Sullivan County, IN Weather Forecast
County weather hub
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.
Showers and thunderstorms. Cloudy, with a high near 82. Southeast wind 6 to 12 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half 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
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 11:56 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 82 degrees F.
Saturday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Friday at about 18 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 11:56 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
Showers and thunderstorms. Mostly cloudy, with a low around 52. West southwest wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain showers before 8am. Partly sunny, with a high near 61. Northwest wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Mostly clear, with a low around 38. North northwest wind 5 to 17 mph, with gusts as high as 28 mph.
Sunny, with a high near 60. North northeast wind 2 to 6 mph.
Clear, with a low around 36. East southeast wind around 2 mph.
Sunny, with a high near 68. South wind 2 to 8 mph.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 70.
Mostly cloudy, with a low around 48.
Mostly sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
82°F |
6 to 12 mph
SE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms
|
52°F |
7 to 15 mph
WSW
|
|
Friday
Oct 16
|
Chance Rain Showers then Partly Sunny
|
61°F |
18 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear
|
38°F |
5 to 17 mph
NNW
|
|
Saturday
Oct 17
|
Sunny
|
60°F |
2 to 6 mph
NNE
|
|
Saturday Night
Oct 17
|
Clear
|
36°F |
2 mph
ESE
|
|
Sunday
Oct 18
|
Sunny
|
68°F |
2 to 8 mph
S
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
44°F |
6 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
70°F |
5 to 8 mph
SSW
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
48°F |
1 to 6 mph
SSE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
75°F |
1 to 5 mph
SE
|
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.
