Weather in Mason City, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 08:49 PM ET · Refreshes every hour
75°F
Clear sky
Feels like 72°F
37%
Humidity
3 mph
Wind Speed
About Weather in Mason City
Mason City is located in Illinois (coordinates: 40.202192°N, 89.697104°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.