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

Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Hazardous Weather Conditions

Current conditions at

Farmington Airport (KFAM)

Lat: 37.77°NLon: 90.43°WElev: 945ft.

Fair

94°F

34°C

Humidity 56%
Wind Speed Vrbl 6 mph
Barometer 29.95 in (1013.8 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 13 Aug 1:56 pm CDT
Extended Forecast for

3 Miles SSE Potosi MO

Extreme Heat Warning August 13, 02:36pm until August 15, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 13, 02:36pm until August 15, 09:00pm

    NOW until 9:00pm Sat

    Extreme Heat Warning

  • This Afternoon

    High: 97 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 76. South wind 3 to 6 mph.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and hot, with a high near 99. Heat index values as high as 107. South wind around 6 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. Calm wind becoming south around 5 mph after midnight.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Southwest wind around 6 mph.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 97. Heat index values as high as 107. South wind around 6 mph.
Tonight
Mostly clear, with a low around 76. South wind 3 to 6 mph.
Friday
Mostly sunny and hot, with a high near 99. Heat index values as high as 107. South wind around 6 mph.
Friday Night
Mostly clear, with a low around 76. Calm wind becoming south around 5 mph after midnight.
Saturday
Sunny and hot, with a high near 99. Southwest wind around 6 mph.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Sunny and hot, with a high near 98.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Potosi MO
 37.9°N 90.74°W (Elev. 1099 ft)
Last Update:
1:41 pm CDT Aug 13, 2026
Forecast Valid:
2pm CDT Aug 13, 2026-6pm CDT Aug 19, 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