Weather forecast for tomorrow
Grand Tower, IL

Weather forecast for tomorrow

Wednesday, Jun 18.

PM Thunderstorms
5:34 am

8:23 pm
CDT
PM Thunderstorms
84°F / 70°F
  • Wind: 19mph SSW
  • Humidity: 75%
  • Precip. probability: 39%
  • Precipitation: 0.83"
  • UV index: 8
Tomorrow, on Wednesday, scattered thunderstorms are also likely by the afternoon.
Substantial precipitation is expected. Temperature fluctuations between a moderately hot 84.2°F and a delightful 69.8°F are forecasted.
The maximum heat index, which modifies the air temperature to account for humidity, is appraised at a hot 93.2°F. Note that heat index values are valued for light wind and location in the shade.
The forecasted maximum temperature will closely reflect June's average high of 84.7°F.
Sunrise will be at 5:34 am and sunset at 8:23 pm; tomorrow's daylight will last for 14h and 49min.

Frequently asked questions

What is the weather forecast for Grand Tower for tomorrow?
Tomorrow, thunder and rain showers will move in during the afternoon.
Will it rain tomorrow?
Yes, it will rain tomorrow. High precipitation of 0.83" is forecasted.
What will be the highest temperature tomorrow?
Tomorrow, the maximum temperature will be 84.2°F, while the minimum temperature will be 69.8°F. The maximum heat index, which factors the actual air temperature with the relative humidity, is assessed at 93.2°F.
The maximum temperature will be in line with the average highest temperature of 84.7°F in June. The lowest temperature will be also in line with the average low of 66.4°F.
When is the sunrise / sunset tomorrow?
On Wednesday, in Grand Tower, sunrise will be at 5:34 am and sunset at 8:23 pm (CDT).
How long will the day be tomorrow?
In Grand Tower, tomorrow, there will be 14h and 49min of daylight.

Hourly weather forecast

12 am
  • 77°F
  • Feels like:
    81°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph S
  • Pressure: 29.83"Hg
  • Humidity: 90%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 10mi
2 am
  • 75°F
  • Feels like:
    81°F
Partly Cloudy
Partly Cloudy
  • Wind: 5mph S
  • Pressure: 29.83"Hg
  • Humidity: 91%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 10mi
4 am
  • 75°F
  • Feels like:
    79°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph SSW
  • Pressure: 29.8"Hg
  • Humidity: 96%
  • Precip. probability: 13%
  • Precipitation: 0"
  • Visibility: 9mi
Sunrise: 5:34 am
6 am
  • 75°F
  • Feels like:
    79°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph S
  • Pressure: 29.83"Hg
  • Humidity: 91%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 10mi
8 am
  • 77°F
  • Feels like:
    82°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 14mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 89%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 81°F
  • Feels like:
    88°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 17mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 77%
  • Precip. probability: 11%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 82°F
  • Feels like:
    90°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 19mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 71%
  • Precip. probability: 21%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 84°F
  • Feels like:
    91°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 19mph SW
  • Pressure: 29.83"Hg
  • Humidity: 69%
  • Precip. probability: 32%
  • Precipitation: 0.08"
  • Visibility: 9mi
4 pm
  • 84°F
  • Feels like:
    91°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 17mph SW
  • Pressure: 29.8"Hg
  • Humidity: 68%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 82°F
  • Feels like:
    88°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 12mph SW
  • Pressure: 29.8"Hg
  • Humidity: 73%
  • Precip. probability: 35%
  • Precipitation: 0.04"
  • Visibility: 7mi
8 pm
  • 77°F
  • Feels like:
    82°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 9mph SW
  • Pressure: 29.8"Hg
  • Humidity: 81%
  • Precip. probability: 41%
  • Precipitation: 0.04"
  • Visibility: 7mi
Sunset: 8:23 pm
10 pm
  • 75°F
  • Feels like:
    79°F
Thunderstorms
Thunderstorms
  • Wind: 9mph SW
  • Pressure: 29.83"Hg
  • Humidity: 90%
  • Precip. probability: 71%
  • Precipitation: 0.16"
  • Visibility: 6mi
Tomorrow, on Wednesday, a combination of primarily dull and occasionally unstable and showery weather is expected.
Rainfall is forecasted from 1 pm to 3 pm, and from 5 pm to 11 pm. With moderate precipitation of 0.28", most rainfall is expected at 9 pm.
The temperature will be between a minimum of 73.4°F and a maximum of 84.2°F. The feels-like temperature will vary between the lowest temperature of 75.2°F and the highest temperature of 91.4°F. The hottest part of the day will be from 1 pm to 4 pm.
The high temperature is expected to be in line with June's usual value of 84.7°F. The lowest temperature is also close to June's typical minimum of 66.4°F.
Updated: Jun 17, 2025 @ 21:09:31 UTC
Published by: Weather U.S. | About Us
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