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United States of America

SAN MATEO, CALIFORNIA


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Elevation: 1 foot     Latitude: 37 37N     Longitude: 122 23W

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MONTHLY - WEATHER AVERAGES SUMMARY   [ Show All Data ]
[ °C ]   °F
Average Temperature
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 57.349.152.153.755.858.561.462.763.664.261.155.249.8

Average High Temperature
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 65.355.859.161.263.866.87071.472.173.570.262.956.4

Average Low Temperature
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 49.342.54546.247.750.352.754.15554.95247.443.3

Average Precipitation
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 204.43.62.81.40.40.1------0.212.33.8

Average Number of Days With Precipitation
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 64111010631---113810

Highest Recorded Temperature
Years on Record: 85  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F1067278859297106105100103998575

Lowest Recorded Temperature
Years on Record: 85  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F20242530313641434238342520

Average Length of Day
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Hours12.610.411.312.413.714.715.214.91412.811.610.610.1

Average Number of Days Above 90F/32C
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 3.9---------0.10.40.80.50.31.40.3------

Average Number of Days Below 32F/0C
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 210.2---------------------------0.7

Average Number of Rainy Days
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days62111010631------14710

Most Rain Reported in a Month
Years on Record: 50  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in.38.311.39.596.43.80.90.30.72.37.37.912.3

Average Relative Humidity
Years on Record: 20  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%75.681.379.875.572.67371.975.87674.2727679.2

Average Morning Relative Humidity
Years on Record: 43  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%82878682797877818382838586

Average Evening Relative Humidity
Years on Record: 43  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%63686664626160616260606368

Average Dew Point
Years on Record: 43  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F47424444454750525352504642







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