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

Robinson Municipal Airport (KRSV)

Lat: 39.01°NLon: 87.65°WElev: 449ft.

Fog/Mist

55°F

13°C

Humidity 100%
Wind Speed SE 10 mph
Barometer 29.88 in
Dewpoint 55°F (13°C)
Visibility 5.00 mi
Wind Chill52°F (11°C)
Last update 27 Dec 4:35 pm CST
Extended Forecast for

Sullivan IN

  • Tonight

    Tonight: A slight chance of showers between 11pm and 2am.  Patchy fog after 2am.  Otherwise, cloudy, with a temperature rising to around 63 by 4am. East southeast wind around 8 mph becoming south after midnight.  Chance of precipitation is 20%.

    Low: 57 °F

    Slight 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 70. South southwest wind 9 to 17 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before midnight, then a chance of snow showers between midnight and 4am. Some thunder is also possible.  Low around 19. Breezy, with a west wind 17 to 21 mph, with gusts as high as 39 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 19 °F

    Showers then
    Chance Snow
    Showers and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 27. Breezy, with a west wind 17 to 21 mph, with gusts as high as 39 mph.

    High: 27 °F

    Partly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. West northwest wind 11 to 14 mph, with gusts as high as 25 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29. West northwest wind around 10 mph, with gusts as high as 18 mph.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 22. Southwest wind around 7 mph.

    Low: 22 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 39. West wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 39 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24. West wind around 6 mph.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers between 11pm and 2am. Patchy fog after 2am. Otherwise, cloudy, with a temperature rising to around 63 by 4am. East southeast wind around 8 mph becoming south after midnight. Chance of precipitation is 20%.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Patchy fog before 8am. Otherwise, cloudy, with a high near 70. South southwest wind 9 to 17 mph, with gusts as high as 30 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 midnight, then a chance of snow showers between midnight and 4am. Some thunder is also possible. Low around 19. Breezy, with a west wind 17 to 21 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 27. Breezy, with a west wind 17 to 21 mph, with gusts as high as 39 mph.
Monday Night
Partly cloudy, with a low around 15. West northwest wind 11 to 14 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 29. West northwest wind around 10 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 22. Southwest wind around 7 mph.
Wednesday
Partly sunny, with a high near 39. West wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly cloudy, with a low around 24. West wind around 6 mph.
New Year's Day
Mostly sunny, with a high near 35. Northwest wind 6 to 9 mph.
Thursday Night
Mostly clear, with a low around 15.
Friday
Mostly sunny, with a high near 34.
Friday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 25.
Saturday
A 20 percent chance of showers. Mostly cloudy, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IN
 39.1°N 87.41°W (Elev. 502 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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Hourly Weather Forecast

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