National Weather Service Forecast for: St. Louis, MO
Issued by: National Weather Service St. Louis/St. Charles, MO
Updated: Tue, 25-Aug-2026 5:56pm CDT

Saint Louis
 
  Wednesday

Wednesday: Partly Sunny then Slight Chance Showers And Thunderstorms
Partly Sunny then Slight Chance Showers And T-Storms
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Sunny
Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Sunny
Sunny
Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Slight Chance Rain Showers
Slight Chance Rain Showers
  Hi 90 °F Hi 87 °F Hi 87 °F Hi 88 °F Hi 94 °F Hi 95 °F Hi 94 °F
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Partly Cloudy then Slight Chance Rain Showers
Partly Cloudy then Slight Chance Rain Showers
 
Lo 70 °F Lo 67 °F Lo 66 °F Lo 64 °F Lo 68 °F Lo 73 °F Lo 75 °F  

 

Tonight
 
Mostly cloudy, with a low around 70. Southeast wind 1 to 5 mph.
Wednesday
 
A slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 90. Southwest wind 1 to 6 mph. Chance of precipitation is 20%.
Wednesday Night
 
A chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 67. Northwest wind 1 to 6 mph. Chance of precipitation is 30%.
Thursday
 
Sunny, with a high near 87. North wind 2 to 7 mph.
Thursday Night
 
Mostly clear, with a low around 66. North wind 1 to 6 mph.
Friday
 
Sunny, with a high near 87.
Friday Night
 
Mostly clear, with a low around 64.
Saturday
 
Sunny, with a high near 88.
Saturday Night
 
Mostly clear, with a low around 68.
Sunday
 
Sunny, with a high near 94.
Sunday Night
 
Mostly clear, with a low around 73.
Monday
 
Mostly sunny, with a high near 95.
Monday Night
 
A slight chance of rain showers after 1am. Partly cloudy, with a low around 75. Chance of precipitation is 20%.
Tuesday
 
A slight chance of rain showers before 1pm. Mostly sunny, with a high near 94. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for St. Louis, MO.