Decatur, IL
Illinois · Honest neighborhood reviews
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Median Income
$66K
Median Home Price
$136K
Neighborhoods
1
Climate
Weather in Decatur
🍂
Humid Continental
Cold, snowy winters and warm summers. Four distinct seasons with year-round precipitation.
Avg High
64°F
Avg Low
47°F
Annual Rain
35.1"
Hottest / Coldest
Jul / Jan
Monthly temperatures & rain
36°
22°J
46°
27°F
56°
36°M
65°
44°A
75°
55°M
84°
65°J
85°
68°J
82°
66°A
79°
61°S
68°
50°O
53°
37°N
42°
28°D
Temp range (high / low)
Precipitation (relative)
Wettest: AprBased on 2021–2023 climate data · Open-Meteo ERA5 archive · Temperatures in °F