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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Jefferson City, Jefferson City Memorial Airport (KJEF)

Lat: 38.59°NLon: 92.16°WElev: 548ft.

Fair

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 30.11 in (1018.1 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 23 Aug 4:53 am CDT
Extended Forecast for

Saint Martins MO

  • Today

    Today: Partly sunny, with a high near 82. Calm wind becoming north around 6 mph in the afternoon.

    High: 82 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 4am and 5am. Mostly cloudy, with a low around 64. Light and variable wind. Chance of precipitation is 20%.

    Low: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms between 8am and 10am. Mostly cloudy, then becoming sunny during the afternoon, with a high near 82. Southeast wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy during the early evening, then clearing, with a low around 67. East wind 3 to 6 mph.

    Low: 67 °F

    Clearing

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. Light east wind.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 82. Calm wind becoming north around 6 mph in the afternoon.
Tonight
A slight chance of showers and thunderstorms between 4am and 5am. Mostly cloudy, with a low around 64. Light and variable wind. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms between 8am and 10am. Mostly cloudy, then becoming sunny during the afternoon, with a high near 82. Southeast wind 3 to 7 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy during the early evening, then clearing, with a low around 67. East wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 87. Light east wind.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 66.
Friday
Mostly sunny, with a high near 86.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Martins MO
 38.6°N 92.33°W (Elev. 709 ft)
Last Update:
5:05 am CDT Aug 23, 2026
Forecast Valid:
5am CDT Aug 23, 2026-6pm CDT Aug 29, 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