Heavy rain for portions of the Mid-Atlantic and New England through Saturday

A slow-moving weather system in the eastern U.S. will focus showers and thunderstorms across portions of New England and the Mid-Atlantic through Saturday. Abundant moisture will allow occasionally heavy rainfall and flash flooding in these locations. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

77°F

25°C

Humidity 82%
Wind Speed Calm
Barometer 29.93 in (1013.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 29 Jul 9:53 pm CDT
Extended Forecast for

Herculaneum MO

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm.  Patchy fog after 2am.  Otherwise, partly cloudy, with a low around 66. North wind around 5 mph becoming calm  in the evening.

    Slight Chance
    T-storms then
    Patchy Fog

    Low: 66 °F

  • Saturday

    Saturday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 87. Calm wind becoming west around 6 mph in the morning.

    Patchy Fog
    then Mostly
    Sunny

    High: 87 °F

  • Saturday
    Night

    Saturday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 68. North wind around 5 mph becoming calm  in the evening.

    Slight Chance
    T-storms

    Low: 68 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 88. Light and variable wind.

    Chance
    T-storms

    High: 88 °F

  • Sunday
    Night

    Sunday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm  in the evening.

    Chance
    T-storms

    Low: 70 °F

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 88.

    Chance
    T-storms

    High: 88 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 73.

    Chance
    T-storms

    Low: 73 °F

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 90.

    Chance
    T-storms

    High: 90 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 73.

    Partly Cloudy

    Low: 73 °F

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 66. North wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming west around 6 mph in the morning.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. North wind around 5 mph becoming calm in the evening.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Light and variable wind.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm in the evening.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Thursday Night
Partly cloudy, with a low around 74.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Click Map For Forecast
Point Forecast:
Herculaneum MO
 38.27°N 90.39°W (Elev. 456 ft)
8:29 pm CDT Jul 29, 2016
10pm CDT Jul 29, 2016-6pm CDT Aug 5, 2016
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database