National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

62°F

17°C

Humidity 90%
Wind Speed N 13 mph
Barometer 29.75 in (1007.0 mb)
Dewpoint 59°F (15°C)
Visibility 7.00 mi
Last update 15 May 3:53 am CDT
Extended Forecast for

Herculaneum MO

  • Today

    Today: Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 75. North wind 7 to 9 mph.

    High: 75 °F

    Patchy Fog
    then Partly
    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Partly cloudy, with a low around 58. North wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Mostly cloudy, with a high near 76. South wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 76 °F

    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm after 10pm. Mostly cloudy, with a low around 61. Southwest wind 5 to 7 mph becoming south in the evening. Chance of precipitation is 70%.

    Low: 61 °F

    T-storms
    Likely then
    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 73. South wind 5 to 9 mph. Chance of precipitation is 80%.

    High: 73 °F

    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.

    High: 82 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 75. North wind 7 to 9 mph.
Tonight
A 20 percent chance of showers after 4am. Partly cloudy, with a low around 58. North wind around 5 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Mostly cloudy, with a high near 76. South wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm after 10pm. Mostly cloudy, with a low around 61. Southwest wind 5 to 7 mph becoming south in the evening. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. High near 73. South wind 5 to 9 mph. Chance of precipitation is 80%.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 85.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 62.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Herculaneum MO
 38.27°N 90.39°W (Elev. 456 ft)
Last Update:
2:52 am CDT May 15, 2024
Forecast Valid:
4am CDT May 15, 2024-6pm CDT May 21, 2024
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation