Weather in Monmouth, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 05:17 PM ET · Refreshes every hour
81°F
Partly cloudy
Feels like 80°F
32%
Humidity
1 mph
Wind Speed
About Weather in Monmouth
Monmouth is located in Illinois (coordinates: 40.914233°N, 90.643075°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.