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Inclement Weather in the Pacific Northwest; Heavy Rain and Thunderstorms in Southern Texas

A series of cold fronts will continue to bring periods of gusty winds, low elevation rainfall, and high elevation snow to the Pacific Northwest this week. Heavy to excessive rainfall may produce areas of flooding over southern Texas through Monday morning. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

46°F

8°C

Humidity 93%
Wind Speed Calm
Barometer 30.11 in (1019.8 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 8 Nov 8:53 pm CST
Extended Forecast for

Arnold MO

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 41. Light and variable wind.

    Low: 41 °F

    Clear then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 45. Light and variable wind becoming southwest around 5 mph in the evening.

    Low: 45 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 71. Southwest wind around 5 mph becoming calm in the morning.

    High: 71 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: A 30 percent chance of rain and thunderstorms after noon. Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 41. Light and variable wind.
Monday
Patchy fog before 9am. Otherwise, sunny, with a high near 69. Light and variable wind.
Monday Night
Clear, with a low around 45. Light and variable wind becoming southwest around 5 mph in the evening.
Tuesday
Sunny, with a high near 71. Southwest wind around 5 mph becoming calm in the morning.
Tuesday Night
Mostly clear, with a low around 47. Calm wind.
Veterans Day
A 30 percent chance of rain and thunderstorms after noon. Mostly sunny, with a high near 70.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 32.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arnold MO
 38.42°N 90.38°W (Elev. 495 ft)
Last Update:
8:51 pm CST Nov 8, 2026
Forecast Valid:
9pm CST Nov 8, 2026-6pm CST Nov 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation