Weather forecast for todayHarristown, IL

Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

Weather forecast for today

Current condition 5:48 am CDT

  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 0mphNNW 340°
  • Humidity: 89%
  • Dewpoint: 39°F
  • Pressure: 30.28"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Harristown, at the moment, a cloudless sky and calm conditions create ideal weather.
The temperature is a brisk 42.8°F. The current temperature is near the lowest anticipated 44.6°F for today.

Wednesday Oct 21, 2026

  • 75°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 3mphSSW 207°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:13 am CDT
  • Sunset: 6:08 pm CDT
  • ▼
Today, in Harristown, sunshine and minimal clouds are in the outlook.
Temperatures are expected to move from a peak of a moderately hot 75.2°F to a low of a frosty 44.6°F.
Weather conditions lean warmer, with the temperature tracking September's average high of 77°F.
Sunrise will be at 7:13 am and sunset at 6:08 pm; the daylight will last for 10h and 55min.

Hourly overview

Hourly temperatures

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

Chance of precipitation

Highest chance: 2%.

Hourly weather forecast

  • 6 am
  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 0mphSE 127°
  • Humidity: 90%
  • 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: 1mphESE 116°
  • Humidity: 87%
  • 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: 2mphS 184°
  • Humidity: 59%
  • 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: 2mphSW 217°
  • Humidity: 43%
  • 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: 2mphSW 220°
  • Humidity: 33%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphW 271°
  • Humidity: 32%
  • 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: 2mphW 270°
  • Humidity: 43%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:08 pm
  • 8 pm
  • 59°F
  • Feels like:
    59°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphNNW 345°
  • Humidity: 63%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphNE 34°
  • Humidity: 72%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Harristown, mainly sunny weather and a cloudless sky are anticipated.
The temperature will be between the highest temperature of 73.4°F and the lowest temperature of 42.8°F. The warmest part of the day will be from 2 pm to 4 pm.
The highest temperature is more consistent with September's average maximum of 77°F than October's usual of 64°F. The minimum temperature will be consistent with October's average low of 48°F.
Updated: Oct 21, 2026 @ 10:48:47 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (5:48 am CDT) is 42.8°F.

On Wednesday, in Harristown, skies are expected to be clear and full of sunshine.

Today, the highest temperature will be 75.2°F, while the lowest temperature will be 44.6°F.
The highest temperature will be noticeably higher than the average maximum of 64°F in October. The lowest temperature will be in line with the average low of 48°F.

On Wednesday, in Harristown, sunrise will be at 7:13 am and sunset at 6:08 pm (CDT).

In Harristown, today, there will be 10h and 55min of daylight.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND

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Harristown, Illinois, USA

  • en: Harristown, Illinois, USA
  • es: Harristown, Illinois, EE.UU.
  • hr: Haristaun, Ilinois, SAD
  • mk: Haristaun, Ilinois, SAD
  • sr: Haristaun, Ilinois, SAD
  • zh: Harristown, 伊利诺伊, 美国
  • Latitude: 39.853928°
  • Longitude: -89.083970°
  • Elevation: 692 ft
  • Current time: 6:46am CDT
  • Sunrise: 7:13 am CDT
  • Sunset: 6:08 pm CDT
  • Timezone: America/Chicago

Nearby Harristown, Illinois, USA

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