snowfall
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
in.0000000000000
mm0000000000000
Years Charted: 36 Source: National Weather Service, San Francisco
Results based on data collected through 1993


Average Wind Speed
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
mph8.76.77.58.59.510.410.911.210.59.17.66.36.5
km/h13101213151617181614121010
Years Charted: 28 Source: National Weather Service, San Francisco
Results based on data collected through 1993


Average Days of Precipitation
 TotalJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
Days67111011631---124810
Years Charted: 57 Source: National Weather Service, San Francisco
Results based on data collected through 1993


Days With Sunshine
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
%66566269737273666572706253
Years Charted: 38 Source: National Weather Service, San Francisco
Results based on data collected through 1993


Average Morning Relative Humidity
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
%85818381828989929387818280
Years Charted: 7 Source: National Weather Service, San Francisco
Results based on data collected through 1993


Average Afternoon Relative Humidity
 YearJan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.
%66636361616872747366606363
Years Charted: 7 Source: National Weather Service, San Francisco
Results based on data collected through 1993





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