Today's Weather in O'Fallon

Mon 15th, Dec

6°C 44°F
Feels like: 3°C 37°F
Sunny
Southwest
18km/h 11mph / SW
Gust: 26 km/h
Gust: 26 mph

  • Rain: 0 mm
  • Sun: 180 mins
  • Cloud: %
  • RH: 32.3%
  • Pressure: 0 mb
  • Visibility: 24135 m
Sunrise: 07:14
Sunset: 16:42

O'Fallon 24hr weather forecast

21:00 00:00 03:00 06:00 09:00 12:00 15:00 18:00
Sunny
6°C
11 mph
Clear sky night
1°C
7 mph
Clear sky night
-1°C
9 mph
Partly cloudy night
-2°C
9 mph
Clear sky night
-2°C
7 mph
Clear sky night
-2°C
7 mph
Sunny
2°C
11 mph
Sunny
10°C
14 mph
15 day O'Fallon forecast »

the weather forecast for tomorrow

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What's the weather supposed to be like today?!

O'Fallon average weather Monday 15th December 2025 03:17 PM
Max temp: 5.2°C 41.4°F
Min temp: -4.6°C 23.7°F
Rainfall: 2mm 0.1ins

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