Weather forecast for todayGreenville, IL

Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

Weather forecast for today

Current condition 5:03 am CDT

  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 0mphW 270°
  • Humidity: 94%
  • Dewpoint: 41°F
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
At the moment, the conditions remain clear, with no sign of cloud cover.
The temperature is a brisk 42.8°F. The current temperature is near the lowest predicted 44.6°F for today.

Wednesday Oct 21, 2026

  • 75°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphWNW 283°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:13 am CDT
  • Sunset: 6:11 pm CDT
  • ▼
Today, in Greenville, a sun-drenched sky is anticipated.
The highest daytime temperature will touch a temperate 75.2°F, creating a significant contrast with the expected nighttime low of a brisk 44.6°F.
The warmer conditions bring a maximum of 75.2°F, more representative of September than October.
Sunrise will be at 7:13 am and sunset at 6:11 pm; the daylight will last for 10h and 58min.

Hourly overview

Hourly temperatures

Warmest period: 2 pm - 4 pm 73°C.
Coldest hour: 6 am 43°C.

Chance of precipitation

Highest chance: 12 am 3%.

Hourly weather forecast

  • 6 am
  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 0mphN 0°
  • Humidity: 92%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:13 am
  • 8 am
  • 45°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 0mphN 0°
  • Humidity: 91%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphESE 118°
  • Humidity: 60%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphS 184°
  • Humidity: 40%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphSW 224°
  • Humidity: 32%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphW 265°
  • Humidity: 30%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphW 266°
  • Humidity: 41%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:11 pm
  • 8 pm
  • 59°F
  • Feels like:
    59°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 0mphNNW 328°
  • Humidity: 66%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 0mphN 358°
  • Humidity: 77%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, mainly sunny weather and a cloudless sky are anticipated.
The temperature will be between a minimum of 42.8°F and a maximum of 75.2°F. The warmest part of the day is anticipated around 3 pm.
The forecasted maximum is more resembling September's typical high of 77.9°F than the average for October. The lowest temperature is expected to be a few degrees lower than the average minimum in October, typically 48.7°F.
Updated: Oct 21, 2026 @ 10:03:49 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

At 5:03 am CDT, the temperature is 42.8°F.

Today, sunny skies and pleasant visibility are expected.

Today, the maximum temperature will be 75.2°F, while the minimum temperature will be 44.6°F.
The maximum temperature will be significantly higher than the average highest temperature of 65.3°F in October. The lowest temperature will be relatively lower than the average low of 48.7°F.

On Wednesday, in Greenville, sunrise will be at 7:13 am and sunset at 6:11 pm (CDT).

Today, the daylight will last for 10h and 58min.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

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Greenville, Illinois, USA

  • en: Greenville, Illinois, USA
  • es: Greenville, Illinois, EE.UU.
  • hr: Grinvil, Ilinois, SAD
  • mk: Grinvil, Ilinois, SAD
  • sr: Grinvil, Ilinois, SAD
  • zh: 格林维尔, 伊利诺伊, 美国
  • Latitude: 38.892269°
  • Longitude: -89.413136°
  • Elevation: 623 ft
  • Current time: 5:03am CDT
  • Sunrise: 7:13 am CDT
  • Sunset: 6:11 pm CDT
  • Timezone: America/Chicago

Nearby Greenville, Illinois, USA

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