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.

Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 68°F (20°C)
Visibility 1.25 mi
Last update 7 Aug 8:55 am EDT
Extended Forecast for

Koontz Lake IN

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. South wind around 5 mph.

    High: 81 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 68. Southwest wind around 5 mph.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 81. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 81 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. North wind around 5 mph becoming calm.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 83. South wind 5 to 10 mph. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 85.

    High: 85 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.

    Low: 69 °F

    T-storms
    Likely

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.

    High: 81 °F

    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. South wind around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 68. Southwest wind around 5 mph.
Saturday
A 20 percent chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 81. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 61. North wind around 5 mph becoming calm.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 83. South wind 5 to 10 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 85.
Monday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Thursday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Koontz Lake IN
 41.41°N 86.48°W (Elev. 696 ft)
Last Update:
7:01 am CDT Aug 7, 2026
Forecast Valid:
8am CDT Aug 7, 2026-6pm CDT Aug 13, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation