St Louis Airport (STL) Weather 09/23/2025
Tonight
67
Slight Chance T-storms then Slight Chance Showers
Saturday
86
Mostly Sunny then Slight Chance T-storms
Saturday Night
68
Slight Chance T-storms then Showers Likely
Sunday
85
Showers Likely
Sunday Night
69
Showers Likely
Monday
81
Showers Likely
Monday Night
68
Chance T-storms
Tuesday
79
Showers Likely
Tuesday Night
68
Chance Showers
Wednesday
78
Chance Showers then Chance T-storms
Wednesday Night
64
Chance Showers
Thursday
75
Chance Showers
Thursday Night
61
Chance Showers
Weekly Forecast
Tonight
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 86. Light and variable wind becoming southwest around 6 mph in the morning.
Saturday Night
A slight chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Increasing clouds, with a low around 68. South wind 3 to 6 mph. Chance of precipitation is 70%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. Southwest wind 5 to 8 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. South wind around 6 mph. Chance of precipitation is 70%.
Monday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.