Typical Weather in Superior, WI in September
66° F Avg High
49° F Avg Low
7 Rainy Days
☀️ Temperature Summary
September is one of the warmer months of the year for Superior, with highs averaging around 66°F. You can expect overnight lows near 49°F most days. Daily high temperatures can range between 70°F and 59°F for the month of September.
September is a great time to visit Superior, 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
You can expect about a 22% chance of rain for any given day in September. It's one of the rainier months of the year for Superior, with total rainfall for the month around 4 inches.
Rainfall Throughout the Year
Planning a trip to Superior? Try our free trip weather planner