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

Robinson Municipal Airport (KRSV)

Lat: 39.01°NLon: 87.65°WElev: 449ft.

A Few Clouds

45°F

7°C

Humidity 53%
Wind Speed SE 6 mph
Barometer 30.41 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 28 Mar 7:55 pm CDT
Extended Forecast for

Sullivan IN

  • Tonight

    Tonight: Increasing clouds, with a low around 36. South southeast wind around 6 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 66. South southwest wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53. South wind around 9 mph, with gusts as high as 18 mph.

    Low: 53 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 76. South southwest wind 10 to 15 mph, with gusts as high as 29 mph.

    High: 76 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. South southwest wind 11 to 14 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of rain and thunderstorms after 2pm. Partly sunny, with a high near 81. South southwest wind 15 to 18 mph, with gusts as high as 33 mph.

    High: 81 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 8pm. Low around 46. Southwest wind around 14 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    Low: 46 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before 8am, then rain likely. High near 55. North northeast wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    High: 55 °F

    Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 41. East northeast wind around 11 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Chance Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 36. South southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 66. South southwest wind 7 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 53. South wind around 9 mph, with gusts as high as 18 mph.
Monday
Partly sunny, with a high near 76. South southwest wind 10 to 15 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around 63. South southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Tuesday
A 40 percent chance of rain and thunderstorms after 2pm. Partly sunny, with a high near 81. South southwest wind 15 to 18 mph, with gusts as high as 33 mph.
Tuesday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 8pm. Low around 46. Southwest wind around 14 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Wednesday
Rain and possibly a thunderstorm before 8am, then rain likely. High near 55. North northeast wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 41. East northeast wind around 11 mph, with gusts as high as 21 mph.
Thursday
Rain likely. Mostly cloudy, with a high near 59. East northeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 46.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 68.
Friday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 54.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IN
 39.1°N 87.41°W (Elev. 502 ft)
Last Update:
8:56 pm EDT Mar 28, 2026
Forecast Valid:
9pm EDT Mar 28, 2026-6pm EDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation