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.

Fog/Mist

61°F

16°C

Humidity 100%
Wind Speed NW 2 mph
Barometer 30.11 in
Dewpoint 61°F (16°C)
Visibility 6.00 mi
Last update 28 Aug 6:55 am CDT
Extended Forecast for

Sullivan IN

  • Today

    Today: Sunny, with a high near 83. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Patchy fog between 3am and 5am. Otherwise, mostly clear, with a low around 61. East northeast wind 3 to 5 mph.

    Low: 61 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog between 8am and 9am. Otherwise, sunny, with a high near 85. Light and variable wind.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 91. Light south southeast wind becoming south southwest 5 to 9 mph in the morning.

    High: 91 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71. South wind 5 to 7 mph.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 94. South southwest wind 5 to 9 mph.

    High: 94 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. South wind 3 to 7 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Southwest wind 3 to 8 mph.

    High: 96 °F

    Hot

Detailed Forecast

Today
Sunny, with a high near 83. Calm wind becoming north northeast around 6 mph in the afternoon.
Tonight
Patchy fog between 3am and 5am. Otherwise, mostly clear, with a low around 61. East northeast wind 3 to 5 mph.
Saturday
Patchy fog between 8am and 9am. Otherwise, sunny, with a high near 85. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 64. Calm wind.
Sunday
Sunny and hot, with a high near 91. Light south southeast wind becoming south southwest 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 71. South wind 5 to 7 mph.
Monday
Sunny and hot, with a high near 94. South southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 73. South wind 3 to 7 mph.
Tuesday
Sunny and hot, with a high near 96. Southwest wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 75. South wind around 6 mph.
Wednesday
Sunny and hot, with a high near 96.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 73.
Thursday
A 20 percent chance of showers. Sunny and hot, with a high near 96.
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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:
8:06 am EDT Aug 28, 2026
Forecast Valid:
8am EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
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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