St Louis Airport (STL) Weather 06/22/2026
Today
95
Slight Chance Showers then Mostly Sunny
Tonight
65
T-storms then Slight Chance T-storms
Friday
84
Sunny
Friday Night
66
Mostly Clear
Saturday
86
Chance Showers then Chance T-storms
Saturday Night
68
Showers
Sunday
78
Slight Chance T-storms
Sunday Night
60
Partly Cloudy
Monday
79
Mostly Sunny
Monday Night
61
Partly Cloudy
Tuesday
82
Sunny then Slight Chance T-storms
Tuesday Night
62
Slight Chance T-storms
Wednesday
85
Mostly Sunny then Slight Chance T-storms
Weekly Forecast
Today
A 20 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 95. Heat index values as high as 101. Southwest wind 8 to 16 mph, with gusts as high as 30 mph.
Tonight
Showers and thunderstorms, mainly before midnight. Low around 65. Southwest wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday
Sunny, with a high near 84. Northwest wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 66. Light and variable wind.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind 6 to 9 mph.
Saturday Night
Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 90%.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.