Typical Weather in Rockford, IL in September
75° F Avg High
53° F Avg Low
5 Rainy Days
☀️ Temperature Summary
September is a popular time to visit, with an inviting climate featuring warm temperatures. Highs in September are typically around 75°F, which is warmer than usual in Rockford. You can expect overnight lows near 53°F most days. Daily high temperatures can range between 79°F and 68°F for the month of September.
September is a great time to visit Rockford, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In September you can expect close to a 18% chance of rain for any given day. It rains less than usual in September, with total rainfall for the month typically near 3 inches.
Rainfall Throughout the Year
Planning a trip to Rockford? Try our free trip weather planner