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United States of America

ROCKVILLE, MARYLAND


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Elevation: 415 feet     Latitude: 39 06N     Longitude: 077 06W

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MONTHLY - WEATHER AVERAGES SUMMARY   [ Show All Data ]
[ °C ]   °F
Average Temperature
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F5533.935.64454.763.571.775.974.367.456.746.336.6

Average High Temperature
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F65.542.745.254.966.57582.686.584.778.267.956.545.4

Average Low Temperature
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F44.625.12633.242.85260.665.363.956.745.536.127.7

Average Precipitation
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in.40.432.63.53.143.93.93.93.42.93.12.9

Average Number of Days With Precipitation
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days1079810101110997789

Highest Recorded Temperature
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F1057882891009710210510499938580

Lowest Recorded Temperature
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F-13-13-1211828353839282010-12

Average Length of Day
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Hours12.710.311.212.413.714.915.415.114.112.911.610.510

Average Number of Days Above 90F/32C
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days24.9---------0.31.34.99.56.52.20.1------

Average Number of Days Below 32F/0C
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days98.723.520.915.13.60.3---------0.12.511.321.4

Average Snowfall
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in.196.25.33.20.2------------------0.93.2

Most Rain Reported in a Month
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in.65.18.26.387.68.914.79.810.411.48.47.86.4

Least Rain Reported in a Month
Years on Record: 100  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in.26.10.30.20.10.4---0.70.40.20.1---0.40.3

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 
Days7.731.91.10.1------------------0.31.3







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