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Hour-by-Hour Forecast for Decatur, Illinois, USA

Currently: 77 °F. Clear. (Weather station: Decatur Airport, USA). See more current weather

Hour-by-hour Forecast in Decatur — Graph

°F

Detailed Hourly Forecast — Next 24 hours

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  Conditions Comfort Precipitation
Time   Temp Weather Feels Like Wind   Humidity Chance Amount
1:00 am
Wed, Jun 10
77 °F Clear. 78 °F 7 mph 87% 22% 0.00" (snow)
0.00" (rain)
2:00 am 77 °F Clear. 79 °F 7 mph 86% 23% 0.00" (snow)
0.00" (rain)
3:00 am 77 °F Mostly clear. 79 °F 8 mph 86% 23% 0.00" (snow)
0.00" (rain)
4:00 am 77 °F Isolated tstorms. Scattered clouds. 78 °F 8 mph 87% 22% 0.00" (snow)
0.01" (rain)
5:00 am 77 °F Isolated tstorms. Partly cloudy. 78 °F 8 mph 87% 22% 0.00" (snow)
0.01" (rain)
6:00 am 77 °F Isolated tstorms. Broken clouds. 78 °F 8 mph 86% 20% 0.00" (snow)
0.00" (rain)
7:00 am 78 °F Isolated tstorms. Broken clouds. 80 °F 8 mph 84% 18% 0.00" (snow)
0.00" (rain)
8:00 am 80 °F Isolated tstorms. Mostly cloudy. 84 °F 10 mph 77% 15% 0.00" (snow)
0.00" (rain)
9:00 am 83 °F Isolated tstorms. Cloudy. 89 °F 12 mph 71% 10% 0.00" (snow)
0.00" (rain)
10:00 am 85 °F Overcast. 92 °F 14 mph 66% 0% 0.00" (snow)
0.00" (rain)
11:00 am 87 °F Cloudy. 95 °F 15 mph 63% 0% 0.00" (snow)
0.00" (rain)
12:00 pm 89 °F Broken clouds. 97 °F 16 mph 60% 0% 0.00" (snow)
0.00" (rain)
1:00 pm 90 °F Partly cloudy. 98 °F 17 mph 57% 0% 0.00" (snow)
0.00" (rain)
2:00 pm 91 °F Isolated tstorms. Broken clouds. 98 °F 13 mph 55% 9% 0.00" (snow)
0.00" (rain)
3:00 pm 91 °F Thundershowers. Mostly cloudy. 98 °F 10 mph 54% 25% 0.00" (snow)
0.00" (rain)
4:00 pm 90 °F Thundershowers. Cloudy. 97 °F 7 mph 53% 28% 0.00" (snow)
0.00" (rain)
5:00 pm 90 °F Thundershowers. Cloudy. 96 °F 7 mph 54% 35% 0.00" (snow)
0.00" (rain)
6:00 pm 88 °F Isolated tstorms. Cloudy. 94 °F 10 mph 57% 20% 0.00" (snow)
0.00" (rain)
7:00 pm 86 °F Isolated tstorms. Overcast. 91 °F 14 mph 61% 23% 0.00" (snow)
0.01" (rain)
8:00 pm 84 °F A few tstorms. Overcast. 89 °F 12 mph 65% 42% 0.00" (snow)
0.02" (rain)
9:00 pm 83 °F Thunderstorms. Overcast. 87 °F 10 mph 67% 40% 0.00" (snow)
0.04" (rain)
10:00 pm 79 °F Thunderstorms. Overcast. 82 °F 9 mph 75% 40% 0.00" (snow)
0.06" (rain)
11:00 pm 79 °F Thunderstorms. Overcast. 82 °F 10 mph 75% 42% 0.00" (snow)
0.05" (rain)
12:00 am
Thu, Jun 11
78 °F Thunderstorms. Overcast. 81 °F 11 mph 76% 44% 0.00" (snow)
0.04" (rain)
* Updated Tuesday, June 9, 2026 8:42:46 pm Decatur time - Weather by CustomWeather, © 2026

14 days extended forecast