National Weather Service Forecast for: St. Louis, MO
Issued by: National Weather Service St. Louis/St. Charles, MO
Updated: Wed, 09-Sep-2026 10:36pm CDT

Saint Louis
 
  Thursday

Thursday: Showers And Thunderstorms then Chance Showers And Thunderstorms
Showers And T-Storms then Chance Showers And T-Storms
Friday

Friday: Partly Sunny
Partly Sunny
Saturday

Saturday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms
Sunday

Sunday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday

Wednesday: Chance Rain Showers
Chance Rain Showers
  Hi 81 °F Hi 84 °F Hi 90 °F Hi 91 °F Hi 94 °F Hi 91 °F Hi 90 °F
 
Tonight

Tonight: Showers And Thunderstorms
Showers And T-Storms
Thursday
Night
Thursday Night: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday
Night
Monday Night: Mostly Clear then Slight Chance Showers And Thunderstorms
Mostly Clear then Slight Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 73 °F Lo 69 °F Lo 69 °F Lo 71 °F Lo 72 °F Lo 73 °F Lo 70 °F  

 

Tonight
 
Showers and thunderstorms before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers and thunderstorms likely. Mostly cloudy, with a low around 73. Northeast wind around 2 mph. Chance of precipitation is 90%.
Thursday
 
Showers and thunderstorms before 11am, then a chance of showers and thunderstorms between 11am and 3pm. Mostly cloudy, with a high near 81. North wind around 5 mph. Chance of precipitation is 90%.
Thursday Night
 
Mostly cloudy, with a low around 69. Northeast wind 1 to 5 mph.
Friday
 
Partly sunny, with a high near 84. East wind around 3 mph.
Friday Night
 
Partly cloudy, with a low around 69. Southeast wind around 2 mph.
Saturday
 
A slight chance of rain showers between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
Saturday Night
 
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Sunday
 
A slight chance of rain showers before 7am. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Sunday Night
 
Partly cloudy, with a low around 72.
Monday
 
Sunny, with a high near 94.
Monday Night
 
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. Chance of precipitation is 20%.
Tuesday
 
A chance of showers and thunderstorms. Sunny, with a high near 91. Chance of precipitation is 30%.
Tuesday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 40%.
Wednesday
 
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.

 

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