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

Excessive Rainfall and Severe Thunderstorms Threaten the Southern U.S. Again Thursday

A Moderate Risk (Level 3 of 4) Excessive Rainfall Outlook and Flood Watches have been issued for portions of east Texas into Louisiana Thursday where flash, urban, and riverine flooding is possible. A Slight Risk (Level 2 of 5) for scattered severe thunderstorms has been issued from west Texas to the lower Mississippi Valley Thursday afternoon into Thursday night. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

66°F

19°C

Humidity 96%
Wind Speed SE 3 mph
Barometer 29.78 in (1008.3 mb)
Dewpoint 65°F (18°C)
Visibility 9.00 mi
Last update 17 May 1:53 am CDT
Extended Forecast for

Arnold MO

  • Overnight

    Overnight: Mostly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 10am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 75. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    T-storms and
    Patchy Fog

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 9pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 61. Light southeast wind.

    Low: 61 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 84. Light and variable wind. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    T-storms and
    Patchy Fog

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 61. Calm wind.
Friday
A chance of showers, with thunderstorms also possible after 10am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 75. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 40%.
Friday Night
A 20 percent chance of showers and thunderstorms before 9pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 61. Light southeast wind.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 84. Light and variable wind. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 62. Calm wind.
Sunday
Sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 81.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 59.
Thursday
Mostly sunny, with a high near 84.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Arnold MO
 38.42°N 90.38°W (Elev. 495 ft)
Last Update:
1:38 am CDT May 17, 2024
Forecast Valid:
2am CDT May 17, 2024-6pm CDT May 23, 2024
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation