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Climate
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United States of America

WALNUT CREEK, CALIFORNIA


Home > North America > United States > California
Elevation: 58 meters     Latitude: 37 54N     Longitude: 122 04W

WEATHER
 
CURRENT CONDITIONS

Sunrise/Set
09:07 am
11:02 pm
Local Time
11:49 am EDT
4 May, 2024
 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °F ]   °C
TEMPERATURE 
Average Temperature
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C14.87.49.911.413.816.319.421.821.52016.411.88.1

Average High Temperature
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C22.412.816.318.421.724.328.131.230.729.124.818.713.4

Average Low Temperature
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C7.22.13.44.368.310.812.412.310.97.94.82.7

Highest Recorded Temperature
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C46.126.728.336.134.439.442.846.144.445.638.331.724.4

Lowest Recorded Temperature
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C-8.3-8.3-6.1-4.4-2.2---1.13.352.2-2.8-5-7.8

Average Number of Days Above 90F/32C
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days50.2------0.10.32.9814.213.492.3------

Average Number of Days Below 32F/0C
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days36.512.26.13.60.80.1------------0.34.19.3



PRECIPITATION 
Average Precipitation
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm511115926335144---16275797

Average Number of Days With Precipitation
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days551098531------1369

Most Reported Precipitation in a Month
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm4023812951831649227427117273180402

Least Reported Precipitation in a Month
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm---191------------------------------

Most Precipitation Reported in a Day
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm106.788.991.454.96635.612.93.825.966106.772.483.3

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days3576532------------246

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days143221---------------123

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days5111---------------------11



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm0.20.2---------------------------------

Most Snow Reported in a Month
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm10.210.2------------------------------0.5



DEGREE DAYS 
Heating Degree Days
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days557.2169.488.363.922.27.20.6---1.1---3.952.8147.8

Cooling Degree Days
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days382.2------0.63.317.862.2114.41056513.9------

Growing Degree Days
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1910.7------43.1115194.6283.3366.8356.5300198.153.3---



SKY CONDITIONS 
Average Length of Day
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Hours12.710.411.312.413.714.715.3151412.811.610.610.1



SOLAR RADIATION 
Average Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m218.27.911.416.92226.128.828.325.420.614.99.67.2

Average Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m24.633.84.85.96.56.365.34.43.632.6

Average Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m220.212.615.720.522.723.824.724.924.923.820.915.212.2

Average Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m224.213.31722.426.230.23433.931.928.423.616.713

Maximum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m218.27.911.416.92226.128.828.325.420.614.99.67.2

Maximum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m25.43.24.25.778.57.87.1654.13.42.8

Maximum Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m223.516.422.126.22526.426.326.926.925.922.919.118.4

Maximum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m230.318.827.232.23136.538.539.436.532.326.722.822.1

Minimum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m215.65.7813.918.619.325.325.723.919.313.385.9

Minimum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m23.72.62.63.25.15.25.44.84.33.63.12.41.9

Minimum Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m216.67.89.816.118.917.72222.823.4221811.79.2

Minimum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m217.86.88.315.218.916.726.628.328.325.11911.68.9




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