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.

Overcast

39°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 7 Dec 7:55 pm EST
Extended Forecast for

Decatur TN

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 3am.  Cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Cloudy then
    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 48. Calm wind becoming north around 5 mph in the morning.

    High: 48 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. North wind around 5 mph becoming calm.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 50 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 35. South wind around 5 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 20 mph.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Southwest wind around 5 mph becoming calm  in the evening.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm.  Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of rain.  Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance Rain

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly before 3am. Cloudy, with a low around 38. Calm wind.
Monday
Mostly cloudy, with a high near 48. Calm wind becoming north around 5 mph in the morning.
Monday Night
Partly cloudy, with a low around 26. North wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 50. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 35. South wind around 5 mph.
Wednesday
Partly sunny, with a high near 56. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 33. Southwest wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 50.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
A slight chance of rain and snow before 8am, then a slight chance of rain between 8am and 1pm. Partly sunny, with a high near 46. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 18.
Saturday
Sunny, with a high near 35.
Saturday Night
Mostly clear, with a low around 16.
Sunday
Sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur TN
 35.54°N 84.81°W (Elev. 682 ft)
6:06 pm EST Dec 7, 2025
8pm EST Dec 7, 2025-6pm EST Dec 14, 2025
 
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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