Typical Weather in Decatur;, IL in May
75° F Avg High
53° F Avg Low
8 Rainy Days
☀️ Temperature Summary
May is a popular time of year to visit, with an inviting climate characterized by warm temperatures. Highs in May are typically around 75°F, which is warmer than usual in Decatur;. Lows overnight are typically around 53°F. Temperatures will generally increase as the month goes on, with daily high temperatures ranging between 70°F and 79°F.
May is a great time to visit Decatur;, 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 25% chance of rain for any given day in May. It's one of the rainier months of the year for Decatur;, with total rainfall for the month around 5 inches.
Rainfall Throughout the Year
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