St Louis Airport (STL) Weather 08/02/2026
Tonight
68
Mostly Cloudy
Friday
78
Scattered Showers
Friday Night
68
Scattered Showers
Saturday
88
Chance Showers then Slight Chance Showers
Saturday Night
74
Partly Cloudy
Sunday
94
Mostly Sunny
Sunday Night
77
Mostly Clear
Monday
99
Hot
Monday Night
78
Mostly Clear
Tuesday
95
Sunny
Tuesday Night
75
Partly Cloudy
Wednesday
92
Slight Chance Showers
Wednesday Night
73
Partly Cloudy
Weekly Forecast
Tonight
Mostly cloudy, with a low around 68. East wind 5 to 7 mph becoming calm after midnight.
Friday
Scattered showers, mainly after 8am. Mostly cloudy, with a high near 78. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 40%.
Friday Night
Scattered showers. Mostly cloudy, with a low around 68. Southeast wind around 7 mph. Chance of precipitation is 50%.
Saturday
A 50 percent chance of showers, mainly before 10am. Partly sunny, with a high near 88. South wind around 6 mph becoming west in the afternoon.
Saturday Night
Partly cloudy, with a low around 74. Northeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 77.
Monday
Sunny and hot, with a high near 99.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Partly cloudy, with a low around 75.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 92.
Wednesday Night
Partly cloudy, with a low around 73.