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

41°F

5°C

Humidity 87%
Wind Speed SE 1 mph
Barometer 30.08 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 19 Mar 1:35 am CDT
Extended Forecast for

Sullivan IN

  • Overnight

    Overnight: Cloudy, with a low around 39. Light south wind.

    Low: 39 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy through mid morning, then gradual clearing, with a high near 68. South wind 3 to 6 mph.

    High: 68 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. Southeast wind 3 to 5 mph.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. South wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47. West southwest wind around 6 mph becoming north after midnight.

    Low: 47 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74. Light and variable wind becoming northwest around 5 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. South wind 3 to 6 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain and thunderstorms before 2am. Mostly cloudy, with a low around 39. West wind 11 to 14 mph becoming north after midnight. Winds could gust as high as 24 mph.

    Low: 39 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Cloudy, with a low around 39. Light south wind.
Thursday
Mostly cloudy through mid morning, then gradual clearing, with a high near 68. South wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 49. Southeast wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 75. South wind 6 to 11 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 47. West southwest wind around 6 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 74. Light and variable wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 54. South wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 80. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Sunday Night
A 20 percent chance of rain and thunderstorms before 2am. Mostly cloudy, with a low around 39. West wind 11 to 14 mph becoming north after midnight. Winds could gust as high as 24 mph.
Monday
Mostly sunny, with a high near 52. North wind around 11 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 65.
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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:
2:45 am EDT Mar 19, 2026
Forecast Valid:
3am EDT Mar 19, 2026-6pm EDT Mar 25, 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