National Weather Service Forecast for: University City MO
Issued by: National Weather Service Saint Louis, MO
Updated: 5:56 pm CDT Jul 25, 2025
 
Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 78. South wind around 6 mph.
Slight Chance
T-storms then
Partly Cloudy
 Saturday

Saturday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 103. South wind 6 to 8 mph.
Mostly Sunny
then Slight
Chance
T-storms
 Saturday
Night
Saturday Night: A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 80. South wind 5 to 8 mph.
Slight Chance
T-storms then
Partly Cloudy
 Sunday

Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Heat index values as high as 105. Southwest wind around 6 mph.
Slight Chance
T-storms

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 81. South wind 3 to 5 mph.
Partly Cloudy

 Monday

Monday: Sunny and hot, with a high near 99.
Hot

 Monday
Night
Monday Night: Mostly clear, with a low around 80.
Mostly Clear

 Tuesday

Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100.
Sunny then
Slight Chance
T-storms
 Tuesday
Night
Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80.
Slight Chance
T-storms
Lo 78 °F Hi 94 °F Lo 80 °F Hi 95 °F Lo 81 °F Hi 99 °F Lo 80 °F Hi 100 °F Lo 80 °F

Extreme Heat Warning
Hazardous Weather Outlook
 

Tonight
 
 A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 78. South wind around 6 mph.
Saturday
 
 A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 103. South wind 6 to 8 mph.
Saturday Night
 
 A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 80. South wind 5 to 8 mph.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Heat index values as high as 105. Southwest wind around 6 mph.
Sunday Night
 
 Partly cloudy, with a low around 81. South wind 3 to 5 mph.
Monday
 
 Sunny and hot, with a high near 99.
Monday Night
 
 Mostly clear, with a low around 80.
Tuesday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80.
Wednesday
 
 A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Thursday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Thursday Night
 
 A 20 percent chance of showers. Mostly cloudy, with a low around 66.
Friday
 
 Mostly sunny, with a high near 83.

 

Forecast from NOAA-NWS for University City MO.