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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

Athens McMinn County Airport (KMMI)

Lat: 35.4°NLon: 84.56°WElev: 874ft.

Fog/Mist

39°F

4°C

Humidity 100%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 39°F (4°C)
Visibility 5.00 mi
Last update 8 Dec 2:55 am EST
Extended Forecast for

Decatur TN

  • Overnight

    Overnight: A 50 percent chance of showers, mainly before 4am. Cloudy, with a low around 38. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 46. Light west wind becoming north 5 to 10 mph in the morning.

    High: 46 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25. North wind around 5 mph becoming calm.

    Low: 25 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 35. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 56. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29. West wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of showers, mainly before 4am. Cloudy, with a low around 38. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy, with a high near 46. Light west wind becoming north 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 25. North wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 49. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 35. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 56. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly cloudy, with a low around 29. West wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Mostly sunny, with a high near 50.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Sunny, with a high near 39.
Saturday Night
Mostly clear, with a low around 19.
Sunday
Sunny, with a high near 40.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur TN
 35.54°N 84.81°W (Elev. 682 ft)
Last Update:
12:31 am EST Dec 8, 2025
Forecast Valid:
3am EST Dec 8, 2025-6pm EST Dec 14, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation