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

Hazardous Weather Conditions

Current conditions at

Washington Regional Airport (KFYG)

Lat: 38.59°NLon: 90.99°WElev: 489ft.

Fair

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.84 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 10 Mar 3:55 am CDT
Extended Forecast for

Marthasville MO

  • Today

    Today: Sunny, with a high near 85. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 51. South wind 11 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.

    Low: 51 °F

    Slight Chance
    T-storms then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then a chance of showers. Temperature falling to around 50 by 5pm. Southwest wind 10 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.

    High: 62 °F⇓

    T-storms then
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. Northwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 24 mph.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 57. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 85. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 51. South wind 11 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm before 1pm, then a chance of showers. Temperature falling to around 50 by 5pm. Southwest wind 10 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.
Wednesday Night
Partly cloudy, with a low around 32. Northwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 24 mph.
Thursday
Sunny, with a high near 57. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Partly sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
A 20 percent chance of rain after 1am. Partly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 62. Breezy. Chance of precipitation is 70%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marthasville MO
 38.62°N 91.03°W (Elev. 499 ft)
Last Update:
3:46 am CDT Mar 10, 2026
Forecast Valid:
4am CDT Mar 10, 2026-6pm CDT Mar 16, 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