Weather forecast for 10 daysUnion, IL

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 57°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphSW 226°
  • Humidity: 38%
  • UV index: 4
  • Sunrise: 7:09 am CDT
  • Sunset: 6:09 pm CDT
  • ▼
On Saturday, in Union, the outlook remains bright and sunny.
The temperature is forecasted to oscillate between a maximum of a mild 57.2°F and a minimum of a wintry 39.2°F.
Expect the maximum temperature to remain consistent with the typical October high of 58.8°F.
Sunrise was at 7:09 am and sunset will be at 6:09 pm; the daylight will last for 11h and 0min.

Sunday Oct 18, 2026

  • 64°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 16mphSSW 206°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:10 am CDT
  • Sunset: 6:07 pm CDT
  • ▼
Tomorrow, in Union, conditions will remain bright with clear skies.
The temperature will fluctuate from a high of an enjoyable 64.4°F to a low of a wintry 39.2°F.
The forecasted maximum temperature will be relatively higher than October's typical high of 58.8°F.
Sunrise will be at 7:10 am and sunset at 6:07 pm; tomorrow's daylight will last for 10h and 57min.

10-day overview

Daily temperatures

Warmest day: Thursday 73°C.
Coldest day: today 57°C.

Chance of precipitation

Highest chance: Monday 26.10. 9%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 57°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphSW 226°
  • Humidity: 38%
  • UV index: 4
  • Sunrise: 7:09 am CDT
  • Sunset: 6:09 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 64°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 16mphSSW 206°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:10 am CDT
  • Sunset: 6:07 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphSSW 196°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:11 am CDT
  • Sunset: 6:06 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphSE 130°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:13 am CDT
  • Sunset: 6:04 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 70°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 6mphS 189°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:14 am CDT
  • Sunset: 6:03 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 73°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphSE 146°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:15 am CDT
  • Sunset: 6:01 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 7mphESE 123°
  • Humidity: 61%
  • UV index: 3
  • Sunrise: 7:16 am CDT
  • Sunset: 6:00 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 72°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphSSE 149°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:17 am CDT
  • Sunset: 5:58 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 72°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 9mphSSW 205°
  • Humidity: 56%
  • UV index: 3
  • Sunrise: 7:19 am CDT
  • Sunset: 5:57 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 7mphNE 54°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 7:20 am CDT
  • Sunset: 5:55 pm CDT
  • ▼
Across the following ten days, a combination of sunny and gloomy weather is forecasted.
Rain is not expected in Union in the upcoming days.
Temperature fluctuation will be noticeable in the coming days. The maximum temperature will vary between 57.2°F and 73.4°F, while nighttime temperatures are expected to vary from 39.2°F to 50°F.
Thursday is expected to be the warmest, reaching up to 73.4°F; today is the coldest day, with a maximum temperature of 57.2°F.
Updated: Oct 17, 2026 @ 17:15:43 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, expect sunny weather with a crisp, clear sky.

Today, the highest temperature will be 57.2°F, while the lowest temperature will be 39.2°F.
Today, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature will be a few degrees lower than the average low of 43.2°F.

On Saturday, in Union, sunrise was at 7:09 am and sunset will be at 6:09 pm (CDT).

In Union, the length of the day today will be 11h and 0min.

Tomorrow, sunny skies and pleasant visibility are expected.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 39.2°F.
The highest temperature tomorrow will be slightly warmer than the average maximum temperature in October. The lowest temperature will be also moderately lower than the average low of 43.2°F.

On Sunday, in Union, sunrise will be at 7:10 am and sunset at 6:07 pm (CDT).

In Union, the length of the day tomorrow will be 10h and 57min.