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

Plymouth (KC65)

Lat: 41.37°NLon: 86.3°WElev: 801ft.

Fair

30°F

-1°C

Humidity 100%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 12 Jan 11:35 pm EST
Extended Forecast for

Koontz Lake IN

  • Tonight

    Tonight: Partly cloudy, with a low around 31. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Partly sunny, with a high near 45. Southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 45 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: A slight chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 33. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Snow, possibly mixed with rain, becoming all snow after 9am. High near 34. Northwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 34 °F

    Rain/Snow
    then Snow
    Likely

  • Wednesday Night

    Wednesday Night: Snow likely. Mostly cloudy, with a low around 18. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.

    Low: 18 °F

    Snow Likely

  • Thursday

    Thursday: A 30 percent chance of snow, mainly before noon. Partly sunny, with a high near 25.

    High: 25 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Slight Chance
    Snow then
    Chance Snow

  • Friday

    Friday: Snow likely. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.

    High: 31 °F

    Snow Likely

  • Friday Night

    Friday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 16. Chance of precipitation is 60%.

    Low: 16 °F

    Snow Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 31. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 45. Southwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
A slight chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 33. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday
Snow, possibly mixed with rain, becoming all snow after 9am. High near 34. Northwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 18. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.
Thursday
A 30 percent chance of snow, mainly before noon. Partly sunny, with a high near 25.
Thursday Night
A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 14.
Friday
Snow likely. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.
Friday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 16. Chance of precipitation is 60%.
Saturday
Snow likely, mainly after noon. Mostly cloudy, with a high near 22. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 6.
Sunday
A 30 percent chance of snow. Partly sunny and cold, with a high near 16.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 5.
M.L.King Day
A slight chance of snow. Partly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Koontz Lake IN
 41.41°N 86.48°W (Elev. 696 ft)
Last Update:
9:46 pm CST Jan 12, 2026
Forecast Valid:
10pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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