Weather forecast for todayHarrisburg, IL

Weather forecast for today

Current condition 12:23 am CDT

  • 48°F
  • Feels like:
    48°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 0mphW 260°
  • Humidity: 96%
  • Dewpoint: 48°F
  • Pressure: 30.23"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
In Harrisburg, currently, the sky is a wide-open expanse of clear blue.
The temperature is a chilly 48.2°F. The current temperature is far from the maximum of 75.2°F predicted for today.

Friday Oct 23, 2026

  • 75°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 6mphE 94°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:10 am CDT
  • Sunset: 6:06 pm CDT
  • ▼
Today, in Harrisburg, expect bright skies and plenty of sunshine.
A notable disparity in temperature is expected, reaching up to a maximum of a moderately hot 75.2°F and falling to a minimum of a chilly 42.8°F.
This October day will feature warmer weather, consistent with September's average of 80.8°F.
Sunrise will be at 7:10 am and sunset at 6:06 pm; the daylight will last for 10h and 56min.

Hourly overview

Hourly temperatures

Warmest hour: 4 pm 73°C.
Coldest hour: 7 am 43°C.

Chance of precipitation

Highest chance: 7 am 4%.

Hourly weather forecast

  • 2 am
  • 46°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 0mphN 0°
  • Humidity: 96%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 46°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 0mphE 97°
  • Humidity: 97%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 0mphE 87°
  • Humidity: 100%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:10 am
  • 8 am
  • 46°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 0mphESE 107°
  • Humidity: 99%
  • Pressure: 30.27"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 10 am
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphE 91°
  • Humidity: 65%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphESE 105°
  • Humidity: 39%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphE 94°
  • Humidity: 34%
  • 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: 6mphE 95°
  • Humidity: 33%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphE 81°
  • Humidity: 44%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:06 pm
  • 8 pm
  • 57°F
  • Feels like:
    57°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphE 82°
  • Humidity: 68%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphE 93°
  • Humidity: 79%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Harrisburg, mostly cloudless and sunny weather is anticipated.
The temperature will vary between the lowest temperature of 42.8°F and the highest temperature of 73.4°F. The warmest part of the day will be from 2 pm to 4 pm.
The maximum temperature will align more closely with September's average high of 80.8°F than with October's 67.8°F. Forecast models suggest a low more similar to November's typical minimum of 38.7°F than October's usual 49.3°F.
Updated: Oct 23, 2026 @ 05:23:25 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

At 12:23 am CDT, the temperature is 48.2°F.

Today, expect sunny weather with a crisp, clear sky.

Today, the maximum temperature will be 75.2°F, while the minimum temperature will be 42.8°F.
The highest temperature will be a couple of degrees higher than the average maximum of 67.8°F in October. The lowest temperature will be also a couple of degrees lower than the average low of 49.3°F.

On Friday, in Harrisburg, sunrise will be at 7:10 am and sunset at 6:06 pm (CDT).

Today, the daylight will last for 10h and 56min.