Weather forecast for todayHarrisburg, IL

Weather forecast for today

Current condition 12:09 am CDT

  • 48°F
  • Feels like:
    48°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 0mphW 260°
  • Humidity: 96%
  • Dewpoint: 48°F
  • Pressure: 30.22"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Harrisburg, currently, an expansive clear sky makes for a picture-perfect day.
The temperature is a brisk 48.2°F. The current temperature is far from today's maximum-forecasted 75.2°F.

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, skies are expected to be clear and full of sunshine.
Daytime will experience a high of a moderately hot 75.2°F, significantly differing from the forecasted night low of a frosty 42.8°F.
A high of 75.2°F is expected, which resembles September's climate average of 80.8°F more than October's 67.8°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: 100%
  • 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: 98%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 0mphE 90°
  • 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, bright and mostly sunny weather is expected.
The temperature will be between a minimum of 42.8°F and a maximum of 73.4°F. The warmest part of the day will be from 2 pm to 4 pm.
The temperature will feel more close to September's average high than the expected maximum for October. The expected low will be more close to what’s common in November than the current October average of 49.3°F.
Updated: Oct 23, 2026 @ 05:09:31 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 12:09 am CDT is 48.2°F.

Today, in Harrisburg, sunshine will likely continue with scattered clouds at most.

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