National Weather Service Forecast for: St. Louis, MO
Issued by: National Weather Service St. Louis/St. Charles, MO
Updated: Thu, 02-Jul-2026 6:01am CDT

Saint Louis
 
Today

Today: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms
Friday

Friday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms
Independence
Day
Independence Day: Slight Chance Rain Showers then Chance Showers And Thunderstorms
Slight Chance Rain Showers then Chance Showers And T-Storms
Sunday

Sunday: Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Chance Showers And T-Storms then Slight Chance Showers And T-Storms
Monday

Monday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Tuesday

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

Wednesday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
 
Hi 96 °F Hi 97 °F Hi 96 °F Hi 94 °F Hi 92 °F Hi 91 °F Hi 92 °F  
 
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Friday
Night
Friday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday
Night
Sunday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
 
Lo 79 °F Lo 77 °F Lo 76 °F Lo 74 °F Lo 74 °F Lo 73 °F Lo 74 °F  

Extreme Heat Warning issued July 2 at 3:21AM CDT until July 3 at 10:00PM CDT
 

Today
 
A slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 96. Heat index values as high as 109. South wind 2 to 7 mph. Chance of precipitation is 20%.
Tonight
 
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 79. Heat index values as high as 105. South wind 1 to 8 mph. Chance of precipitation is 20%.
Friday
 
A slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 97. Heat index values as high as 109. South wind 1 to 7 mph. Chance of precipitation is 20%.
Friday Night
 
A slight chance of showers and thunderstorms. Mostly clear, with a low around 77. Heat index values as high as 106. South wind 2 to 7 mph. Chance of precipitation is 20%.
Independence Day
 
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny. High near 96, with temperatures falling to around 92 in the afternoon. Southwest wind around 5 mph. Chance of precipitation is 40%.
Saturday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 40%.
Sunday
 
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
Sunday Night
 
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. Chance of precipitation is 20%.
Monday
 
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Monday Night
 
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Tuesday
 
A chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Tuesday Night
 
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. Chance of precipitation is 40%.
Wednesday
 
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
Wednesday Night
 
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 20%.

 

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