Grand Tower, IL Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Tower, IL in one place.
A slight chance of rain showers between 7am and 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 90. West wind 2 to 6 mph. Chance of precipitation is 60%.
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: Jul 15, 2026 4:59 AM CDT.
The active forecast window currently covers Jul 17 to Jul 21, 2026 for Grand Tower, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 4:59 AM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Tower
Monday looks like the warmest upcoming period in Grand Tower at 95 degrees F.
Friday Night is the coolest period ahead with temperatures near 73 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 8 mph NW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 4:59 AM 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
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. West southwest wind around 3 mph.
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. West wind around 6 mph.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 74. West southwest wind around 5 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. West wind around 5 mph.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 74. Southwest wind around 3 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Southwest wind 2 to 7 mph.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. West southwest wind around 7 mph.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 92. Northwest wind 5 to 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Slight Chance Showers And Thunderstorms
|
90°F |
2 to 6 mph
W
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
73°F |
3 mph
WSW
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
93°F |
6 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms then Mostly Clear
|
74°F |
5 mph
WSW
|
|
Sunday
Jul 19
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
5 mph
W
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
74°F |
3 mph
SW
|
|
Monday
Jul 20
|
Sunny then Slight Chance Showers And Thunderstorms
|
95°F |
2 to 7 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
75°F |
7 mph
WSW
|
|
Tuesday
Jul 21
|
Slight Chance Rain Showers then Mostly Sunny
|
92°F |
5 to 8 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Tower.
