Weather forecast for todayIlliopolis, IL

Weather forecast for today

Current condition 8:10 am CDT

  • 39°F
  • Feels like:
    36°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 5mphS 170°
  • Humidity: 78%
  • Dewpoint: 34°F
  • Pressure: 30.51"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
At the moment, in Illiopolis, a bright and warm day is unfolding.
The temperature is a wintry 39.2°F, the feels-like temperature is slightly different, assessed at an icy 35.6°F. The current temperature is almost at the minimum-expected 37.4°F for today.

Sunday Oct 18, 2026

  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphS 180°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:10 am CDT
  • Sunset: 6:13 pm CDT
  • ▼
Today, in Illiopolis, expect sunny weather with a crisp, clear sky.
Temperature readings are forecasted to span from a high of an enjoyable 64.4°F to a low of a wintry 37.4°F.
Today, the predicted peak temperature is expected to mirror October's average high of 63.9°F.
Sunrise was at 7:10 am and sunset will be at 6:13 pm; the daylight will last for 11h and 2min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 9 am 45°C.

Chance of precipitation

Highest chance: 11 pm 3%.

Hourly weather forecast

  • 9 am
  • 45°F
  • Feels like:
    41°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphS 177°
  • Humidity: 65%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 10 am
  • 50°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphS 183°
  • Humidity: 55%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 11 am
  • 55°F
  • Feels like:
    52°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphS 184°
  • Humidity: 48%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphS 186°
  • Humidity: 43%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 1 pm
  • 61°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphS 187°
  • Humidity: 39%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphS 184°
  • Humidity: 36%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 3 pm
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphS 183°
  • Humidity: 34%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphS 181°
  • Humidity: 34%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphS 175°
  • Humidity: 35%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSE 165°
  • Humidity: 42%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:13 pm
  • 7 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphSSE 158°
  • Humidity: 54%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 50°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphSSE 150°
  • Humidity: 63%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 48°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSSE 153°
  • Humidity: 68%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSSE 154°
  • Humidity: 73%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 46°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 5mphSSE 163°
  • Humidity: 75%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, bright and mostly sunny weather is expected.
The temperature will be between the highest temperature of 64.4°F and the lowest temperature of 44.6°F. The warmest part of the day will be at 3 pm and 4 pm.
Today, the maximum will be close to October's typical high. The minimum temperature will be more comparable to November's average low of 36°F than October's typical 47.8°F.
Updated: Oct 18, 2026 @ 13:10:17 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 8:10 am CDT is 39.2°F.

On Sunday, conditions remain stable and sunny, with little cloud presence.

Today, the maximum temperature will be 64.4°F, while the minimum temperature will be 37.4°F.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature today will be uncommonly lower than the average low of 47.8°F.

On Sunday, in Illiopolis, sunrise was at 7:10 am and sunset will be at 6:13 pm (CDT).

Today, the daylight will last for 11h and 2min.