Weather forecast for tomorrowHarmon, IL

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 14mphSSW 198°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:14 am CDT
  • Sunset: 6:12 pm CDT
  • ▼
Tomorrow, sunny skies are also in store, with excellent visibility.
Significant variations in temperature are forecasted, peaking at a comfortable 66.2°F and dropping to a low of a wintry 39.2°F.
The highest temperature for tomorrow is forecasted to be a few degrees higher than the average October temperature of 60.6°F.
Sunrise will be at 7:14 am and sunset at 6:12 pm; tomorrow's daylight will last for 10h and 58min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 39°C.

Chance of precipitation

Highest chance: 6 am 3%.

Hourly weather forecast

  • 12 am
  • 41°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSSW 191°
  • Humidity: 73%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 41°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSSW 197°
  • Humidity: 76%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 39°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSSW 194°
  • Humidity: 77%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 39°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphS 191°
  • Humidity: 78%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:14 am
  • 8 am
  • 41°F
  • Feels like:
    37°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphSSW 193°
  • Humidity: 76%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 52°F
  • Feels like:
    48°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphSSW 198°
  • Humidity: 57%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 61°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 13mphSSW 201°
  • Humidity: 43%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphSSW 204°
  • Humidity: 39%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphSSW 196°
  • Humidity: 39%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphS 181°
  • Humidity: 45%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:12 pm
  • 8 pm
  • 54°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphS 177°
  • Humidity: 57%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphS 180°
  • Humidity: 67%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, sunshine is expected.
The temperature will be between the lowest temperature of 39.2°F and the highest temperature of 64.4°F. The warmest part of the day will be from 2 pm to 4 pm.
Tomorrow, the temperature is expected to be a few degrees higher than October's normal maximum of 60.6°F. Tomorrow, the low will be also relatively lower than the usual October value of 44.6°F.
Updated: Oct 17, 2026 @ 17:34:58 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, skies are expected to be clear and full of sunshine.

Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 39.2°F.
The maximum temperature will be slightly warmer than the average highest temperature of 60.6°F in October. Tomorrow, the lowest temperature will be also slightly cooler than the average low temperature.

On Sunday, in Harmon, sunrise will be at 7:14 am and sunset at 6:12 pm (CDT).

Tomorrow, the daylight will last for 10h and 58min.