Weather in Grafton, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 05:19 PM ET · Refreshes every hour
79°F
Clear sky
Feels like 79°F
40%
Humidity
7 mph
Wind Speed
About Weather in Grafton
Grafton is located in Illinois (coordinates: 38.976454°N, 90.425698°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.