Weather forecast for tomorrow
Johnston City, IL

Weather forecast for tomorrow

Friday, Jun 20.

Mostly Sunny
5:32 am

8:22 pm
CDT
Mostly Sunny
90°F / 75°F
  • Wind: 10mph SSW
  • Humidity: 64%
  • Precip. probability: 7%
  • Precipitation: 0"
  • UV index: 10
Tomorrow, predominantly sunny weather will make for pleasant outdoor conditions.
The highest temperature will be a hot 89.6°F, while the lowest forecasted temperature is a moderately hot 75.2°F.
The maximum heat index, which combines air temperature and relative humidity, is appraised at a steamy 100.4°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
Forecasts suggest the maximum temperature will be a couple of degrees higher than June's average of 84.6°F.
Sunrise will be at 5:32 am and sunset at 8:22 pm; tomorrow's daylight will last for 14h and 50min.

Frequently asked questions

What is the weather forecast for Johnston City for tomorrow?
On Friday, mainly sunny skies with just a few high clouds are anticipated.
What will be the highest temperature tomorrow in Johnston City?
Tomorrow, the maximum temperature will be 89.6°F, while the minimum temperature will be 75.2°F. The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is computed to be 100.4°F.
The maximum temperature will be a couple of degrees higher than the average highest temperature of 84.6°F in June. The lowest temperature will be also a couple of degrees higher than the average low of 66.6°F.
What time are sunrise and sunset tomorrow?
On Friday, in Johnston City, sunrise will be at 5:32 am and sunset at 8:22 pm (CDT).
How many hours of daylight will Johnston City have tomorrow?
In Johnston City, Illinois, the length of the day tomorrow will be 14h and 50min.

Hourly weather forecast

12 am
  • 70°F
  • Feels like:
    72°F
Clear
Clear
  • Wind: 1mph S
  • Pressure: 30"Hg
  • Humidity: 88%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 9mi
2 am
  • 68°F
  • Feels like:
    70°F
Clear
Clear
  • Wind: 1mph S
  • Pressure: 30"Hg
  • Humidity: 91%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 7mi
4 am
  • 66°F
  • Feels like:
    68°F
Clear
Clear
  • Wind: 2mph S
  • Pressure: 30"Hg
  • Humidity: 92%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 8mi
Sunrise: 5:32 am
6 am
  • 66°F
  • Feels like:
    68°F
Sunny
Sunny
  • Wind: 2mph S
  • Pressure: 30.03"Hg
  • Humidity: 93%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 9mi
8 am
  • 73°F
  • Feels like:
    75°F
Sunny
Sunny
  • Wind: 5mph S
  • Pressure: 30.03"Hg
  • Humidity: 85%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 81°F
  • Feels like:
    84°F
Sunny
Sunny
  • Wind: 8mph SSW
  • Pressure: 30.03"Hg
  • Humidity: 68%
  • Precip. probability: 2%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 84°F
  • Feels like:
    90°F
Sunny
Sunny
  • Wind: 9mph SSW
  • Pressure: 30.03"Hg
  • Humidity: 57%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 88°F
  • Feels like:
    91°F
Mostly Sunny
Mostly Sunny
  • Wind: 9mph SSW
  • Pressure: 30"Hg
  • Humidity: 55%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 88°F
  • Feels like:
    95°F
Sunny
Sunny
  • Wind: 9mph S
  • Pressure: 29.97"Hg
  • Humidity: 55%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 88°F
  • Feels like:
    93°F
Sunny
Sunny
  • Wind: 10mph S
  • Pressure: 29.94"Hg
  • Humidity: 57%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 82°F
  • Feels like:
    88°F
Sunny
Sunny
  • Wind: 6mph SSE
  • Pressure: 29.94"Hg
  • Humidity: 69%
  • Precip. probability: 4%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 8:22 pm
10 pm
  • 79°F
  • Feels like:
    84°F
Clear
Clear
  • Wind: 7mph S
  • Pressure: 29.94"Hg
  • Humidity: 77%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, on Friday, primarily sun-filled and occasionally gloomy weather is expected.
The temperature will vary between a minimum of 66.2°F and a maximum of 87.8°F. The feels-like temperature will be between the lowest temperature of 68°F and the highest temperature of 95°F. The hottest part of the day will be from 2 pm to 6 pm.
The highest temperature will be a few degrees higher than June's average maximum of 84.6°F. The minimum temperature will be more resembling July's average low of 68.5°F than June's typical 66.6°F.
Updated: Jun 19, 2025 @ 13:02:58 UTC
Published by: Weather U.S. | About Us
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