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United States of America

CLAYTON, CALIFORNIA


Home > North America > United States > California
Elevation: 2040 feet     Latitude: 37 52N     Longitude: 121 56W

WEATHER
 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °C ]   °F
TEMPERATURE 
Average Temperature
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 58.54748.449.853.458.965.773.172.669.862.653.147.7

Average High Temperature
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 69.254.956.759.264.170.878.786.485.882.673.86255.6

Average Low Temperature
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 47.83940.140.442.646.952.759.959.45751.344.139.7

Highest Recorded Temperature
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 11177808490102107111107107999077

Lowest Recorded Temperature
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 14181425233137344135312614

Average Number of Days Above 100F/38C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days1.8---------------0.10.90.60.1---------

Average Number of Days Above 90F/32C
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 39.1------------15.311.911.47.52.1------

Average Number of Days Above 80F/26C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days92.4------0.21.96.212.322.222.218.58.60.4---

Average Number of Days Above 70F/21C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days166.2123.88.815.623.329.629.826.220.15.50.7

Average Number of Days Above 60F/15C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days2509.29.214.619.225.428.730.930.929.52816.67.7

Average Number of Days Above 50F/10C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days3372322.627.328.230.7303131303128.324.1

Average Number of Days Above 40F/4C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days36430.627.830.929.93130313130313030.7

Average Number of Days Below 70F/21C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days353.43128313030.728.727.127.827.630.63031

Average Number of Days Below 60F/15C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days302.8312830.829.227.221.614.815.717.826.229.431

Average Number of Days Below 50F/10C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days22129.126.427.924.619.511.44.23.86.114.223.929.8

Average Number of Days Below 40F/4C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days79.115.713.412.19.93.20.3------0.11.57.515.4

Average Number of Days Below 32F/0C
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 17.44.63.22.61.40.1---------------1.44.1

Average Number of Days Below 20F/-6C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.2---0.1---------------------------0.1



PRECIPITATION 
Average Precipitation
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 24.14.94.23.31.80.80.2---0.10.31.434.2

Average Number of Days With Precipitation
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 67111010741---114810

Most Reported Precipitation in a Month
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 15.41213.510.46.14.61.30.61.12.810.77.915.4

Least Reported Precipitation in a Month
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in ---0.3---0.10.1------------------------

Most Precipitation Reported in a Day
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 554.72.22.41.61.10.60.624.83.64.8

Avg. No. of Days w/Precip. Above 0.1in/2.5mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days46.28.187.14.12.10.5---0.10.82.45.67.4

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 4387742---------1257

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 1633211------------123

Avg. No. of Days w/Precip. Above 0.5in/13mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days16.833.32.61.10.8---------0.112.12.8

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 5111---------------------11



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 1.50.50.20.30.4---------------------0.1

Average Number of Days With Snow
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.60.20.10.2------------------------0.1

Most Snow Reported in a Month
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 1757817------------------21.5

Avg. No. of Days w/Snow Above 1in/2.5cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.50.20.10.1------------------------0.1

Avg. # of Days w/Snow Depth Above 1in/2.5cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.3---0.10.1------------------------0.1



DEGREE DAYS 
Heating Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 324253546344234221897242146148361542

Cooling Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 963------21354125256245189726---

Growing Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days371152549916531147969768859239313841



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 
kWh/m25.12.23.24.76.17.387.97.15.74.22.72

Average Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m21.30.81.11.31.71.81.81.71.51.210.80.7

Average Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m25.63.54.45.76.36.66.96.96.96.65.84.23.4

Average Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m26.73.74.76.27.38.49.59.48.97.96.64.73.6

Maximum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m25.12.23.24.76.17.387.97.15.74.22.72

Maximum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m21.50.91.21.61.92.42.221.71.41.20.90.8

Maximum Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m26.54.66.17.377.37.37.57.57.26.45.35.1

Maximum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m28.45.27.698.610.110.710.910.197.46.36.1

Minimum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m24.31.62.23.95.25.477.26.65.43.72.21.7

Minimum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m210.70.70.91.41.51.51.31.210.90.70.5

Minimum Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m24.62.22.74.55.34.96.16.36.56.153.22.6

Minimum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m251.92.34.25.34.67.47.97.975.33.22.5




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