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United States of America

ROCK ISLAND, ILLINOIS


Home > North America > United States > Illinois
Elevation: 622 feet     Latitude: 41 34N     Longitude: 090 25W

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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °C ]   °F
TEMPERATURE 
Average Temperature
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 50.522.126.237.250.761.971.575.573.765.854.54027

Average High Temperature
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 59.530.434.64660.671.780.884.782.975.564.148.234.7

Average Low Temperature
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 41.513.717.928.340.952.162.166.364.656.144.831.919.4

Highest Recorded Temperature
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 103636883889410010210397917869

Lowest Recorded Temperature
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F -28-24-28-1411284248432818-4-21

Average Number of Days Above 90F/32C
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 16.3------------0.33.46.74.81.10.1------

Average Number of Days Below 32F/0C
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 12729.425.7215.20.1------------2.415.627.5

Average Number of Days Below 0F/-17C
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 12.56.23.30.3---------------------0.12.7



PRECIPITATION 
Average Precipitation
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 33.91.31.22.33.43.84.4443.22.52.11.8

Average Number of Days With Precipitation
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 1068710101110998888

Most Reported Precipitation in a Month
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 17.84.33.75.77.89.717.814.213.712.27.26.85.5

Least Reported Precipitation in a Month
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in ---0.1---0.30.80.20.90.30.40.4---0.20.1

Most Precipitation Reported in a Day
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 7.521.632.73.17.53.64.34.63.41.93.4

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 62335777665544

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 23111233332211

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 7---------1111111------



PRECIPITATION - RAIN 
Average Number of Rainy Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days104.57.56.69.610.4119.58.78.78.37.28.37.9

Most Rain Reported in a Day
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in7.521.52.12.33.17.53.14.34.62.51.93.4

Most Rain Reported in a Month
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in57.24.32.85.77.99.717.814.213.712.27.36.85.2

Least Rain Reported in a Month
Years on Record: 59  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in18.70.1---0.30.80.20.90.30.60.4---0.30.1



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 18.25.842.90.5---------------0.10.64.3

Most Snow Reported in a Month
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 21.51921.517.59---------------3.58.115.6



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 62461360107183143316213---11683447621191

Cooling Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 1072---------79122434628810313------

Growing Degree Days
Years on Record: 73  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days3173.6---------21368.9645790.5734.7474139.5------







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