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

Currently: 76 °F. Sunny. (Weather station: Decatur Airport, USA). See more current weather

Hour-by-hour Forecast in Decatur — Graph

°F
Time
Wind
(mph)
Rain/Snow
()
Temp
(°F)
66
69
72
75
78
81
84
87
90
93
96
Wednesday, August 13, 2025
9 am
77
6
10 am
80
6
11 am
82
7
12 pm
84
8
1 pm
85
9
2 pm
86
9
3 pm
86
9
0.01
4 pm
85
9
0.01
5 pm
84
8
0.01
6 pm
82
7
0.01
7 pm
81
7
0.01
8 pm
78
7
9 pm
77
7
10 pm
74
7
11 pm
73
7
Thursday, August 14, 2025
12 am
72
7
1 am
72
7
2 am
70
6
3 am
70
6
4 am
69
6
5 am
69
6
6 am
68
5
7 am
69
5
8 am
71
5
9 am
75
5
10 am
78
6
11 am
81
5
12 pm
82
5
1 pm
84
4
2 pm
85
4
3 pm
85
4
4 pm
85
4
5 pm
84
3
6 pm
83
2
7 pm
81
2
8 pm
78
2
9 pm
76
1
10 pm
73
2
11 pm
71
3
Friday, August 15, 2025
12 am
71
5
1 am
71
6
2 am
70
5
3 am
69
4
4 am
68
4
5 am
68
4
6 am
67
5
7 am
69
5
8 am
72
5
9 am
77
5
10 am
82
5
11 am
84
5
12 pm
86
6
1 pm
87
6
2 pm
88
6
3 pm
89
6
4 pm
89
5
5 pm
89
5
6 pm
88
4
7 pm
86
5
8 pm
83
6
9 pm
81
6
10 pm
78
7
11 pm
76
7
Saturday, August 16, 2025
12 am
77
7
1 am
76
7
2 am
75
7
3 am
75
8
4 am
76
8
5 am
75
7
6 am
75
7
7 am
76
6
8 am
78
7
9 am
83
8
10 am
86
9
11 am
89
8
12 pm
91
7
1 pm
92
7
2 pm
93
7
3 pm
94
6
4 pm
94
6
5 pm
93
5
6 pm
92
5
7 pm
90
5
8 pm
87
6
9 pm
85
6
10 pm
81
7
11 pm
79
7
Sunday, August 17, 2025
12 am
79
7
1 am
78
7
2 am
77
7
3 am
76
6
4 am
76
6
5 am
76
6
6 am
75
5
7 am
76
5
8 am
78
6
9 am
83
7
10 am
87
7
11 am
90
7
12 pm
92
7
1 pm
94
8
2 pm
94
8
3 pm
94
8
4 pm
94
8
5 pm
93
7
6 pm
91
6
7 pm
89
6
8 pm
86
6
9 pm
83
6
10 pm
80
6
11 pm
79
7
Monday, August 18, 2025
12 am
78
7
1 am
77
7
2 am
77
7
3 am
76
7
4 am
75
7
5 am
74
7
6 am
74
7
7 am
74
6
8 am
77
7
9 am
81
7
10 am
84
8
11 am
87
8
12 pm
89
8
1 pm
90
8
2 pm
91
8
3 pm
92
8
4 pm
92
8
5 pm
91
7
6 pm
91
6
7 pm
88
6
8 pm
85
6
9 pm
82
6
10 pm
79
6
11 pm
78
6
Tuesday, August 19, 2025
12 am
77
6
1 am
77
6
2 am
77
5
3 am
77
5
4 am
77
7
5 am
77
6
6 am
78
5
7 am
78
5
8 am
80
5
9 am
83
5
10 am
86
6
11 am
88
5
12 pm
90
6
1 pm
91
7
2 pm
92
7
3 pm
92
8
4 pm
93
9
5 pm
92
10
6 pm
90
12
7 pm
89
15
0.02
8 pm
85
14
0.06
9 pm
81
13
0.08
10 pm
76
13
0.09
11 pm
76
12
Wednesday, August 20, 2025
0.08
12 am
74
12
Wed, Aug 13 at 9:00 am
77 °F
Partly cloudy.
Feels Like: 78 °F
Humidity: 83%
Precipitation: Rain: 0 Snow: 0
Precipitation Chance: 0%
N
Wind: 6 mph

Detailed Hourly Forecast — Next 24 hours

Scroll right to see more
 ConditionsComfortPrecipitation
Time TempWeatherFeels LikeWind HumidityChanceAmount
9:00 am
Wed, Aug 13
77 °FPartly cloudy.78 °F6 mph83%0%0.00" (snow)
0.00" (rain)
10:00 am80 °FPartly cloudy.83 °F6 mph78%0%0.00" (snow)
0.00" (rain)
11:00 am82 °FPartly cloudy.87 °F7 mph72%0%0.00" (snow)
0.00" (rain)
12:00 pm84 °FScattered clouds.89 °F8 mph65%0%0.00" (snow)
0.00" (rain)
1:00 pm85 °FScattered clouds.90 °F9 mph61%0%0.00" (snow)
0.00" (rain)
2:00 pm86 °FPartly cloudy.90 °F9 mph59%4%0.00" (snow)
0.00" (rain)
3:00 pm86 °FPassing showers. Broken clouds.90 °F9 mph59%21%0.00" (snow)
0.00" (rain)
4:00 pm85 °FPassing showers. Broken clouds.89 °F9 mph61%32%0.00" (snow)
0.01" (rain)
5:00 pm84 °FPassing showers. Broken clouds.88 °F8 mph63%38%0.00" (snow)
0.01" (rain)
6:00 pm82 °FPassing showers. Broken clouds.86 °F7 mph67%37%0.00" (snow)
0.01" (rain)
7:00 pm81 °FPassing showers. Broken clouds.84 °F7 mph71%32%0.00" (snow)
0.01" (rain)
8:00 pm78 °FPassing showers. Partly cloudy.81 °F7 mph77%23%0.00" (snow)
0.01" (rain)
9:00 pm77 °FPartly cloudy.79 °F7 mph79%6%0.00" (snow)
0.00" (rain)
10:00 pm74 °FPartly cloudy.74 °F7 mph85%0%0.00" (snow)
0.00" (rain)
11:00 pm72 °FPartly cloudy.71 °F7 mph88%0%0.00" (snow)
0.00" (rain)
12:00 am
Thu, Aug 14
72 °FPartly cloudy.71 °F7 mph87%0%0.00" (snow)
0.00" (rain)
1:00 am72 °FScattered clouds.69 °F7 mph88%0%0.00" (snow)
0.00" (rain)
2:00 am70 °FScattered clouds.67 °F6 mph91%0%0.00" (snow)
0.00" (rain)
3:00 am70 °FScattered clouds.70 °F6 mph91%0%0.00" (snow)
0.00" (rain)
4:00 am69 °FScattered clouds.69 °F6 mph91%0%0.00" (snow)
0.00" (rain)
5:00 am69 °FMostly clear.69 °F6 mph92%0%0.00" (snow)
0.00" (rain)
6:00 am68 °FMostly clear.68 °F5 mph92%0%0.00" (snow)
0.00" (rain)
7:00 am69 °FMostly sunny.69 °F5 mph89%0%0.00" (snow)
0.00" (rain)
8:00 am71 °FMostly sunny.71 °F5 mph82%0%0.00" (snow)
0.00" (rain)
* Updated Wednesday, August 13, 2025 2:42:28 am Decatur time - Weather by CustomWeather, © 2025

14 days extended forecast