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Severe Thunderstorms over the Plains, Heavy Rain Threat Continues over Portions of the Mississippi Valley

Heavy rainfall with localized flooding will remain possible over portions of the Mississippi Valley and the Plains through midweek. In addition, severe thunderstorms will be possible over the southern and central Plains. Some of the storms could contain damaging winds and large hail. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Partly Cloudy

70°F

21°C

Humidity 90%
Wind Speed SW 5 mph
Barometer 29.90 in (1012.1 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 17 Aug 6:53 am CDT
Extended Forecast for

Arnold MO

  • Today

    Today: A 20 percent chance of showers before 10am.  Cloudy through mid morning, then gradual clearing, with a high near 89. West wind 7 to 13 mph, with gusts as high as 20 mph.

    Slight Chance
    Showers then
    Mostly Sunny

    High: 89 °F

  • Tonight

    Tonight: Clear, with a low around 66. West wind 5 to 8 mph.

    Clear

    Low: 66 °F

  • Friday

    Friday: Sunny, with a high near 90. West wind 3 to 5 mph.

    Sunny

    High: 90 °F

  • Friday
    Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 68. Light south wind.

    Partly Cloudy
    then Chance
    T-storms

    Low: 68 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon.

    Mostly Sunny

    High: 90 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 68.

    Mostly Clear

    Low: 68 °F

  • Sunday

    Sunday: Sunny, with a high near 92.

    Sunny

    High: 92 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 71.

    Mostly Clear

    Low: 71 °F

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 92.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 92 °F

Detailed Forecast

Today
A 20 percent chance of showers before 10am. Cloudy through mid morning, then gradual clearing, with a high near 89. West wind 7 to 13 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 66. West wind 5 to 8 mph.
Friday
Sunny, with a high near 90. West wind 3 to 5 mph.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. Light south wind.
Saturday
Mostly sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 68.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 71.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Arnold MO
 38.45°N 90.38°W (Elev. 499 ft)
6:28 am CDT Aug 17, 2017
7am CDT Aug 17, 2017-6pm CDT Aug 23, 2017
 
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