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Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Mostly Cloudy and Breezy
36°F
2°C
| Humidity | 46% |
| Wind Speed | NW 23 G 37 mph |
| Barometer | 30.02 in (1016.9 mb) |
| Dewpoint | 17°F (-8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 24°F (-4°C) |
| Last update | 14 Jan 3:53 pm CST |
Extended Forecast for
Herculaneum MO
Tonight

Low: 16 °F
Clear
Thursday

High: 36 °F
Sunny
Thursday Night

Low: 28 °F
Chance
Rain/SnowFriday

High: 46 °F
Partly Sunny
Friday Night
Low: 19 °F
Chance
Sprinkles/Flurries
then Slight
Chance Snow
ShowersSaturday

High: 28 °F
Partly Sunny
Saturday Night

Low: 7 °F
Partly Cloudy
Sunday

High: 27 °F
Mostly Sunny
Sunday Night

Low: 14 °F
Partly Cloudy
Detailed Forecast
Tonight
Clear, with a low around 16. Northwest wind 5 to 10 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 36. Northwest wind around 5 mph becoming light and variable in the afternoon.
Thursday Night
A chance of snow before 11pm, then a chance of rain between 11pm and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 28. Light and variable wind becoming south around 6 mph in the evening. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 46. West wind 6 to 11 mph, with gusts as high as 25 mph.
Friday Night
A chance of sprinkles before 8pm, then a chance of flurries between 8pm and midnight, then a slight chance of snow showers after midnight. Mostly cloudy, with a low around 19. West wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 28.
Saturday Night
Partly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 27.
Sunday Night
Partly cloudy, with a low around 14.
M.L.King Day
Mostly sunny, with a high near 29.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 20.
Wednesday
Sunny, with a high near 45.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Herculaneum MO
38.25°N 90.39°W (Elev. 499 ft)
38.25°N 90.39°W (Elev. 499 ft)
4:51 pm CST Jan 14, 2026
4pm CST Jan 14, 2026-6pm CST Jan 21, 2026


