Rockford, IL All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Rockford, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 105°F (41°C) | July 7, 2012 |
| Record Low | -30.8°F (-35°C) | January 31, 2019 |
| Lowest High | -14°F (-26°C) | January 18, 1994 |
| Highest Low | 80°F (27°C) | July 19, 2019 |
| Highest Mean | 90.5°F (33°C) | July 6, 2012 |
| Lowest Mean | -18.8°F (-28°C) | January 30, 2019 |
| Precipitation | ||
| Max in One Calendar Day | 5.70" (144.8 mm) | August 14, 1987 |
| Max in One Month | 14.23" (361.5 mm) | June 2018 |
| Least in One Month | 0.05" (1.3 mm) | September 1979 |
| Max in One Year | 56.52" (1435.5 mm) | 1973 |
| Least in One Year | 23.28" (591.3 mm) | 1976 |
| Snowfall | ||
| Max in One Calendar Day | 11.7" (29.7 cm) | November 25, 2018 |
| Max in One Month | 30.2" (76.7 cm) | February 1994 |
| Max in One Season | 74.6" (189.6 cm) | 1978-79 |
| Max in One Year | 84.4" (214.4 cm) | 2008 |
| Earliest Snow | 0.1" (0.3 cm) | October 18, 1972 |
| Earliest Measurable Snow | 0.1" (0.3 cm) | October 18, 1972 |
| Latest Snow | 0.2" (0.5 cm) | May 10, 1990 |
| Latest Measurable Snow | 0.2" (0.5 cm) | May 10, 1990 |
| Period of Record | ||
| Temperature | January 1, 1970 – August 1, 2026 | |
| Precipitation | January 1, 1970 – August 1, 2026 | |
| Snowfall | January 1, 1970 – August 1, 2026 | |
Note: Records compiled from NOAA GHCN-Daily observations at ROCKFORD GTR ROCKFORD AP (7 mi from Rockford, IL). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
Shareable Image Version
Frequently Asked Questions
What is the hottest temperature ever recorded in Rockford, IL?
The all-time record high in Rockford, IL is 105°F (41°C), set on July 7, 2012.
What is the coldest temperature ever recorded in Rockford, IL?
The all-time record low in Rockford, IL is -30.8°F (-35°C), set on January 31, 2019.
What is the most rain Rockford, IL has ever had in one day?
The most precipitation recorded in one calendar day near Rockford, IL is 5.70 inches, on August 14, 1987.
What is the biggest snowfall ever recorded in Rockford, IL?
The most snow recorded in one calendar day near Rockford, IL is 11.7 inches, on November 25, 2018.
Look Up Extremes by ZIP Code
See the all-time weather extremes for any US location
Rockford Weather History
Monthly averages, records, and climate data for Rockford
Illinois Weather Extremes
Statewide records and extremes for other Illinois cities