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 63%
Wind Speed SE 5 mph
Barometer 30.04 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 19 Mar 7:55 pm CDT
Extended Forecast for

Sullivan IN

  • Tonight

    Tonight: Mostly clear, with a low around 49. South wind 5 to 8 mph.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 77. West southwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 77 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46. West northwest wind around 6 mph becoming light and variable after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 74. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 74 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. South wind around 6 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 82. South wind 9 to 16 mph, with gusts as high as 30 mph.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 39. North wind around 14 mph, with gusts as high as 23 mph.

    Low: 39 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 54. North wind around 10 mph, with gusts as high as 20 mph.

    High: 54 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. Northeast wind around 6 mph.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 49. South wind 5 to 8 mph.
Friday
Mostly sunny, with a high near 77. West southwest wind 8 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 46. West northwest wind around 6 mph becoming light and variable after midnight.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 74. Light and variable wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 54. South wind around 6 mph.
Sunday
Mostly sunny, with a high near 82. South wind 9 to 16 mph, with gusts as high as 30 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 39. North wind around 14 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 54. North wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 36. Northeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 57. South southeast wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IN
 39.1°N 87.41°W (Elev. 502 ft)
Last Update:
8:45 pm EDT Mar 19, 2026
Forecast Valid:
9pm EDT Mar 19, 2026-6pm EDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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