10-Day Weather Forecast - O'Fallon, MO
- |65°F60% Chance of RainHourly details
Tonight
65°FPartly cloudy with a 60% chance for rain and thunderstorms. Low temperature around 65F. Dew point will be around 62F with an average humidity of 81%. Winds will be 12 mph from the SW.
- 67|33°FThunderstormsHourly details
Day
67°FRain with thunderstorms likely this morning then rain likely this afternoon. Much cooler with highs in the mid 60s. Temperature falling into the upper 40s this afternoon. West winds 10 to 15 mph becoming northwest 15 to 20 mph this afternoon. Chance of rain near 100 percent.
Night
33°FMostly cloudy in the evening then clearing. Much cooler with lows in the lower 30s. Northwest winds 15 to 20 mph.
- 55|46°FSunnyHourly details
Day
55°FSunny. Highs in the mid 50s. West winds 5 to 10 mph.
Night
46°FPartly cloudy. Not as cool with lows in the mid 40s. South winds 15 to 20 mph with gusts up to 35 mph.
- 60|38°FPartly SunnyHourly details
Day
60°FPartly sunny. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 30 mph.
Night
38°FMostly cloudy. Lows in the upper 30s.
Weekend Weather
- 63|56°FMostly SunnyHourly details
Day
63°FMostly sunny. Highs in the mid 60s.
Night
56°FMostly cloudy. A slight chance of rain and thunderstorms after midnight. Not as cool with lows in the lower 50s. Chance of rain 20 percent.
- 66|30°F80% Chance of StormsHourly details
Day
66°FRain likely with a chance of thunderstorms in the morning then rain in the afternoon. Breezy with highs in the mid 60s. Chance of rain 80 percent.
Night
30°FMostly cloudy with a chance of rain and snow in the evening then partly cloudy after midnight. Breezy and much cooler with lows in the mid 20s. Chance of precipitation 30 percent.
- 33|21°FSunnyHourly details
Day
33°FSunny. Much cooler with highs in the upper 30s.
Night
21°FPartly cloudy in the evening then becoming mostly cloudy. Lows in the lower 20s.
- 43|34°FPartly Sunny
Day
43°FPartly sunny. Highs in the lower 40s.
Night
34°FCloudy. Low temperature around 34F. Dew point will be around 23F with an average humidity of 59%. Winds will be 6 mph from the S.
- 51|39°FCloudy
Day
51°FCloudy. High temperature around 51F. Dew point will be around 33F with an average humidity of 63%. Winds will be 5 mph from the S.
Night
39°FCloudy. Low temperature around 39F. Dew point will be around 33F with an average humidity of 68%. Winds will be 3 mph from the SE.
- 60|50°FCloudy
Day
60°FCloudy. High temperature around 60F. Dew point will be around 42F with an average humidity of 68%. Winds will be 8 mph from the S.
Night
50°FPartly cloudy. Low temperature around 50F. Dew point will be around 44F with an average humidity of 68%. Winds will be 6 mph from the S.
