Grand Ridge, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Ridge, IL in one place.
A chance of showers and thunderstorms after noon. Mostly sunny. High near 90, with temperatures falling to around 88 in the afternoon. Heat index values as high as 102. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Grand Ridge, 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: Jul 17, 2026 10:39 AM CDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Grand Ridge, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 10:39 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Ridge
Saturday looks like the warmest upcoming period in Grand Ridge at 90 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Monday at about 5 to 15 mph S.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 10:39 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
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 before 7pm. Mostly clear, with a low around 66. North northeast wind 5 to 10 mph. Chance of precipitation is 30%.
Sunny, with a high near 84. East northeast wind 0 to 5 mph, with gusts as high as 10 mph.
Mostly clear, with a low around 66.
Mostly sunny, with a high near 88.
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 72.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 85.
Mostly clear, with a low around 63.
Sunny, with a high near 80.
Mostly clear, with a low around 60.
Sunny, with a high near 80.
Partly cloudy, with a low around 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
90°F |
10 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms then Mostly Clear
|
66°F |
5 to 10 mph
NNE
|
|
Sunday
Jul 19
|
Sunny
|
84°F |
0 to 5 mph
ENE
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
66°F |
0 to 5 mph
SE
|
|
Monday
Jul 20
|
Mostly Sunny
|
88°F |
5 to 15 mph
S
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
72°F |
10 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Mostly Sunny
|
85°F |
10 to 15 mph
WNW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
63°F |
5 to 15 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
80°F |
5 to 10 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
60°F |
0 to 5 mph
N
|
|
Thursday
Jul 23
|
Sunny
|
80°F |
0 to 5 mph
W
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
62°F |
0 mph
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Ridge.