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

76°F

24°C

Humidity 38%
Wind Speed SW 13 G 22 mph
Barometer 29.82 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 20 Mar 3:35 pm EDT
Extended Forecast for

Greencastle IN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 77. West southwest wind around 11 mph.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. Northwest wind 6 to 8 mph becoming north northeast after midnight.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73. East northeast wind 5 to 7 mph becoming south in the afternoon.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. South southwest wind 5 to 7 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of rain between 2pm and 5pm, then a slight chance of rain and thunderstorms after 5pm. Mostly sunny, with a high near 80. South southwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of rain and thunderstorms before 11pm, then a chance of rain between 11pm and 2am. Mostly cloudy, with a low around 36. North wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 36 °F

    Chance Rain

  • Monday

    Monday: Mostly sunny, with a high near 51. North wind around 10 mph, with gusts as high as 20 mph.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33. North northeast wind around 6 mph becoming east after midnight.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55. Southeast wind 5 to 7 mph.

    High: 55 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 77. West southwest wind around 11 mph.
Tonight
Mostly cloudy, with a low around 45. Northwest wind 6 to 8 mph becoming north northeast after midnight.
Saturday
Mostly sunny, with a high near 73. East northeast wind 5 to 7 mph becoming south in the afternoon.
Saturday Night
Mostly clear, with a low around 58. South southwest wind 5 to 7 mph.
Sunday
A slight chance of rain between 2pm and 5pm, then a slight chance of rain and thunderstorms after 5pm. Mostly sunny, with a high near 80. South southwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Sunday Night
A chance of rain and thunderstorms before 11pm, then a chance of rain between 11pm and 2am. Mostly cloudy, with a low around 36. North wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 51. North wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 33. North northeast wind around 6 mph becoming east after midnight.
Tuesday
Mostly cloudy, with a high near 55. Southeast wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 39. South wind around 6 mph becoming west after midnight.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 45.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 73.
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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:
3:45 pm EDT Mar 20, 2026
Forecast Valid:
3pm EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
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Additional Resources

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Chance of Precipitation