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

Putnam County Regional Airport (KGPC)

Lat: 39.64°NLon: 86.82°WElev: 827ft.

Partly Cloudy

22°F

-6°C

Humidity 45%
Wind Speed S 9 mph
Barometer 30.33 in
Dewpoint 4°F (-16°C)
Visibility NA
Wind Chill12°F (-11°C)
Last update 20 Jan 6:35 pm EST
Extended Forecast for

Greencastle IN

  • Tonight

    Tonight: Mostly cloudy, with a temperature falling to near 22 by 11pm, then rising to around 27 during the remainder of the night. South wind 9 to 13 mph, with gusts as high as 26 mph.

    Low: 22 °F⇑

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow before 10am. Partly sunny, with a high near 40. West southwest wind 15 to 17 mph, with gusts as high as 32 mph.

    High: 40 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 21. West southwest wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 21 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 31. West northwest wind around 8 mph.

    High: 31 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 8. Northwest wind 3 to 8 mph.

    Low: 8 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 11. North northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 11 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 1. North wind around 8 mph.

    Low: 1 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after 1pm. Cloudy and cold, with a high near 13. East northeast wind around 9 mph.

    High: 13 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 8. Northeast wind around 7 mph.

    Low: 8 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a temperature falling to near 22 by 11pm, then rising to around 27 during the remainder of the night. South wind 9 to 13 mph, with gusts as high as 26 mph.
Wednesday
A 20 percent chance of snow before 10am. Partly sunny, with a high near 40. West southwest wind 15 to 17 mph, with gusts as high as 32 mph.
Wednesday Night
Increasing clouds, with a low around 21. West southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Thursday
Partly sunny, with a high near 31. West northwest wind around 8 mph.
Thursday Night
Mostly cloudy, with a low around 8. Northwest wind 3 to 8 mph.
Friday
Partly sunny and cold, with a high near 11. North northwest wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 1. North wind around 8 mph.
Saturday
A 30 percent chance of snow, mainly after 1pm. Cloudy and cold, with a high near 13. East northeast wind around 9 mph.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 8. Northeast wind around 7 mph.
Sunday
A 20 percent chance of snow before 1pm. Partly sunny, with a high near 19. North wind around 6 mph.
Sunday Night
Mostly cloudy, with a low around 5.
Monday
Mostly sunny, with a high near 20.
Monday Night
Partly cloudy, with a low around 7.
Tuesday
Mostly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Greencastle IN
 39.65°N 86.86°W (Elev. 850 ft)
Last Update:
8:46 pm EST Jan 20, 2026
Forecast Valid:
9pm EST Jan 20, 2026-6pm EST Jan 27, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation