Weather forecast for tomorrow
Granite City, IL

Weather forecast for tomorrow

Wednesday, Jun 18.

Isolated Thunderstorms
5:34 am

8:29 pm
CDT
Isolated Thunderstorms
84°F / 68°F
  • Wind: 19mph SW
  • Humidity: 70%
  • Precip. probability: 33%
  • Precipitation: 0.31"
  • UV index: 8
Tomorrow, in Granite City, random storm activity is expected as conditions remain unstable.
With a low probability, light precipitation is anticipated. The highest forecasted temperature is a temperate 84.2°F, while the lowest temperature will be a delightful 68°F.
The maximum heat index, which integrates air moisture with ambient temperature, is estimated at a hot 91.4°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Forecasts show the temperature forecasted to reach the usual June high of 83.8°F.
Sunrise will be at 5:34 am and sunset at 8:29 pm; tomorrow's daylight will last for 14h and 56min.

Frequently asked questions

What is the weather forecast for Granite City for tomorrow?
Tomorrow, brief thunderstorms may pass through parts of the area.
Will it rain tomorrow?
Light precipitation of 0.31" is forecasted in Granite City. The likelihood of rainfall is 33%.
What will be the highest temperature tomorrow?
Tomorrow, the maximum temperature will be 84.2°F, while the minimum temperature will be 68°F. The maximum heat index, which modifies the air temperature to account for humidity, is appraised at 91.4°F.
The maximum temperature will be in line with the average highest temperature of 83.8°F in June. The lowest temperature will be also in line with the average low of 66.7°F.
When is the sunrise / sunset tomorrow?
On Wednesday, in Granite City, sunrise will be at 5:34 am and sunset at 8:29 pm (CDT).
How many hours of daylight will Granite City have tomorrow?
In Granite City, the length of the day tomorrow will be 14h and 56min.

Hourly weather forecast

12 am
  • 79°F
  • Feels like:
    82°F
Partly Cloudy
Partly Cloudy
  • Wind: 5mph S
  • Pressure: 29.8"Hg
  • Humidity: 80%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 10mi
2 am
  • 77°F
  • Feels like:
    81°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph S
  • Pressure: 29.77"Hg
  • Humidity: 83%
  • Precip. probability: 19%
  • Precipitation: 0"
  • Visibility: 10mi
4 am
  • 75°F
  • Feels like:
    79°F
Cloudy
Cloudy
  • Wind: 6mph S
  • Pressure: 29.74"Hg
  • Humidity: 87%
  • Precip. probability: 17%
  • Precipitation: 0"
  • Visibility: 9mi
Sunrise: 5:34 am
6 am
  • 73°F
  • Feels like:
    77°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 7mph S
  • Pressure: 29.77"Hg
  • Humidity: 90%
  • Precip. probability: 14%
  • Precipitation: 0"
  • Visibility: 10mi
8 am
  • 77°F
  • Feels like:
    82°F
Cloudy
Cloudy
  • Wind: 10mph SSW
  • Pressure: 29.77"Hg
  • Humidity: 82%
  • Precip. probability: 12%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 82°F
  • Feels like:
    86°F
Partly Cloudy
Partly Cloudy
  • Wind: 14mph SW
  • Pressure: 29.77"Hg
  • Humidity: 69%
  • Precip. probability: 14%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 82°F
  • Feels like:
    88°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 14mph SW
  • Pressure: 29.77"Hg
  • Humidity: 67%
  • Precip. probability: 51%
  • Precipitation: 0.2"
  • Visibility: 7mi
2 pm
  • 84°F
  • Feels like:
    90°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 19mph SW
  • Pressure: 29.74"Hg
  • Humidity: 63%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 82°F
  • Feels like:
    88°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 17mph WSW
  • Pressure: 29.74"Hg
  • Humidity: 65%
  • Precip. probability: 20%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 81°F
  • Feels like:
    84°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 13mph WSW
  • Pressure: 29.74"Hg
  • Humidity: 68%
  • Precip. probability: 33%
  • Precipitation: 0.08"
  • Visibility: 9mi
8 pm
  • 77°F
  • Feels like:
    81°F
Cloudy
Cloudy
  • Wind: 10mph W
  • Pressure: 29.77"Hg
  • Humidity: 73%
  • Precip. probability: 18%
  • Precipitation: 0"
  • Visibility: 7mi
Sunset: 8:29 pm
10 pm
  • 75°F
  • Feels like:
    77°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph W
  • Pressure: 29.8"Hg
  • Humidity: 79%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 9mi
Tomorrow, a combination of primarily dull and occasionally storm-filled and damp weather is predicted.
Rainfall is forecasted at 12 pm, 3 pm, 5 pm and 6 pm. With moderate precipitation of 0.2", most rainfall is expected at 12 pm.
The temperature will be between a minimum of 73.4°F and a maximum of 84.2°F. The hottest part of the day will be from 1 pm to 3 pm.
The maximum temperature will be comparable to June's average highest temperature of 83.8°F. The lowest temperature is also comparable to June's typical minimum of 66.7°F.
Updated: Jun 17, 2025 @ 08:26:59 UTC
Published by: Weather U.S. | About Us
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