Historical Weather in Rockford, IL
See 55+ years of weather history for any date in Rockford going back to 1970.
Part of Illinois weather history · Illinois temperature records
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Today in Rockford Weather HistorySee records, averages, and 55+ years of data for today's date
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Monthly Climate Averages
Historical temperature and precipitation averages for Rockford, IL, based on 55+ years of weather data.
Warmest MonthJulyAvg High: 84°F / Low: 63°F
Coldest MonthJanuaryAvg High: 28°F / Low: 12°F
Jan
28°/ 12°
💧 3.9"
❄️ 1.4"
Feb
33°/ 16°
💧 4.8"
❄️ 1.5"
Mar
45°/ 27°
💧 6.3"
❄️ 1.5"
Apr
59°/ 37°
💧 8.5"
❄️ 1.2"
May
71°/ 48°
💧 8.2"
❄️ 0.2"
Jun
80°/ 58°
💧 11.8"
Jul
84°/ 63°
💧 10.6"
Aug
82°/ 61°
💧 11.8"
Sep
75°/ 53°
💧 11.1"
Oct
62°/ 41°
💧 7.4"
❄️ 1.0"
Nov
47°/ 30°
💧 6.5"
❄️ 1.4"
Dec
33°/ 18°
💧 5.5"
❄️ 1.5"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Rockford, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Avg high Avg low
Rockford, IL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Rain (in) Snow (in)
Rockford, IL Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
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Best Time to Visit Rockford, IL
Rockford, IL has no months that meet our "pleasant" threshold — every season has tradeoffs.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pleasant (65-82°F, ≤2.5" rain) Mild Less ideal
Rockford Temperature Records
- Record High: The hottest temperature ever recorded in Rockford, IL is 105°F, set on July 7, 2012.
- Record Low: The coldest temperature ever recorded in Rockford, IL is -34°F, set on February 3, 1996.
- Data Coverage: Based on 57 years of data from NOAA weather station: ROCKFORD GTR ROCKFORD AP.
All-Time Record High
105°F
July 7, 2012
All-Time Record Low
-34°F
February 3, 1996
Monthly Temperature Records in Rockford
| Month | Record High | Record Low |
|---|---|---|
| January | 63°F(1989) | -31°F(2019) |
| February | 78°F(2024) | -34°F(1996) |
| March | 85°F(1986) | -17°F(2015) |
| April | 92°F(1980) | 5°F(1982) |
| May | 99°F(2012) | 22°F(2002) |
| June | 101°F(1988) | 34°F(1985) |
| July | 105°F(2012) | 41°F(1970) |
| August | 104°F(1988) | 36°F(1982) |
| September | 99°F(1978) | 24°F(1974) |
| October | 90°F(2025) | 14°F(1988) |
| November | 77°F(2016) | -10°F(1977) |
| December | 69°F(2021) | -26°F(1983) |
Rockford Snow RecordsSee the top 10 snowiest days ever recorded
→Holiday Weather in Rockford
Weather Analysis & Trends
RecordsHottest Temperatures Ever Recorded in Every US StateAll 50 state record highs ranked, including Illinois.Severe WeatherTornado Season 2026: Forecasts & What to ExpectAn EF5 already, and the peak still ahead.Climate ForecastEl Niño 2026: What Every US Region Should Expect85% likely by late 2026. Region-by-region impact analysis.