Rockford
The tables below display average monthly climate and weather indicators in Rockford Illinois.
Temperature by: Fahrenheit / Centigrade
Rockford Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Avg. Temperature | 18.2 | 22.9 | 35.0 | 47.7 | 59.1 | 68.8 | 73.2 | 70.9 | 63.1 | 51.5 | 38.0 | 24.0 | 47.7 |
Avg. Max Temperature | 26.6 | 31.6 | 43.8 | 58.4 | 70.8 | 80.2 | 83.8 | 81.4 | 74.1 | 62.3 | 46.3 | 31.8 | 57.6 |
Avg. Min Temperature | 9.8 | 14.2 | 26.1 | 36.9 | 47.4 | 57.4 | 62.5 | 60.3 | 52.0 | 40.6 | 29.5 | 16.1 | 37.7 |
Days with Max Temp of 90 F or Higher | 0.0 | 0.0 | 0.0 | < 0.5 | 1.0 | 3.0 | 6.0 | 3.0 | 1.0 | < 0.5 | 0.0 | 0.0 | 14.0 |
Days with Min Temp Below Freezing | 29.0 | 26.0 | 23.0 | 9.0 | 1.0 | 0.0 | 0.0 | 0.0 | 1.0 | 7.0 | 20.0 | 28.0 | 144 |
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Rockford Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Heating Degree Days | 1451 | 1179 | 930 | 519 | 239 | 24.0 | 5.0 | 15.0 | 99.0 | 427 | 810 | 1271 | 6969 |
Cooling Degree Days | 0.0 | 0.0 | 0.0 | 0.0 | 56.0 | 138 | 259 | 198 | 42.0 | 9.0 | 0.0 | 0.0 | 702 |
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Rockford Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Precipitation (inches) | 1.3 | 1.1 | 2.5 | 3.7 | 3.7 | 4.5 | 4.1 | 4.2 | 3.8 | 2.9 | 2.6 | 2.1 | 36.3 |
Days with Precipitation 0.01 inch or More | 9.0 | 8.0 | 11.0 | 12.0 | 12.0 | 10.0 | 10.0 | 9.0 | 9.0 | 9.0 | 9.0 | 10.0 | 118 |
Monthly Snowfall (inches) | 9.0 | 7.0 | 6.3 | 1.3 | 0.0 | < 0.05 | < 0.05 | < 0.05 | 0.0 | 0.1 | 2.7 | 9.1 | 35.5 |
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Other Rockford Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Average Wind Speed | 10.5 | 10.6 | 11.6 | 11.8 | 10.4 | 9.3 | 8.1 | 7.7 | 8.4 | 9.5 | 10.6 | 10.4 | 9.9 |
Clear Days | 7.0 | 7.0 | 6.0 | 6.0 | 8.0 | 7.0 | 9.0 | 9.0 | 10.0 | 10.0 | 6.0 | 7.0 | 93.0 |
Partly Cloudy Days | 7.0 | 6.0 | 8.0 | 8.0 | 9.0 | 11.0 | 12.0 | 11.0 | 9.0 | 7.0 | 6.0 | 6.0 | 98.0 |
Cloudy Days | 17.0 | 15.0 | 17.0 | 16.0 | 14.0 | 12.0 | 10.0 | 11.0 | 12.0 | 13.0 | 18.0 | 19.0 | 174 |
Percent of Possible Sunshine | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Avg. Relative Humidity | 57.5 | 76.5 | 74.0 | 71.5 | 68.5 | 68.0 | 71.5 | 75.0 | 75.5 | 73.0 | 71.5 | 75.5 | 78.5 |
Weather information for other cities in Illinois