Weather forecast for todayHarristown, IL

Weather forecast for today

Current condition 12:22 pm CDT

  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 3mphSW 230°
  • Humidity: 37%
  • Dewpoint: 45°F
  • Pressure: 30.25"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
At the moment, in Harristown, the weather is bright and sunny.
The temperature is a delightful 71.6°F. The current temperature is nearly at the maximum of today's 75.2°F.

Wednesday Oct 21, 2026

  • 75°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphWSW 244°
  • Humidity: 35%
  • UV index: 4
  • Sunrise: 7:13 am CDT
  • Sunset: 6:08 pm CDT
  • ▼
Today, in Harristown, sunshine is forecasted under mostly clear skies.
A stark contrast will be observed between the day's peak temperature of a warm 75.2°F and the night's low of a frosty 44.6°F.
The predicted high will feel warmer, consistent with September's climate average of 77°F.
Sunrise was at 7:13 am and sunset will be at 6:08 pm; the daylight will last for 10h and 55min.

Hourly overview

Hourly temperatures

Warmest period: 2 pm - 3 pm 75°C.
Coldest hour: 10 pm 54°C.

Chance of precipitation

Highest chance: 6 pm - 10 pm 1%.

Hourly weather forecast

  • 1 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphWSW 237°
  • Humidity: 35%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 75°F
  • Feels like:
    75°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphSW 217°
  • Humidity: 32%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 3 pm
  • 75°F
  • Feels like:
    75°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphWSW 240°
  • Humidity: 30%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphWSW 258°
  • Humidity: 32%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphWSW 257°
  • Humidity: 34%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphWSW 254°
  • Humidity: 44%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:08 pm
  • 7 pm
  • 63°F
  • Feels like:
    63°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphWNW 297°
  • Humidity: 54%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 57°F
  • Feels like:
    57°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphN 1°
  • Humidity: 65%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 55°F
  • Feels like:
    55°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphNE 40°
  • Humidity: 68%
  • 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: 1mphNNE 24°
  • Humidity: 71%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphENE 59°
  • Humidity: 74%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Harristown, sunny conditions are likely to prevail.
The temperature will vary between the lowest temperature of 53.6°F and the highest temperature of 75.2°F. The warmest part of the day will be at 2 pm and 3 pm.
The highest temperature is more in line with September's average maximum of 77°F than October's usual of 64°F. The temperature low is forecasted to be in line with the usual October value of 48°F.
Updated: Oct 21, 2026 @ 17:22:10 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 12:22 pm CDT is 71.6°F.

On Wednesday, in Harristown, sun-filled conditions are expected to persist.

Today, the highest temperature will be 75.2°F, while the lowest temperature will be 44.6°F.
The highest temperature will be significantly 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 was at 7:13 am and sunset will be at 6:08 pm (CDT).

Today, the daylight will last for 10h and 55min.