Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
42°F
6°C
| Humidity | 76% |
| Wind Speed | S 3 mph |
| Barometer | 30.20 in (1022.7 mb) |
| Dewpoint | 35°F (2°C) |
| Visibility | 10.00 mi |
| Last update | 2 Nov 11:53 pm CST |
Extended Forecast for
Herculaneum MO
Tonight
Low: 37 °F
Patchy Frost
Monday
High: 65 °F
Areas Frost
then SunnyMonday Night
Low: 38 °F
Mostly Clear
Tuesday
High: 70 °F
Sunny
Tuesday Night
Low: 50 °F
Partly Cloudy
Wednesday
High: 73 °F
Sunny
Wednesday Night
Low: 40 °F
Clear
Thursday
High: 68 °F
Sunny
Thursday Night
Low: 53 °F
Partly Cloudy
then Chance
Showers
Detailed Forecast
Tonight
Patchy frost after 1am. Otherwise, clear, with a low around 37. South wind 3 to 5 mph.
Monday
Areas of frost before 7am. Otherwise, sunny, with a high near 65. Light and variable wind becoming west 5 to 8 mph.
Monday Night
Mostly clear, with a low around 38. Calm wind.
Tuesday
Sunny, with a high near 70. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 50. Southwest wind 6 to 9 mph.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Clear, with a low around 40.
Thursday
Sunny, with a high near 68.
Thursday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 53.
Friday
A 30 percent chance of showers and thunderstorms before noon. Mostly sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 44.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Mostly sunny, with a high near 57.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Herculaneum MO
38.27°N 90.39°W (Elev. 456 ft)
38.27°N 90.39°W (Elev. 456 ft)
9:16 pm CST Nov 2, 2025
11pm CST Nov 2, 2025-6pm CST Nov 9, 2025
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