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.

Fair

57°F

14°C

Humidity 88%
Wind Speed Vrbl 3 mph
Barometer 30.10 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 28 Sep 8:55 am CDT
Extended Forecast for

Sullivan IN

  • Today

    Today: Sunny, with a high near 80. North northeast wind 3 to 5 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 49. Light north northeast wind.

    Low: 49 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 55. Light east southeast wind.

    Low: 55 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Light south southeast wind becoming south 5 to 9 mph in the morning.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66. South southeast wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers after 2pm. Partly sunny, with a high near 86. South wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 86 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 64. West wind around 6 mph becoming north after midnight. Chance of precipitation is 50%.

    Low: 64 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 71. North northeast wind around 9 mph. Chance of precipitation is 50%.

    High: 71 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 80. North northeast wind 3 to 5 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 49. Light north northeast wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 82. Light and variable wind.
Tuesday Night
Partly cloudy, with a low around 55. Light east southeast wind.
Wednesday
Mostly sunny, with a high near 87. Light south southeast wind becoming south 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 66. South southeast wind around 6 mph.
Thursday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 86. South wind 7 to 11 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 64. West wind around 6 mph becoming north after midnight. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 71. North northeast wind around 9 mph. Chance of precipitation is 50%.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58. North northeast wind 5 to 8 mph.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 70.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 59.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 71.
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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:
9:47 am EDT Sep 28, 2026
Forecast Valid:
10am EDT Sep 28, 2026-6pm EDT Oct 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation