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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Jefferson City, Jefferson City Memorial Airport (KJEF)

Lat: 38.59°NLon: 92.16°WElev: 548ft.

Fair

75°F

24°C

Humidity 94%
Wind Speed E 3 mph
Barometer 30.20 in (1021.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 17 Sep 12:53 am CDT
Extended Forecast for

4 Miles ESE Saint Martins MO

Heat Advisory September 17, 01:25am until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 01:25am until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Overnight

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Heat index values as high as 105. South wind 5 to 7 mph becoming west in the afternoon.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. Light and variable wind.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 97. Heat index values as high as 101. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 97 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Light south wind.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers. Partly sunny, with a high near 90.

    High: 90 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 74. South wind around 5 mph.
Thursday
Sunny and hot, with a high near 97. Heat index values as high as 105. South wind 5 to 7 mph becoming west in the afternoon.
Thursday Night
Mostly clear, with a low around 73. Light and variable wind.
Friday
Sunny and hot, with a high near 97. Heat index values as high as 101. Calm wind becoming southwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 74. Light south wind.
Saturday
Mostly sunny and hot, with a high near 97.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 90.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 40%.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Saint Martins MO
 38.58°N 92.28°W (Elev. 699 ft)
Last Update:
10:46 pm CDT Sep 16, 2026
Forecast Valid:
1am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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