10-Day Weather Forecast - O'Fallon, MO
- 77|63°FSunnyHourly details
Today
77°FSunny. Highs around 80. Southeast winds 5 to 10 mph.
Tonight
63°FPartly cloudy in the evening then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the lower 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.
- 79|53°F70% Chance of StormsHourly details
Day
79°FThunderstorms likely. Showers likely. Breezy with highs in the lower 80s. South winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 70 percent.
Night
53°FShowers and thunderstorms likely in the evening then mostly clear after midnight. Breezy with lows in the lower 50s. Southwest winds 20 to 25 mph with gusts up to 35 mph becoming west 5 to 10 mph with gusts up to 20 mph after midnight. Chance of rain 70 percent.
- 67|50°F40% Chance of StormsHourly details
Day
67°FSunny. A chance of showers and thunderstorms in the afternoon. Cooler with highs in the lower 70s. Northwest winds around 5 mph. Chance of rain 40 percent.
Night
50°FMostly cloudy with a chance of showers and thunderstorms in the evening then partly cloudy with a slight chance of showers after midnight. Lows around 50. Chance of rain 50 percent.
- 65|43°FMostly SunnyHourly details
Day
65°FMostly clear. Highs in the upper 60s. Lows in the mid 40s.
Night
43°FMostly clear. Highs in the upper 60s. Lows in the mid 40s.
- 68|50°FPartly CloudyHourly details
Day
68°FPartly cloudy. Highs in the upper 60s. Lows in the mid 40s.
Night
50°FPartly cloudy. Highs in the upper 60s. Lows in the mid 40s.
- 65|45°FPartly CloudyHourly details
Day
65°FPartly cloudy. Highs in the upper 60s. Lows in the mid 40s.
Night
45°FPartly cloudy. Highs in the upper 60s. Lows in the mid 40s.
Weekend Weather
- 65|46°FPartly Cloudy
Day
65°FPartly cloudy. Highs in the upper 60s. Lows in the mid 40s.
Night
46°FPartly cloudy. Low temperature around 46F. Dew point will be around 40F with an average humidity of 65%. Winds will be 3 mph from the N.
- 69|50°FSunny
Day
69°FSunny. High temperature around 69F. Dew point will be around 44F with an average humidity of 55%. Winds will be 2 mph from the NW.
Night
50°FClear. Low temperature around 50F. Dew point will be around 48F with an average humidity of 72%. Winds will be 2 mph from the SW.
- 68|52°F30% Chance of Rain
Day
68°FMostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 68F. Dew point will be around 48F with an average humidity of 61%. Winds will be 1 mph from the W.
Night
52°FPartly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 52F. Dew point will be around 50F with an average humidity of 74%. Winds will be 1 mph from the S.
- 68|53°F40% Chance of Rain
Day
68°FMostly cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 68F. Dew point will be around 49F with an average humidity of 62%. Winds will be 2 mph from the SW.
Night
53°FPartly cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 53F. Dew point will be around 52F with an average humidity of 78%. Winds will be 2 mph from the W.
