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

48°F

9°C

Humidity 94%
Wind Speed S 2 mph
Barometer 29.96 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 7 Oct 7:15 am CDT
Extended Forecast for

Sullivan IN

  • Today

    Today: Sunny, with a high near 85. West southwest wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. West southwest wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, sunny, with a high near 80. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 50. Light and variable wind.

    Low: 50 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 82. East wind 3 to 6 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. Southeast wind 3 to 5 mph.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83. South wind 3 to 7 mph.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 59. Southeast wind around 5 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. East wind around 8 mph. Chance of precipitation is 70%.

    High: 74 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 85. West southwest wind 5 to 9 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 52. West southwest wind around 5 mph becoming calm in the evening.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 80. Calm wind becoming west northwest around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 50. Light and variable wind.
Friday
Sunny, with a high near 82. East wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 56. Southeast wind 3 to 5 mph.
Saturday
Sunny, with a high near 83. South wind 3 to 7 mph.
Saturday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 59. Southeast wind around 5 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. East wind around 8 mph. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 56. North wind around 6 mph becoming calm in the evening.
Columbus Day
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IN
 39.09°N 87.39°W (Elev. 499 ft)
Last Update:
8:15 am EDT Oct 7, 2026
Forecast Valid:
8am EDT Oct 7, 2026-6pm EDT Oct 13, 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