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.

Fair

50°F

10°C

Humidity 83%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 21 Mar 4:35 am EDT
Extended Forecast for

Greencastle IN

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 77. Light and variable wind becoming east southeast 5 to 7 mph in the morning.

    High: 77 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. South southwest wind 7 to 9 mph.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 79. South southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 79 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 35. North wind 13 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 35 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 51. North wind around 10 mph, with gusts as high as 18 mph.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. North northeast wind around 6 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. East southeast wind around 6 mph.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 2am. Mostly cloudy, with a low around 41. South wind 3 to 5 mph.

    Low: 41 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 2pm. Mostly cloudy, with a high near 60. East southeast wind 6 to 8 mph.

    High: 60 °F

    Slight Chance
    Rain

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 77. Light and variable wind becoming east southeast 5 to 7 mph in the morning.
Tonight
Mostly clear, with a low around 60. South southwest wind 7 to 9 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 79. South southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Sunday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 35. North wind 13 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 51. North wind around 10 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 34. North northeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 57. East southeast wind around 6 mph.
Tuesday Night
A 20 percent chance of rain after 2am. Mostly cloudy, with a low around 41. South wind 3 to 5 mph.
Wednesday
A 20 percent chance of rain before 2pm. Mostly cloudy, with a high near 60. East southeast wind 6 to 8 mph.
Wednesday Night
A 20 percent chance of rain after 8pm. Mostly cloudy, with a low around 50. South southwest wind around 7 mph.
Thursday
A 30 percent chance of rain. Mostly sunny, with a high near 73.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 41.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 52.
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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:
4:15 am EDT Mar 21, 2026
Forecast Valid:
4am EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
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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