Grafton, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Grafton, IL in one place.
Showers and thunderstorms likely. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Grafton, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 10, 2026 9:27 AM CDT.
The active forecast window currently covers Apr 15 to Apr 16, 2026 for Grafton, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 16, 2026
- Latest sync
- Apr 10, 2026 9:27 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grafton
Wednesday looks like the warmest upcoming period in Grafton at 82 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Wednesday at about 13 mph SW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 10, 2026 9:27 AM CDT
- Coverage
- 2 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 59. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
82°F |
13 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
59°F |
6 to 10 mph
SW
|
|
Thursday
Apr 16
|
Chance Rain Showers
|
80°F |
6 to 9 mph
S
|
|
Thursday Night
Apr 16
|
Chance Showers And Thunderstorms
|
59°F |
8 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grafton.
