Showers and thunderstorms are expected across the southern and eastern US this week, with heavy rain and localized flooding, particularly near the Gulf Coast. Monsoonal moisture will bring rain and potential flooding to parts of the Southwest. Heat and fire weather threats will continue to impact the West. Read More >
| Chicago Monthly and Yearly Normals (1991-2020) | |||||||||||||
| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| HIGH | 31.6 | 35.7 | 47.0 | 59.0 | 70.5 | 80.4 | 84.5 | 82.5 | 75.5 | 62.7 | 48.4 | 36.6 | 59.5 |
| LOW | 18.8 | 21.8 | 31.0 | 40.3 | 50.6 | 60.8 | 66.4 | 65.1 | 57.1 | 45.4 | 34.1 | 24.4 | 43.0 |
| AVERAGE | 25.2 | 28.8 | 39.0 | 49.7 | 60.6 | 70.6 | 75.4 | 73.8 | 66.3 | 54.0 | 41.3 | 30.5 | 51.2 |
| HEATING DEGREE DAYS | 1234 | 1015 | 808 | 468 | 198 | 31 | 2 | 4 | 77 | 355 | 713 | 1069 | 5974 |
| COOLING DEGREE DAYS | 0 | 0 | 2 | 8 | 60 | 199 | 326 | 276 | 116 | 15 | 0 | 0 | 1003 |
| PRECIPITATION | 1.99 | 1.97 | 2.45 | 3.75 | 4.49 | 4.10 | 3.71 | 4.25 | 3.19 | 3.43 | 2.42 | 2.11 | 37.86 |
| SNOWFALL | 11.3 | 10.7 | 5.5 | 1.3 | T | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 1.8 | 7.6 | 38.4 |
| Chicago Mean Number of Days (1991-2020) | |||||||||||||
| Temperatures | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL |
| HIGHS >=90 | - | - | - | - | 0.8 | 4.1 | 6.5 | 3.7 | 1.6 | - | - | - | 16.7 |
| HIGHS >=50 | 1.6 | 3.2 | 11.5 | 23.4 | 30.3 | 30.0 | 31.0 | 31.0 | 30.0 | 27.8 | 12.9 | 3.4 | 236.1 |
| HIGHS <=32 | 16.5 | 11.2 | 3.0 | 0.1 | - | - | - | - | - | - | 2.2 | 10.4 | 43.4 |
| LOWS <=32 | 28.1 | 24.4 | 19.9 | 6.0 | 0.2 | - | - | - | 0.1 | 2.7 | 14.5 | 25.4 | 121.3 |
| LOWS <=0 | 3.5 | 1.8 | 0.2 | - | - | - | - | - | - | - | - | 1.1 | 6.5 |
| Rockford Monthly and Yearly Normals (1991-2020) | |||||||||||||
| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| HIGH | 29.1 | 33.4 | 46.5 | 59.7 | 71.2 | 80.7 | 83.9 | 82.0 | 75.3 | 62.3 | 47.1 | 34.3 | 58.8 |
| LOW | 14.5 | 17.8 | 28.1 | 38.5 | 49.5 | 59.6 | 63.6 | 61.8 | 53.5 | 41.8 | 30.5 | 20.2 | 40.0 |
| AVERAGE | 21.8 | 25.6 | 37.3 | 49.1 | 60.4 | 70.1 | 73.8 | 71.9 | 64.4 | 52.0 | 38.8 | 27.3 | 49.4 |
| HEATING DEGREE DAYS | 1339 | 1003 | 860 | 482 | 199 | 27 | 3 | 8 | 107 | 412 | 786 | 1170 | 6497 |
| COOLING DEGREE DAYS | 0 | 0 | 2 | 5 | 54 | 182 | 274 | 222 | 89 | 11 | 0 | 0 | 838 |
| PRECIPITATION | 1.60 | 1.63 | 2.40 | 3.75 | 4.18 | 5.23 | 3.81 | 4.19 | 3.62 | 2.63 | 2.27 | 1.93 | 37.24 |
| SNOWFALL | 10.9 | 8.5 | 4.9 | 0.9 | T | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 2.3 | 9.4 | 37.1 |
| Rockford Mean Number of Days (1991-2020) | |||||||||||||
| Temperatures | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL |
| HIGHS >=90 | - | - | - | - | 0.7 | 3.9 | 5.4 | 3.2 | 1.5 | 0.1 | - | - | 14.8 |
| HIGHS >=50 | 1.3 | 2.1 | 11.7 | 24.4 | 30.7 | 30.0 | 31.0 | 31.0 | 30.0 | 27.3 | 12.1 | 2.5 | 234.1 |
| HIGHS <=32 | 18.5 | 12.6 | 3.7 | 0.1 | - | - | - | - | - | - | 2.8 | 12.3 | 50.0 |
| LOWS <=32 | 29.2 | 25.8 | 21.9 | 7.4 | 0.6 | - | - | - | 0.3 | 5.3 | 18.0 | 27.3 | 135.8 |
| LOWS <=0 | 5.6 | 3.1 | 0.4 | - | - | - | - | - | - | - | - | 2.4 | 11.5 |
Click here for the old 1981 to 2010 Normals for Chicago and Rockford
Follow us on X
Follow us on Facebook
Follow us on YouTube
LOT RSS Feed