Sullivan County, IN Weather Forecast
County weather hub
Sunny then Chance Showers And Thunderstorms
Compare major city weather across Sullivan County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Heat index values as high as 101. South southeast wind 0 to 3 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Sullivan County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in Sullivan County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 16 to Jul 21, 2026
- Latest sync
- Jul 14, 2026 10:48 PM EDT
- Forecast office
- IND
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivan County
Thursday looks like the warmest upcoming period in Sullivan County at 91 degrees F.
Sunday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Monday at about 3 to 10 mph SW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 10:48 PM EDT
- Coverage
- 6 days
- Time zone
- America/Indiana/Indianapolis
- Forecast office
- IND
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 73. South southwest wind around 3 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms between 8am and 2pm, then showers and thunderstorms. Mostly sunny, with a high near 89. South southwest wind 2 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 72. West southwest wind 2 to 6 mph. Chance of precipitation is 80%.
A chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 90. West southwest wind 3 to 9 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 2am. Mostly clear, with a low around 72. West southwest wind 5 to 8 mph. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 89. West wind 5 to 8 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 71. Chance of precipitation is 20%.
A chance of showers and thunderstorms between 8am and 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
A slight chance of rain showers before 8am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 16
|
Sunny then Chance Showers And Thunderstorms
|
91°F |
0 to 3 mph
SSE
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
3 mph
SSW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
89°F |
2 to 6 mph
SSW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
72°F |
2 to 6 mph
WSW
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
90°F |
3 to 9 mph
WSW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
72°F |
5 to 8 mph
WSW
|
|
Sunday
Jul 19
|
Sunny then Slight Chance Showers And Thunderstorms
|
89°F |
5 to 8 mph
W
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
71°F |
3 to 8 mph
SW
|
|
Monday
Jul 20
|
Chance Showers And Thunderstorms
|
90°F |
3 to 10 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
71°F |
6 to 9 mph
WSW
|
|
Tuesday
Jul 21
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
88°F |
6 to 10 mph
WNW
|
Major City Forecasts
Live forecast snapshots for major cities across Sullivan County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Sullivan County.
Largest mapped city population in this region: 4,089.
