Weather forecast for tomorrowArlington, IL

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 12mphSSW 197°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:12 am CDT
  • Sunset: 6:11 pm CDT
  • ▼
On Sunday, in Arlington, sunshine and minimal clouds are in the outlook.
A stark contrast will be observed between the day's peak temperature of an enjoyable 64.4°F and the night's low of a wintry 37.4°F.
October's typical peak of 61.2°F is predicted to be mirrored in the day’s high.
Sunrise will be at 7:12 am and sunset at 6:11 pm; tomorrow's daylight will last for 10h and 59min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 63°C.
Coldest hour: 6 am 37°C.

Chance of precipitation

Highest chance: 6 am 5%.

Hourly weather forecast

  • 12 am
  • 41°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSW 193°
  • Humidity: 79%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 39°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphSSW 196°
  • Humidity: 82%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphS 191°
  • Humidity: 85%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphS 191°
  • Humidity: 83%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:12 am
  • 8 am
  • 41°F
  • Feels like:
    36°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphSSW 194°
  • Humidity: 81%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 50°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphSSW 199°
  • Humidity: 58%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 57°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphSSW 201°
  • Humidity: 44%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphSSW 201°
  • Humidity: 38%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphSSW 195°
  • Humidity: 37%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphS 183°
  • Humidity: 45%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:11 pm
  • 8 pm
  • 50°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphS 178°
  • Humidity: 61%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphS 180°
  • Humidity: 72%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, clear skies and sunny weather are expected.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 62.6°F. The warmest part of the day will be at 3 pm and 4 pm.
Tomorrow, the forecasted high aligns similar to the average peak in October. Tomorrow, the overnight low is more consistent with November's usual minimum of 33.4°F than October's 45.3°F.
Updated: Oct 18, 2026 @ 00:13:56 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Arlington, a sun-drenched sky is anticipated.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 37.4°F.
Tomorrow, the maximum temperature will be in line with the average highest temperature in October. Tomorrow, the lowest temperature will be slightly cooler than the average low temperature.

On Sunday, in Arlington, sunrise will be at 7:12 am and sunset at 6:11 pm (CDT).

In Arlington, Illinois, the length of the day tomorrow will be 10h and 59min.