Weather in Monticello, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 05:19 PM ET · Refreshes every hour
77°F
Clear sky
Feels like 74°F
41%
Humidity
10 mph
Wind Speed
About Weather in Monticello
Monticello is located in Illinois (coordinates: 40.033545°N, 88.574111°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.