National Weather Service Forecast for: St. Louis, MO
Issued by: National Weather Service St. Louis/St. Charles, MO
Updated: Sun, 13-Sep-2026 1:51am CDT

Saint Louis
 
  Sunday

Sunday: Partly Sunny
Partly Sunny
Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

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

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

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

Friday: Slight Chance Rain Showers
Slight Chance Rain Showers
Saturday

Saturday: Chance Rain Showers
Chance Rain Showers
  Hi 88 °F Hi 89 °F Hi 98 °F Hi 95 °F Hi 95 °F Hi 90 °F Hi 85 °F
 
Overnight

Overnight: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Mostly Cloudy
Mostly Cloudy
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Friday
Night
Friday Night: Chance Rain Showers
Chance Rain Showers
 
Lo 71 °F Lo 66 °F Lo 74 °F Lo 74 °F Lo 76 °F Lo 72 °F Lo 67 °F  

 

Overnight
 
Partly cloudy, with a low around 71. North wind around 2 mph.
Sunday
 
Partly sunny. High near 88, with temperatures falling to around 83 in the afternoon. North wind 2 to 6 mph.
Sunday Night
 
Mostly cloudy, with a low around 66. Northeast wind around 7 mph.
Monday
 
Mostly sunny, with a high near 89. East wind 7 to 10 mph.
Monday Night
 
Mostly clear, with a low around 74. Southeast wind 6 to 10 mph.
Tuesday
 
A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 98. Chance of precipitation is 20%.
Tuesday Night
 
A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Wednesday
 
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. Chance of precipitation is 20%.
Wednesday Night
 
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 76. Chance of precipitation is 20%.
Thursday
 
A slight chance of rain showers between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 95. Chance of precipitation is 20%.
Thursday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
 
A slight chance of rain showers. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
Friday Night
 
A chance of rain showers. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Saturday
 
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

 

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