Weather in O Fallon in the Summer
day
+88
evening
+88
Average daytime temperature in O Fallon in Summer is +88°F, while evening temperature falls to +88°F.
- Wind
- average wind speed 4 mph
- Pressure
- 746 inHg
Average Summer temperature graph in O Fallon, broken down by month and year, according to our weather archive.
Minimum and maximum
world's temperature today
world's temperature today
Russia
Batagay-Alyta
Batagay-Alyta
- day
- +28°F
- night
- +7°F
Sudan
Al Manāqil
Al Manāqil
- day
- +117°F
- night
- +90°F
O Fallon
The hottest months:
- July
- +93 °F
- August
- +88 °F
- June
- +86 °F
The coldest months:
- January
- +36 °F
- December
- +41 °F
- February
- +43 °F
Most precipitations:
- January
- 5 D
- December
- 5 D
- March
- 3 D
Most windy months mph:
- February
- 13.4 mph
- March
- 13.4 mph
- May
- 13.4 mph
Most sunny months days:
- November
- 9 D
- August
- 8 D
- October
- 8 D
Temperature units
°F°C
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