Weather forecast for tomorrow
Greenville, IL

Weather forecast for tomorrow

Friday, Jun 20.

Partly Cloudy
5:30 am

8:27 pm
CDT
Partly Cloudy
90°F / 75°F
  • Wind: 12mph S
  • Humidity: 62%
  • Precip. probability: 7%
  • Precipitation: 0"
  • UV index: 9
Tomorrow, on Friday, June 20, partly cloudy skies will persist, making for a mix of sun and clouds.
Temperature span will be from a high of a humid 89.6°F to a low of a moderately hot 75.2°F.
The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is computed to be a sweltering 100.4°F. Note that heat index values are valued for light wind and location in the shade. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The expected high is higher and consistent with July's normal of 84.4°F rather than June's.
Sunrise will be at 5:30 am and sunset at 8:27 pm; tomorrow's daylight will last for 14h and 57min.

Frequently asked questions

What is the weather forecast for Greenville for tomorrow?
On Friday, in Greenville, intermittent cloud cover is expected, allowing for some sunshine.
What will be the highest temperature tomorrow?
Tomorrow, the maximum temperature will be 89.6°F, while the minimum temperature will be 75.2°F. The maximum heat index, which reflects the perceived temperature due to humidity levels, is calculated to be 100.4°F.
The highest temperature will be relatively higher than the average maximum of 82.9°F in June. The lowest temperature will be significantly higher than the average low of 65.8°F.
When are sunrise and sunset tomorrow?
On Friday, in Greenville, sunrise will be at 5:30 am and sunset at 8:27 pm (CDT).
How long will the day be tomorrow?
In Greenville, the length of the day tomorrow will be 14h and 57min.

Hourly weather forecast

12 am
  • 70°F
  • Feels like:
    70°F
Clear
Clear
  • Wind: 2mph SSW
  • Pressure: 29.97"Hg
  • Humidity: 85%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
2 am
  • 68°F
  • Feels like:
    70°F
Clear
Clear
  • Wind: 3mph SSW
  • Pressure: 30"Hg
  • Humidity: 88%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
4 am
  • 66°F
  • Feels like:
    68°F
Clear
Clear
  • Wind: 2mph SSW
  • Pressure: 30"Hg
  • Humidity: 89%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
Sunrise: 5:30 am
6 am
  • 66°F
  • Feels like:
    68°F
Sunny
Sunny
  • Wind: 4mph SSW
  • Pressure: 30"Hg
  • Humidity: 91%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 10mi
8 am
  • 72°F
  • Feels like:
    73°F
Sunny
Sunny
  • Wind: 6mph S
  • Pressure: 30"Hg
  • Humidity: 80%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 79°F
  • Feels like:
    82°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph S
  • Pressure: 30"Hg
  • Humidity: 67%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 84°F
  • Feels like:
    88°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph S
  • Pressure: 29.97"Hg
  • Humidity: 58%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 86°F
  • Feels like:
    90°F
Partly Cloudy
Partly Cloudy
  • Wind: 10mph SSW
  • Pressure: 29.97"Hg
  • Humidity: 53%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 88°F
  • Feels like:
    93°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph S
  • Pressure: 29.91"Hg
  • Humidity: 53%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 88°F
  • Feels like:
    93°F
Mostly Sunny
Mostly Sunny
  • Wind: 12mph S
  • Pressure: 29.88"Hg
  • Humidity: 56%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 84°F
  • Feels like:
    88°F
Mostly Sunny
Mostly Sunny
  • Wind: 10mph S
  • Pressure: 29.88"Hg
  • Humidity: 65%
  • Precip. probability: 3%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 8:27 pm
10 pm
  • 79°F
  • Feels like:
    84°F
Clear
Clear
  • Wind: 10mph S
  • Pressure: 29.91"Hg
  • Humidity: 76%
  • Precip. probability: 4%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, on Friday, a combination of clear and overcast weather is expected.
The temperature will vary between the lowest temperature of 66.2°F and the highest temperature of 87.8°F. The hottest part of the day will be from 3 pm to 6 pm.
The maximum is expected to resemble July's average high of 84.4°F rather than June's. Forecast models suggest a low also more close to July's typical minimum of 67.5°F than June's usual 65.8°F.
Updated: Jun 19, 2025 @ 13:48:16 UTC
Published by: Weather U.S. | About Us
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Weather Forecasting & Climate
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