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United States of America

DECATUR, ILLINOIS


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Elevation: 207 meters     Latitude: 39 50N     Longitude: 088 52W

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MONTHLY - WEATHER AVERAGES SUMMARY   [ Show All Data ]
[ °F ]   °C
Average Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C11.5-2.6-0.65.311.617.122.324.323.119.212.56.1-0.7

Average High Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C17.11.8410.817.723.428.130.329.125.918.810.93.8

Average Low Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C5.9-7-5.1-0.15.410.816.418.317.112.46.11.2-5.1

Average Precipitation
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm977.943.250.86696.5109.2111.899.19473.783.886.463.5

Highest Recorded Temperature
Years on Record: 67  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C45222331343840454140352821

Lowest Recorded Temperature
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C-31-30-31-22-9-3---74-6-11-19-28

Average Length of Day
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Hours12.710.211.212.513.814.915.515.214.112.911.610.59.9

Average Number of Days Above 90F/32C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days20.3------------0.73.88.55.11.90.3------

Average Number of Days Below 32F/0C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days113.426.823.516.650.3------------2.913.824.5

Average Snowfall
Years on Record: 64  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm511212101------------------310

Average Number of Rainy Days
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days67546666555444

Average Dew Point
Years on Record: 12  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C5-6-3-1410151817126----4

Average Wind Speed
Years on Record: 20  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
km/h15.818.818.518.919.516.11311.710.811.71517.817.5




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