Weather in Vandalia, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 04:11 PM ET · Refreshes every hour
75°F
Partly cloudy
Feels like 81°F
73%
Humidity
4 mph
Wind Speed
About Weather in Vandalia
Vandalia is located in Illinois (coordinates: 38.974564°N, 89.110695°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.