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.

Overcast

37°F

3°C

Humidity 70%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 14 Mar 4:55 am CDT
Extended Forecast for

Sullivan IN

  • Today

    Today: Partly sunny, with a high near 55. North northeast wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 55 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. East southeast wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 15 to 20 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 40%.

    High: 70 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and thunderstorms. Low around 26. Breezy, with a south wind 18 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 26 °F

    Showers and
    Breezy

  • Monday

    Monday: A 40 percent chance of snow showers. Cloudy, with a high near 30. Breezy, with a west wind around 22 mph, with gusts as high as 37 mph.

    High: 30 °F

    Chance Snow
    Showers and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 13. West northwest wind 13 to 18 mph, with gusts as high as 29 mph.

    Low: 13 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 30. West wind around 10 mph, with gusts as high as 18 mph.

    High: 30 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow after 2am. Mostly cloudy, with a low around 23. Light and variable wind becoming south southeast 5 to 9 mph after midnight.

    Low: 23 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow before 8am. Mostly cloudy, with a high near 53. South southwest wind around 15 mph, with gusts as high as 28 mph.

    High: 53 °F

    Chance Snow
    then Partly
    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 55. North northeast wind 5 to 10 mph becoming east southeast in the afternoon.
Tonight
Partly cloudy, with a low around 46. East southeast wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 15 to 20 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 40%.
Sunday Night
Showers and thunderstorms. Low around 26. Breezy, with a south wind 18 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
A 40 percent chance of snow showers. Cloudy, with a high near 30. Breezy, with a west wind around 22 mph, with gusts as high as 37 mph.
Monday Night
Mostly cloudy, with a low around 13. West northwest wind 13 to 18 mph, with gusts as high as 29 mph.
Tuesday
Partly sunny, with a high near 30. West wind around 10 mph, with gusts as high as 18 mph.
Tuesday Night
A 30 percent chance of snow after 2am. Mostly cloudy, with a low around 23. Light and variable wind becoming south southeast 5 to 9 mph after midnight.
Wednesday
A 30 percent chance of snow before 8am. Mostly cloudy, with a high near 53. South southwest wind around 15 mph, with gusts as high as 28 mph.
Wednesday Night
Mostly clear, with a low around 36. South southwest wind around 7 mph.
Thursday
Sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivan IN
 39.1°N 87.41°W (Elev. 502 ft)
Last Update:
5:45 am EDT Mar 14, 2026
Forecast Valid:
6am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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