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O Fallon, MO Monthly Weather

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

O Fallon, MO
91
°F
12:30 pmPartly Cloudy6mphNW
Tue, August 19, 20251:19 PM (GMT -05:00)

August

SunMon
Aug 19
Scattered Thunderstorms
90
°F
low76
°F
Aug 20
Partly Cloudy
85
°F
low71
°F
Aug 21
Partly Cloudy
81
°F
low66
°F
Aug 22
Mostly Clear
81
°F
low65
°F
Aug 23
Partly Cloudy
84
°F
low66
°F
Aug 24
Clear
79
°F
low61
°F
Aug 25
Partly Cloudy
75
°F
low58
°F
Aug 26
Partly Cloudy
75
°F
low55
°F
Aug 27
Partly Cloudy
76
°F
low57
°F
Aug 28
Partly Cloudy
76
°F
low61
°F
Aug 29
Showers
76
°F
low64
°F
Aug 30
Few Showers
79
°F
low64
°F
Aug 31
Partly Cloudy
80
°F
low64
°F
MonTueWedThuFriSat

September

Sun
Sep 1
Partly Cloudy
82
°F
low63
°F
Tue
Sep 2
Partly Sunny
81
°F
low61
°F
Wed
Sep 3
T-Storms
78
°F
low69
°F
Thu
Sep 4
T-Storms
76
°F
low62
°F
Fri
Sep 5
Partly Sunny
81
°F
low61
°F
Sat
Sep 6
Sunny
86
°F
low65
°F
Sun
Sep 7
Mostly Sunny
90
°F
low60
°F
Mon
Sep 8
Sunny
82
°F
low55
°F
Tue
Sep 9
Mostly Sunny
80
°F
low57
°F
Wed
Sep 10
Sunny
86
°F
low66
°F
Thu
Sep 11
Mostly Sunny
91
°F
low69
°F
Fri
Sep 12
Mostly Sunny
89
°F
low65
°F
Sat
Sep 13
Mostly Sunny
89
°F
low70
°F
Sun
Sep 14
Mostly Cloudy , T-Storms
89
°F
low62
°F
Mon
Sep 15
Mostly Sunny
82
°F
low57
°F
Tue
Sep 16
Sunny
84
°F
low63
°F
Wed
Sep 17
Mostly Sunny
88
°F
low64
°F
ThuFriSat
Last updated 1h 35min 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.