| NWS Forecast for: Sullivan County Issued by: National Weather Service Indianapolis, IN Last Update: 229 AM EDT Mon Sep 21 2026 | |
Today: Cloudy. Showers likely with a chance of thunderstorms toward daybreak, then a chance of showers through early afternoon. Not as warm with highs in the mid 70s. Northeast winds 5 to 10 mph. Gusts up to 20 mph late this afternoon. Chance of rain 70 percent. Tonight: Mostly cloudy. Lows in the upper 50s. Northeast winds 5 to 10 mph. Gusts up to 20 mph through the late overnight. Tuesday: Mostly cloudy. Highs in the lower 70s. Northeast winds around 10 mph. Gusts up to 20 mph late in the afternoon. Tuesday Night: Partly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph. Gusts up to 20 mph through the late overnight. Wednesday: Partly cloudy. Highs in the lower 70s. North winds 5 to 10 mph. Gusts up to 20 mph late in the afternoon. Wednesday Night Through Thursday Night: Partly cloudy. Lows in the mid 50s. Highs in the mid 70s. Friday And Friday Night: Mostly clear. Highs in the mid 70s. Lows in the lower 50s. Saturday And Saturday Night: Partly cloudy. Highs in the mid 70s. Lows in the lower 50s. Sunday: Partly cloudy through early afternoon, then clearing. Highs in the upper 70s. | |
| Zone Forecast: Sullivan County | |
Visit your local NWS office at: https://www.weather.gov/ind |