Typical Weather in Decatur;, IL in July
87° F Avg High
66° F Avg Low
6 Rainy Days
☀️ Temperature Summary
July is a popular time of year to visit, with an inviting climate characterized by warm temperatures. Highs in July are typically around 87°F, which is warmer than usual in Decatur;. Overnight lows will be around 66°F on average. This is the hottest month of the year in Decatur;.
Be ready to seek shade during the day, as mid-day temperatures can be dangerous if you're caught without a way to cool off. If you're looking to beat the heat a bit, you might consider visiting in June instead, when daily highs are typically closer to 84°.
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 19% chance of rain for any given day in July. It's one of the rainier months of the year for Decatur;, with total rainfall for the month around 4 inches.
Rainfall Throughout the Year
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