National Weather Service Forecast for: 2 Miles NNE O'Fallon MO
Issued by: National Weather Service Saint Louis, MO
Updated: 5:22 pm CDT Jun 7, 2025
 
Tonight

Tonight: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and midnight.  Mostly cloudy, with a low around 61. East wind around 5 mph becoming light and variable.  Chance of precipitation is 70%.
Showers
Likely then
Mostly Cloudy
Sunday

Sunday: Mostly sunny, with a high near 84. West wind 5 to 7 mph.
Mostly Sunny

Sunday
Night
Sunday Night: A 50 percent chance of showers and thunderstorms, mainly before midnight.  Cloudy, then gradually becoming partly cloudy, with a low around 58. Northwest wind 5 to 8 mph.
Chance
T-storms then
Slight Chance
T-storms
Monday

Monday: Sunny, with a high near 81. West wind 5 to 10 mph, with gusts as high as 21 mph.
Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 57. West wind 5 to 7 mph becoming calm  in the evening.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 81.
Sunny

Tuesday
Night
Tuesday Night: Clear, with a low around 61.
Clear

Wednesday

Wednesday: Sunny, with a high near 87.
Sunny

Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 67.
Mostly Cloudy

Lo 61 °F Hi 84 °F Lo 58 °F Hi 81 °F Lo 57 °F Hi 81 °F Lo 61 °F Hi 87 °F Lo 67 °F

Hazardous Weather Outlook
 

Tonight
 
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and midnight. Mostly cloudy, with a low around 61. East wind around 5 mph becoming light and variable. Chance of precipitation is 70%.
Sunday
 
Mostly sunny, with a high near 84. West wind 5 to 7 mph.
Sunday Night
 
A 50 percent chance of showers and thunderstorms, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 58. Northwest wind 5 to 8 mph.
Monday
 
Sunny, with a high near 81. West wind 5 to 10 mph, with gusts as high as 21 mph.
Monday Night
 
Mostly clear, with a low around 57. West wind 5 to 7 mph becoming calm in the evening.
Tuesday
 
Sunny, with a high near 81.
Tuesday Night
 
Clear, with a low around 61.
Wednesday
 
Sunny, with a high near 87.
Wednesday Night
 
Mostly cloudy, with a low around 67.
Thursday
 
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 85. Chance of precipitation is 30%.
Thursday Night
 
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Friday
 
Showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Friday Night
 
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Saturday
 
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.

 

Forecast from NOAA-NWS for 2 Miles NNE O'Fallon MO.