Weather in Janesville, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 05:26 PM ET · Refreshes every hour
75°F
Clear sky
Feels like 79°F
63%
Humidity
5 mph
Wind Speed
About Weather in Janesville
Janesville is located in Illinois (coordinates: 39.375243°N, 88.244991°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.