Grand Tower, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Tower, IL in one place.
Showers and thunderstorms likely. Mostly cloudy, with a high near 67. West northwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Grand Tower, 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 16, 2026 1:59 PM CDT.
The active forecast window currently covers Apr 18 to Apr 22, 2026 for Grand Tower, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 1:59 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Tower
Wednesday looks like the warmest upcoming period in Grand Tower at 80 degrees F.
Saturday Night is the coolest period ahead with temperatures near 40 degrees F.
The strongest winds are forecast for Saturday at about 14 mph WNW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 1:59 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KPAH
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers before 1am. Partly cloudy, with a low around 40. Northwest wind 5 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunny, with a high near 68. West northwest wind 3 to 9 mph.
Clear, with a low around 43. East northeast wind 3 to 7 mph.
Sunny, with a high near 72. South wind 5 to 8 mph.
Mostly clear, with a low around 50. South wind around 7 mph.
Mostly sunny, with a high near 77. South southwest wind 6 to 12 mph, with gusts as high as 20 mph.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 54. South southwest wind 6 to 9 mph.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 80. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly clear, with a low around 57. South wind around 9 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
67°F |
14 mph
WNW
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
40°F |
5 to 12 mph
NW
|
|
Sunday
Apr 19
|
Sunny
|
68°F |
3 to 9 mph
WNW
|
|
Sunday Night
Apr 19
|
Clear
|
43°F |
3 to 7 mph
ENE
|
|
Monday
Apr 20
|
Sunny
|
72°F |
5 to 8 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
50°F |
7 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
77°F |
6 to 12 mph
SSW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Rain Showers
|
54°F |
6 to 9 mph
SSW
|
|
Wednesday
Apr 22
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
80°F |
6 to 10 mph
SSW
|
|
Wednesday Night
Apr 22
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
57°F |
9 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Tower.
