St Louis Airport (STL) Weather 12/15/2025
This Afternoon
25
Snow
Tonight
20
Snow then Cloudy
Tuesday
28
Partly Sunny
Tuesday Night
23
Partly Cloudy
Wednesday
38
Partly Sunny
Wednesday Night
13
Mostly Cloudy
Thursday
20
Cold
Thursday Night
12
Partly Cloudy
Friday
38
Slight Chance Snow then Mostly Sunny
Friday Night
27
Partly Cloudy
Saturday
39
Partly Sunny
Saturday Night
27
Mostly Cloudy
Sunday
35
Mostly Cloudy
Weekly Forecast
This Afternoon
Snow. High near 25. Calm wind. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow, mainly before 11pm. Low around 20. Calm wind becoming northwest 5 to 7 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Partly sunny, with a high near 28. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Tuesday Night
Partly cloudy, with a low around 23. South wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 38. South wind around 6 mph becoming northwest in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 13.
Thursday
Mostly sunny and cold, with a high near 20.
Thursday Night
Partly cloudy, with a low around 12.
Friday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 38.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 39.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Mostly cloudy, with a high near 35.