Rockford (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Rockford.
Climate overview of Rockford
Rockford, Illinois, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 29°C (84°F) in July, while winters cool to -2°C (28°F) in January.
Annual rain/snowfall is moderate at around 997 mm (39 in), with June being the wettest month. The city also has warm summers and very cold winters.
Rockford Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rockford - and find the best time to visit.
Monthly Temperature in Rockford
Depending on the time of the year, temperatures range from comfortable to very cold in Rockford. Average daytime temperatures reach a comfortable 29°C (84°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -2°C (28°F).
At night, temperatures range from around 17°C (63°F) in July to -11°C (12°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rockford
Generally, Rockford has a moderate amount of precipitation, averaging 997 mm (39 in) of rain/snowfall annually. Rockford can be quite wet during June, receiving approximately 138 mm (5.4 in) of precipitation over 14 rainy days.
In contrast, during the driest month (January), you will experience much drier conditions, with 38 mm (1.5 in) of precipitation spread across 10 snowy days. For more details, please visit our Rockford Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Rockford
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and September
- Warmest weather: July and August
- Fewer rainy days: January, February, September, October and November
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -11°C (12°F).
Frequently asked questions about the climate in Rockford
What is the best time to visit Rockford?
May and September typically offer the most optimal weather in Rockford. In contrast, January, February, March, November and December tend to have less optimal conditions. Rockford has warm summers and very cold winters.
What temperatures can I expect in Rockford?
Daytime highs range from -2°C (28°F) in January to 29°C (84°F) in July. Nighttime lows range from -11°C (12°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Rockford get?
Annual rainfall is around 997 mm (39 in). June is the wettest month with 138 mm (5.4 in), while January is the driest with 38 mm (1.5 in).
Rockford 3-Day Forecast
Rockford on the map
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