SAN FRANCISCO INTL AP, CALIFORNIA

Period of Record General Climate Summary - Precipitation

Station:(047769) SAN FRANCISCO WSO AP
From Year=1948 To Year=2012
Precipitation Total Snowfall
Mean High Year Low Year 1 Day Max. >=
0.01 in.
>=
0.10 in.
>=
0.50 in.
>=
1.00 in.
Mean High Year
in. in. - in. - in. dd/yyyy
or
yyyymmdd
# Days # Days # Days # Days in. in. -
January 4.31 11.26 1993 0.24 1991 5.59 04/1982 11 7 3 1 0.0 1.5 1962
February 3.58 13.64 1998 0.00 1953 2.92 02/1998 10 7 3 1 0.0 0.0 1949
March 2.88 9.01 1958 0.05 1988 1.99 08/1978 10 6 2 1 0.0 0.0 1949
April 1.38 6.36 1958 0.00 1949 2.30 02/1958 6 3 1 0 0.0 0.0 1949
May 0.39 3.81 1957 0.00 1962 1.53 20/1957 3 1 0 0 0.0 0.0 1949
June 0.13 1.49 2011 0.00 1949 0.81 02/1967 1 0 0 0 0.0 0.0 1949
July 0.02 0.35 1977 0.00 1948 0.35 02/1977 0 0 0 0 0.0 0.0 1948
August 0.04 0.66 1976 0.00 1948 0.56 19/1997 1 0 0 0 0.0 0.0 1948
September 0.17 2.30 1959 0.00 1951 2.29 18/1959 1 0 0 0 0.0 0.0 1948
October 1.00 7.30 1962 0.00 1959 2.64 13/2009 3 2 1 0 0.0 0.0 1948
November 2.31 7.94 1973 0.00 1959 2.39 30/1973 8 4 2 1 0.0 0.0 1948
December 3.73 12.30 1955 0.01 1989 3.16 11/1995 10 6 3 1 0.0 0.0 1948
Annual 19.94 38.34 1983 9.20 1953 5.59 19820104 65 38 14 5 0.0 1.5 1962
Winter 11.62 25.71 1998 2.71 1976 5.59 19820104 31 21 8 3 0.0 1.5 1962
Spring 4.65 15.70 1958 0.26 2008 2.30 19580402 19 11 3 1 0.0 0.0 1949
Summer 0.19 1.49 2011 0.00 1956 0.81 19670602 2 1 0 0 0.0 0.0 1949
Fall 3.48 10.69 1972 0.05 1995 2.64 20091013 12 6 2 1 0.0 0.0 1948
Table updated on Oct 31, 2012
For monthly and annual means, thresholds, and sums:
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov.


Western Regional Climate Center, wrcc@dri.edu