Cold Temperatures for the Eastern U.S.; Lake Effect Snow in the Great Lakes; Heavy Rain in the Pacific Northwest

Cold temperatures will continue across much of the eastern U.S. into today. Heavy lake effect snow continues into today east of Lakes Erie and Ontario. Two Pacific cold fronts will cross the Pacific Northwest early this week followed by another atmospheric river. Heavy rain and gusty winds are expected through midweek, with the potential for renewed urban and river flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Plymouth (KC65)

Lat: 41.37°NLon: 86.3°WElev: 801ft.

A Few Clouds

19°F

-7°C

Humidity 63%
Wind Speed SW 9 G 16 mph
Barometer 30.09 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 15 Dec 6:15 pm EST
Extended Forecast for

Koontz Lake IN

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Southwest wind 5 to 10 mph.

    Low: 13 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 30. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37. West wind 5 to 10 mph becoming south in the afternoon.

    High: 37 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight.  Mostly cloudy, with a low around 29. South wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Rain.  High near 46. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 46 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain and snow before midnight.  Mostly cloudy, with a low around 17. Chance of precipitation is 40%.

    Low: 17 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Southwest wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 36. South wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 30. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 37. West wind 5 to 10 mph becoming south in the afternoon.
Wednesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 29. South wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Thursday
Rain. High near 46. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 26.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
A slight chance of rain and snow after noon. Partly sunny, with a high near 41. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 26.
Monday
Mostly cloudy, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
Koontz Lake IN
 41.41°N 86.48°W (Elev. 696 ft)
5:15 pm CST Dec 15, 2025
5pm CST Dec 15, 2025-6pm CST Dec 22, 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