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

59°F

15°C

Humidity 72%
Wind Speed S 13 mph
Barometer 30.08 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 30 Mar 6:15 am CDT
Extended Forecast for

Sullivan IN

  • Today

    Today: Partly sunny, with a high near 77. South southwest wind 8 to 18 mph, with gusts as high as 32 mph.

    High: 77 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. South southwest wind around 14 mph, with gusts as high as 25 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after 2pm. Mostly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 22 mph, with gusts as high as 38 mph.

    High: 82 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 57. South southwest wind 10 to 13 mph, with gusts as high as 25 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 71. North northwest wind around 10 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 61. Southeast wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Rain

  • Thursday

    Thursday: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 77. South southwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 77 °F

    Chance
    T-storms then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm. Low around 61. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 61 °F

    Rain

  • Friday

    Friday: Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. South southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 74 °F

    Rain Likely

Detailed Forecast

Today
Partly sunny, with a high near 77. South southwest wind 8 to 18 mph, with gusts as high as 32 mph.
Tonight
Partly cloudy, with a low around 62. South southwest wind around 14 mph, with gusts as high as 25 mph.
Tuesday
A 20 percent chance of rain after 2pm. Mostly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 22 mph, with gusts as high as 38 mph.
Tuesday Night
A 50 percent chance of rain and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 57. South southwest wind 10 to 13 mph, with gusts as high as 25 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain and possibly a thunderstorm. High near 71. North northwest wind around 10 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Rain and possibly a thunderstorm. Low around 61. Southeast wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 77. South southwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Thursday Night
Rain and possibly a thunderstorm. Low around 61. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. South southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Friday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 59. South wind 7 to 9 mph. Chance of precipitation is 60%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Saturday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 42.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 56.
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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:
7:15 am EDT Mar 30, 2026
Forecast Valid:
7am EDT Mar 30, 2026-6pm EDT Apr 5, 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