10-Day Weather Forecast - O'Fallon, MO
Weekend Weather
- |71°F
ThunderstormsHourly detailsTonight
71°FShowers and thunderstorms mainly this evening. Lows in the lower 70s. West winds around 5 mph. Chance of rain near 100 percent.
- 84|71°F
Partly SunnyHourly detailsDay
84°FPartly sunny with a slight chance of showers and thunderstorms. Humid with highs in the upper 80s. Northwest winds 5 to 10 mph. Chance of rain 20 percent.
Night
71°F
Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent.
- 83|70°F
Mostly SunnyHourly detailsDay
83°FMostly sunny. Highs in the upper 80s. Northeast winds 5 to 10 mph.
Night
70°FPartly cloudy in the evening then becoming mostly clear. Lows in the upper 60s. Northeast winds 5 to 10 mph.
- 84|71°FMostly SunnyHourly details
Day
84°FMostly clear. Highs in the upper 80s. Lows in the upper 60s.
Night
71°F
Mostly clear. Highs in the upper 80s. Lows in the upper 60s.
- 89|74°F
SunnyHourly detailsDay
89°FSunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent.
Night
74°FMostly clear. Lows in the lower 70s.
- 90|75°FMostly SunnyHourly details
Day
90°FMostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100.
Night
75°FPartly cloudy with a chance of thunderstorms. A chance of showers in the evening then showers likely after midnight. Lows in the lower 70s. Chance of rain 60 percent. Heat index values up to 100 early in the evening.
- 86|73°F
50% Chance of StormsHourly detailsDay
86°FPartly sunny with a chance of showers. A slight chance of thunderstorms in the morning then a chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent.
Night
73°FPartly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 40 percent.
Weekend Weather
- 85|72°FMostly Sunny
Day
85°FMostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent.
Night
72°F
Clear with a chance of rain. Chance of precipitation 35%. Low temperature around 72F. Dew point will be around 71F with an average humidity of 85%. Winds will be 1 mph from the N.
- 85|70°FSunny
Day
85°FSunny. High temperature around 85F. Dew point will be around 72F with an average humidity of 75%. Winds will be 2 mph from the NW.
Night
70°F
Clear. Low temperature around 70F. Dew point will be around 69F with an average humidity of 84%. Winds will be 1 mph from the N.
- 84|69°FSunny
Day
84°FSunny. High temperature around 84F. Dew point will be around 69F with an average humidity of 72%. Winds will be 2 mph from the NE.
Night
69°FClear. Low temperature around 69F. Dew point will be around 67F with an average humidity of 81%. Winds will be 2 mph from the NE.
