Currently: 80 °F. Passing clouds. (Weather station: Lambert-St. Louis International Airport, USA). See more current weatherHour-by-hour Forecast in City of O'Fallon — Graph
°F
Time
Wind
(mph)
(mph)
Rain/Snow
()
()
Temp
(°F)
(°F)
59
63
67
71
75
79
83
87
91
95
99
Friday, July 25, 2025
2 am
81
7
3 am
80
6
4 am
79
5
5 am
78
3
6 am
77
1
7 am
78
2
8 am
80
1
9 am
83
2
10 am
85
4
11 am
87
5
12 pm
90
5
1 pm
91
6
2 pm
92
7
3 pm
93
8
4 pm
92
9
5 pm
91
10
0.01
6 pm
89
10
0.01
7 pm
87
10
0.01
8 pm
86
10
0.01
9 pm
85
10
0.01
10 pm
82
10
11 pm
81
9
Saturday, July 26, 2025
12 am
81
8
1 am
80
7
2 am
79
7
3 am
79
7
4 am
78
7
5 am
78
7
6 am
77
6
7 am
78
6
8 am
80
7
9 am
83
8
10 am
85
9
11 am
88
8
12 pm
90
7
1 pm
91
7
2 pm
92
5
3 pm
92
4
4 pm
92
3
5 pm
91
5
6 pm
90
8
7 pm
88
11
8 pm
86
10
9 pm
84
9
10 pm
83
8
11 pm
82
8
Sunday, July 27, 2025
12 am
81
7
1 am
80
7
2 am
79
7
3 am
78
6
4 am
78
6
5 am
78
6
6 am
77
5
7 am
78
4
8 am
80
5
9 am
83
6
10 am
85
7
11 am
88
7
12 pm
91
7
1 pm
94
6
2 pm
95
5
3 pm
95
4
4 pm
95
4
5 pm
95
5
6 pm
94
6
7 pm
92
7
8 pm
91
7
9 pm
89
6
10 pm
86
6
11 pm
84
6
Monday, July 28, 2025
12 am
83
6
1 am
82
5
2 am
82
5
3 am
81
4
4 am
81
3
5 am
80
3
6 am
80
3
7 am
81
4
8 am
84
5
9 am
87
5
10 am
90
6
11 am
93
6
12 pm
95
6
1 pm
96
7
2 pm
98
6
3 pm
99
6
4 pm
99
5
5 pm
98
4
6 pm
97
3
7 pm
95
5
8 pm
93
3
9 pm
91
1
10 pm
88
2
11 pm
86
1
Tuesday, July 29, 2025
12 am
86
1
1 am
85
0
2 am
84
1
3 am
83
2
4 am
82
3
5 am
82
3
6 am
81
4
7 am
82
4
8 am
85
5
9 am
89
5
10 am
92
6
11 am
95
6
12 pm
97
7
1 pm
98
7
2 pm
100
6
3 pm
100
6
4 pm
100
7
5 pm
100
6
6 pm
98
5
7 pm
96
5
8 pm
94
3
9 pm
92
2
10 pm
89
3
11 pm
87
1
Wednesday, July 30, 2025
12 am
85
2
1 am
83
4
2 am
82
4
3 am
81
5
4 am
81
6
5 am
82
6
6 am
82
6
7 am
81
6
8 am
84
7
9 am
87
8
10 am
89
9
11 am
88
10
12 pm
87
10
1 pm
86
11
2 pm
87
12
3 pm
87
13
4 pm
86
13
5 pm
85
13
6 pm
84
13
7 pm
82
13
8 pm
80
12
9 pm
78
11
10 pm
75
10
11 pm
74
10
Thursday, July 31, 2025
12 am
72
9
1 am
70
9
2 am
68
9
3 am
66
9
4 am
64
8
5 am
63
9
6 am
61
9
7 am
61
9
8 am
65
9
9 am
69
10
10 am
72
11
11 am
74
11
12 pm
77
11
1 pm
80
12
2 pm
81
12
3 pm
81
11
4 pm
81
11
5 pm
80
11
6 pm
79
11
Fri, Jul 25 at 2:00 am
81 °F
Passing showers. Scattered clouds.
Feels Like: 86 °F
Humidity: 81%
Precipitation: Rain: 0 Snow: 0
Precipitation Chance: 26%
SSW
Wind: 7 mph
Detailed Hourly Forecast — Next 24 hours
Scroll right to see more
| Conditions | Comfort | Precipitation | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Feels Like | Wind | Humidity | Chance | Amount | ||
| 2:00 am Fri, Jul 25 |  | 81 °F | Passing showers. Scattered clouds. | 86 °F | 7 mph | ↑ | 81% | 26% | 0.00" (snow) 0.00" (rain) |
| 3:00 am | | 80 °F | Passing showers. Partly cloudy. | 85 °F | 6 mph | ↑ | 83% | 27% | 0.00" (snow) 0.00" (rain) |
| 4:00 am | | 79 °F | Passing showers. Broken clouds. | 83 °F | 5 mph | ↑ | 85% | 28% | 0.00" (snow) 0.00" (rain) |
| 5:00 am | | 78 °F | Passing showers. Partly cloudy. | 81 °F | 3 mph | ↑ | 88% | 27% | 0.00" (snow) 0.00" (rain) |
| 6:00 am |  | 77 °F | Passing showers. Partly cloudy. | 79 °F | 1 mph | ↑ | 90% | 27% | 0.00" (snow) 0.00" (rain) |
| 7:00 am | | 78 °F | Passing showers. Scattered clouds. | 81 °F | 2 mph | ↑ | 88% | 26% | 0.00" (snow) 0.00" (rain) |
| 8:00 am | | 80 °F | Passing showers. Scattered clouds. | 85 °F | 1 mph | ↑ | 83% | 25% | 0.00" (snow) 0.00" (rain) |
| 9:00 am | | 83 °F | Passing showers. Partly cloudy. | 90 °F | 2 mph | ↑ | 77% | 24% | 0.00" (snow) 0.00" (rain) |
| 10:00 am |  | 85 °F | Thundershowers. Partly cloudy. | 94 °F | 4 mph | ↑ | 73% | 23% | 0.00" (snow) 0.00" (rain) |
| 11:00 am | | 87 °F | Passing showers. Scattered clouds. | 97 °F | 5 mph | ↑ | 66% | 23% | 0.00" (snow) 0.00" (rain) |
| 12:00 pm |  | 90 °F | Sunny. | 100 °F | 5 mph | ↑ | 61% | 12% | 0.00" (snow) 0.00" (rain) |
| 1:00 pm | | 91 °F | Sunny. | 101 °F | 6 mph | ↑ | 57% | 12% | 0.00" (snow) 0.00" (rain) |
| 2:00 pm | | 92 °F | Sunny. | 102 °F | 7 mph | ↑ | 54% | 11% | 0.00" (snow) 0.00" (rain) |
| 3:00 pm | | 93 °F | Passing showers. Scattered clouds. | 102 °F | 8 mph | ↑ | 53% | 22% | 0.00" (snow) 0.00" (rain) |
| 4:00 pm | | 92 °F | Passing showers. Partly cloudy. | 101 °F | 9 mph | ↑ | 53% | 21% | 0.00" (snow) 0.00" (rain) |
| 5:00 pm | | 91 °F | Passing showers. Partly cloudy. | 101 °F | 10 mph | ↑ | 56% | 25% | 0.00" (snow) 0.00" (rain) |
| 6:00 pm | | 89 °F | Passing showers. Partly cloudy. | 99 °F | 10 mph | ↑ | 61% | 31% | 0.00" (snow) 0.01" (rain) |
| 7:00 pm | | 87 °F | Passing showers. Partly cloudy. | 96 °F | 10 mph | ↑ | 67% | 39% | 0.00" (snow) 0.01" (rain) |
| 8:00 pm | | 86 °F | Passing showers. Partly cloudy. | 95 °F | 10 mph | ↑ | 69% | 42% | 0.00" (snow) 0.01" (rain) |
| 9:00 pm | | 85 °F | Passing showers. Scattered clouds. | 93 °F | 10 mph | ↑ | 74% | 41% | 0.00" (snow) 0.01" (rain) |
| 10:00 pm | | 82 °F | Passing showers. Scattered clouds. | 89 °F | 10 mph | ↑ | 82% | 39% | 0.00" (snow) 0.01" (rain) |
| 11:00 pm | | 81 °F | Passing showers. Partly cloudy. | 87 °F | 9 mph | ↑ | 84% | 39% | 0.00" (snow) 0.00" (rain) |
| 12:00 am Sat, Jul 26 | | 81 °F | Passing showers. Broken clouds. | 86 °F | 8 mph | ↑ | 84% | 27% | 0.00" (snow) 0.00" (rain) |
| 1:00 am | | 80 °F | Passing showers. Broken clouds. | 85 °F | 7 mph | ↑ | 85% | 21% | 0.00" (snow) 0.00" (rain) |
| * Updated Thursday, July 24, 2025 8:42:32 pm City of O'Fallon time - Weather by CustomWeather, © 2025 | |||||||||