Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Hazardous Weather Conditions

Current conditions at

Putnam County Regional Airport (KGPC)

Lat: 39.64°NLon: 86.82°WElev: 827ft.

Overcast

52°F

11°C

Humidity 88%
Wind Speed SE 7 mph
Barometer 29.93 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 27 Dec 5:35 pm EST
Extended Forecast for

Greencastle IN

  • Tonight

    Tonight: A 30 percent chance of showers, mainly between midnight and 5am.  Patchy fog after 2am.  Otherwise, cloudy, with a temperature rising to around 61 by 5am. Southeast wind around 9 mph, with gusts as high as 18 mph.

    Low: 53 °F

    Cloudy then
    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 4pm.  Patchy fog before 8am.  Otherwise, cloudy, with a high near 67. South southwest wind 9 to 16 mph, with gusts as high as 29 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 11pm, then a chance of rain and snow showers between 11pm and midnight, then a chance of snow showers after midnight. Some thunder is also possible.  Low around 18. Breezy, with a west wind 16 to 22 mph, with gusts as high as 40 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Breezy.
    Rain/Snow
    then Chance
    Snow Showers

  • Monday

    Monday: A 10 percent chance of snow showers before 7am.  Mostly cloudy, with a high near 25. Breezy, with a west wind 18 to 22 mph, with gusts as high as 41 mph.

    High: 25 °F

    Breezy.
    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14. West northwest wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 14 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 26. West wind around 10 mph, with gusts as high as 20 mph.

    High: 26 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22. West southwest wind 7 to 9 mph.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 36. West wind around 10 mph, with gusts as high as 18 mph.

    High: 36 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow showers.  Mostly cloudy, with a low around 23. West wind around 7 mph.

    Low: 23 °F

    Slight Chance
    Snow Showers

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly between midnight and 5am. Patchy fog after 2am. Otherwise, cloudy, with a temperature rising to around 61 by 5am. Southeast wind around 9 mph, with gusts as high as 18 mph.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Patchy fog before 8am. Otherwise, cloudy, with a high near 67. South southwest wind 9 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Rain showers before 11pm, then a chance of rain and snow showers between 11pm and midnight, then a chance of snow showers after midnight. Some thunder is also possible. Low around 18. Breezy, with a west wind 16 to 22 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
A 10 percent chance of snow showers before 7am. Mostly cloudy, with a high near 25. Breezy, with a west wind 18 to 22 mph, with gusts as high as 41 mph.
Monday Night
Mostly cloudy, with a low around 14. West northwest wind 13 to 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 26. West wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 22. West southwest wind 7 to 9 mph.
Wednesday
Partly sunny, with a high near 36. West wind around 10 mph, with gusts as high as 18 mph.
Wednesday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 23. West wind around 7 mph.
New Year's Day
Partly sunny, with a high near 31. Northwest wind 7 to 9 mph.
Thursday Night
Partly cloudy, with a low around 14.
Friday
Mostly sunny, with a high near 31.
Friday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 23.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
Greencastle IN
 39.65°N 86.86°W (Elev. 850 ft)
5:15 pm EST Dec 27, 2025
5pm EST Dec 27, 2025-6pm EST Jan 3, 2026
 
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Additional Resources

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