Weather forecast for tomorrow
Summit, IL

Weather forecast for tomorrow

Thursday, Jun 19.

AM Showers
5:14 am

8:30 pm
CDT
AM Showers
84°F / 68°F
  • Wind: 11mph WNW
  • Humidity: 57%
  • Precip. probability: 46%
  • Precipitation: 0.08"
  • UV index: 9
Tomorrow, on Thursday, expect a light morning drizzle with brief periods of rain.
Minimal precipitation is predicted. The highest temperature will be a moderately hot 84.2°F, while the lowest expected temperature is a delightful 68°F.
The maximum heat index, which factors the actual air temperature with the relative humidity, is assessed at a blazing 87.8°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Forecast models suggest hotter conditions, with a peak that mirrors July's climate average rather than June's.
Sunrise will be at 5:14 am and sunset at 8:30 pm; tomorrow's daylight will last for 15h and 16min.

Frequently asked questions

What is the weather forecast for Summit for tomorrow?
Tomorrow, expect a few brief rain showers in the morning hours.
Will it rain tomorrow?
Tomorrow, there is a low chance of minimal precipitation in Summit.
What will be the maximum temperature tomorrow?
Tomorrow, the maximum temperature will be 84.2°F, while the minimum temperature will be 68°F. The maximum heat index, which combines air temperature and relative humidity, is evaluated at 87.8°F.
The maximum temperature will be a few degrees higher than the average highest temperature of 75.2°F in June. The lowest temperature will be also relatively higher than the average low of 61.5°F.
When are sunrise and sunset tomorrow in Summit?
On Thursday, in Summit, sunrise will be at 5:14 am and sunset at 8:30 pm (CDT).
How long will the day be tomorrow?
In Summit, the length of the day tomorrow will be 15h and 16min.

Hourly weather forecast

12 am
  • 68°F
  • Feels like:
    70°F
Cloudy
Cloudy
  • Wind: 8mph WNW
  • Pressure: 29.71"Hg
  • Humidity: 84%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 5mi
2 am
  • 68°F
  • Feels like:
    68°F
Showers
Showers
  • Wind: 7mph WNW
  • Pressure: 29.74"Hg
  • Humidity: 86%
  • Precip. probability: 35%
  • Precipitation: 0.04"
  • Visibility: 7mi
4 am
  • 68°F
  • Feels like:
    68°F
Few Showers
Few Showers
  • Wind: 7mph NW
  • Pressure: 29.74"Hg
  • Humidity: 86%
  • Precip. probability: 34%
  • Precipitation: 0.04"
  • Visibility: 7mi
Sunrise: 5:14 am
6 am
  • 68°F
  • Feels like:
    68°F
Few Showers
Few Showers
  • Wind: 7mph WNW
  • Pressure: 29.8"Hg
  • Humidity: 86%
  • Precip. probability: 32%
  • Precipitation: 0.04"
  • Visibility: 7mi
8 am
  • 70°F
  • Feels like:
    70°F
Showers
Showers
  • Wind: 7mph WNW
  • Pressure: 29.83"Hg
  • Humidity: 80%
  • Precip. probability: 47%
  • Precipitation: 0.04"
  • Visibility: 7mi
10 am
  • 75°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Wind: 8mph WNW
  • Pressure: 29.85"Hg
  • Humidity: 69%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 81°F
  • Feels like:
    82°F
Mostly Sunny
Mostly Sunny
  • Wind: 9mph WNW
  • Pressure: 29.88"Hg
  • Humidity: 52%
  • Precip. probability: 10%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 82°F
  • Feels like:
    84°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph W
  • Pressure: 29.88"Hg
  • Humidity: 44%
  • Precip. probability: 4%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 84°F
  • Feels like:
    84°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph WNW
  • Pressure: 29.88"Hg
  • Humidity: 42%
  • Precip. probability: 2%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 82°F
  • Feels like:
    84°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph WNW
  • Pressure: 29.88"Hg
  • Humidity: 44%
  • Precip. probability: 18%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 81°F
  • Feels like:
    81°F
Sunny
Sunny
  • Wind: 7mph WSW
  • Pressure: 29.91"Hg
  • Humidity: 51%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 8:30 pm
10 pm
  • 77°F
  • Feels like:
    77°F
Clear
Clear
  • Wind: 6mph SW
  • Pressure: 29.91"Hg
  • Humidity: 55%
  • Precip. probability: 3%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, weather will be unstable, and a mix of cloudy, wet, thunderstorm-prone and bright weather is predicted.
With minimal precipitation of 0.04", rainfall is predicted from 2 am to 4 am, and from 6 am to 8 am.
The temperature will be between a minimum of 68°F and a maximum of 84.2°F. The hottest part of the day will be at 4 pm and 5 pm.
The maximum is expected to resemble July's average high of 80.8°F rather than June's. The lowest temperature is also more in line with July's average minimum of 67.1°F than the usual minimum of 61.5°F in June.
Updated: Jun 18, 2025 @ 18:49:25 UTC
Published by: Weather U.S. | About Us
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Weather Forecasting & Climate
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