Weather World
Sullivan County, IN Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Sullivan County Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  |  |  |  | | | | | | |
| Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Clearing | Sunny | Clear | Clear | Clear | Mostly Sunny | Partly Cloudy | Mostly Clear | Mostly Clear |
| Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 59°FHi: 15°C | Lo: 40°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C Lo: 39°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C |
| POP: 80% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 228 AM EDT Thu Oct 15 2026 
Sullivan County Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Sullivan County Weather Map
Sullivan County Quick Facts
Sullivan County Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 132 AM EDT Thu Oct 15 2026
Key Messages
- Showers and thunderstorms today, with isolated severe storms capable of damaging winds this afternoon and evening
- Strong post-frontal northwest winds will gust between 30 and 40 mph on Friday
- Widespread frost and localized freeze conditions are likely Saturday night into Sunday morning
Discussion
(Today through Wednesday)... Issued at 131 AM EDT Thu Oct 15 2026
Today through Friday.
As of early this morning, the front that brought rain to central Indiana is south of the forecast area, bu...