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United States of America

FALLS CHURCH, VIRGINIA


Home > North America > United States > Virginia
Elevation: 10 meters     Latitude: 38 53N     Longitude: 077 11W

WEATHER
 
CURRENT CONDITIONS

 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °F ]   °C
TEMPERATURE 
Average Temperature
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C12.90.92.26.312.817.922.524.723.819.913.87.61.8

Average High Temperature
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C196.17.712.519.72529.331.130.126.320.313.46.8

Average Low Temperature
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C6.7-4.2-3.30.15.910.915.718.317.613.77.21.8-3.1

Highest Recorded Temperature
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C38.925.62530.634.435.637.238.938.336.732.829.422.8

Lowest Recorded Temperature
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C-25-25-17.8-17.2-6.1-1.74.49.46.1-0.6-5.6-11.1-18.3

Average Number of Days Above 90F/32C
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days33.9---------0.41.67.712.292.90.1------

Average Number of Days Below 32F/0C
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days106.424.320.7174.50.3---------0.12.913.223.4

Average Number of Days Below 0F/-17C
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days10.90.1---------------------------0.1



PRECIPITATION 
Average Precipitation
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm104163699581889811011596687881

Average Number of Days With Precipitation
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days104981010119997688

Most Precipitation Reported in a Day
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm.178.143.738.468.86152.86692.7100.6178.182.359.249.8

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days72668776665456

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days28222223332223

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days9------1---11111111



PRECIPITATION - RAIN 
Most Rain Reported in a Month
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm1231117123157190160225277373291118199172

Least Rain Reported in a Month
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm803516382643341316121205



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm.6515.815.513.5---------------------4.815.2

Most Snow Reported in a Month
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm.165.168.355.960.72.5------------------25.673.2



DEGREE DAYS 
Heating Degree Days
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days2928.7539.1455.9373.7166.711.2------------141.2321.7510.7

Cooling Degree Days
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days542---------------125198.1169.749.2---------

Growing Degree Days
Years on Record: 21  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days2006.2---------83.3247.2375456.4428299.2117.1------



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  
Hours12.710.311.212.413.714.815.415.114.112.811.610.510



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/m213.97.19.913.416.819.220.320.117.915.312.186.2

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/m25.8345.57.28.38.98.67.65.94.33.22.7

Average Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m215.311.213.415.61717.617.817.917.31716.312.310.3

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/m21511.313.414.715.816.917.417.616.416.616.612.610.4

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/m213.97.19.913.416.819.220.320.117.915.312.186.2

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/m25.934.15.77.48.69.18.87.86.34.63.32.7

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/m218.113.416.718.919.420.720.719.519.319.920.615.612.3

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/m219.61418.519.82023.123.620.82021.523.117.413

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/m211.467.910.814.512.717.117.915.813.19.85.94.8

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/m25.42.83.65.16.87.78.38.37.35.43.52.82.6

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/m212.199.912.114.511.715.116.115.314.112.38.17.2

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/m210.18.38.69.711.87.212.113.912.912.210.876.4




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