Weather in Sullivan, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 04:57 PM ET · Refreshes every hour
77°F
Clear sky
Feels like 78°F
53%
Humidity
10 mph
Wind Speed
About Weather in Sullivan
Sullivan is located in Illinois (coordinates: 39.595166°N, 88.608949°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.