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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Athens McMinn County Airport (KMMI)

Lat: 35.4°NLon: 84.56°WElev: 874ft.

A Few Clouds

57°F

14°C

Humidity 67%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 Mar 4:35 am EDT
Extended Forecast for

Decatur TNSimilar City Names

  • Today

    Today: A 10 percent chance of showers and thunderstorms after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 57. Southwest wind around 5 mph becoming calm.

    Low: 57 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. Southwest wind around 5 mph.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 71. North wind 5 to 10 mph.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 69. Northeast wind around 5 mph becoming calm.

    High: 69 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 66.

    High: 66 °F

    Chance
    Showers

Detailed Forecast

Today
A 10 percent chance of showers and thunderstorms after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 57. Southwest wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 85. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 58. Southwest wind around 5 mph.
Monday
Mostly sunny, with a high near 71. North wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 43. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 69. Northeast wind around 5 mph becoming calm.
Tuesday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 46.
Wednesday
A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 66.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 49.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 80.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 55.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur TNSimilar City Names
 35.52°N 84.79°W (Elev. 778 ft)
Last Update:
2:26 am EDT Mar 21, 2026
Forecast Valid:
4am EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation