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O Fallon, MO Monthly Weather

Altitude - 153m | 38°48′36″N,90°42′0″W | map (OSM)

O Fallon, MO
77
°F
1 amFair2mphSW
Fri, July 25, 20251:43 AM (GMT -05:00)

July

SunMonTueWedThu
Jul 25
Scattered Thunderstorms
93
°F
low76
°F
Jul 26
Partly Cloudy
91
°F
low76
°F
Jul 27
Isolated Thunderstorms
92
°F
low76
°F
Jul 28
Clear
95
°F
low77
°F
Jul 29
Clear
94
°F
low77
°F
Jul 30
Isolated Thunderstorms
86
°F
low75
°F
Jul 31
Mostly Cloudy
79
°F
low70
°F
FriSat

August

SunMonTueWedThu
Aug 1
Partly Cloudy
78
°F
low64
°F
Aug 2
Partly Cloudy
79
°F
low62
°F
Aug 3
Partly Cloudy
82
°F
low64
°F
Aug 4
Partly Cloudy
84
°F
low67
°F
Aug 5
Mostly Clear
87
°F
low68
°F
Aug 6
Partly Cloudy
86
°F
low70
°F
Aug 7
Partly Cloudy
85
°F
low68
°F
Fri
Aug 8
Partly Sunny , T-Storms
90
°F
low71
°F
Sat
Aug 9
Intermittent Clouds
92
°F
low74
°F
Sun
Aug 10
Mostly Cloudy , T-Storms
92
°F
low76
°F
Mon
Aug 11
Mostly Sunny
96
°F
low76
°F
Tue
Aug 12
Mostly Cloudy , T-Storms
96
°F
low72
°F
Wed
Aug 13
Intermittent Clouds
85
°F
low65
°F
Thu
Aug 14
Mostly Sunny
84
°F
low62
°F
Fri
Aug 15
Mostly Sunny
83
°F
low63
°F
Sat
Aug 16
Partly Sunny
82
°F
low66
°F
Sun
Aug 17
Partly Sunny
87
°F
low67
°F
Mon
Aug 18
Mostly Cloudy , Showers
88
°F
low67
°F
Tue
Aug 19
Partly Sunny
87
°F
low70
°F
Wed
Aug 20
Intermittent Clouds
87
°F
low73
°F
Thu
Aug 21
Mostly Cloudy , T-Storms
87
°F
low65
°F
Fri
Aug 22
Sunny
88
°F
low69
°F
Sat
Aug 23
Partly Sunny , T-Storms
94
°F
low75
°F
Last updated 6h 6min ago

Temperature in O Fallon, MO for month

* O Fallon, MO Monthly weather is based on statistical data for the last 10 years. It is intended for personal use on an "as is" basis. This page provides the weather forecast for the next 30 days. In this forecast option you can see precipitation icons and maximum air temperature. The first 14 days reflect the current weather forecast for O Fallon, MO, and the following days reflect the weather based on statistical data from the last few years of measurements. This weather forecast will be useful for a general understanding of weather changes the nearest month for O Fallon, MO. Please note that long-term forecasts are not a forecast as such, but only reflect the statistics of past years.