Weather forecast for 10 daysOlney, IL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSE 144°
  • Humidity: 51%
  • UV index: 5
  • Sunrise: 7:04 am CDT
  • Sunset: 6:10 pm CDT
  • ▼
Tomorrow, on Sunday, expect consistent sunshine and open skies.
The peak daytime temperature will touch a breezy 66.2°F, while the nighttime temperature will descend to an icy 37.4°F.
October's typical peak of 65.8°F is forecasted to be mirrored in the day’s high.
Sunrise will be at 7:04 am and sunset at 6:10 pm; tomorrow's daylight will last for 11h and 5min.

10-day overview

Daily temperatures

Warmest day: Sunday 25.10. 81°C.
Coldest day: tomorrow 66°C.

Chance of precipitation

Highest chance: today - Monday 5%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 37°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphESE 113°
  • Humidity: 86%
  • UV index: 0
  • Sunrise: 7:03 am CDT
  • Sunset: 6:11 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSE 144°
  • Humidity: 51%
  • UV index: 5
  • Sunrise: 7:04 am CDT
  • Sunset: 6:10 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 72°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphESE 102°
  • Humidity: 49%
  • UV index: 5
  • Sunrise: 7:05 am CDT
  • Sunset: 6:08 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 3mphNE 52°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:06 am CDT
  • Sunset: 6:07 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 77°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphNE 46°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:07 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 75°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphNE 40°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:08 am CDT
  • Sunset: 6:04 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 77°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphE 84°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:09 am CDT
  • Sunset: 6:03 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 77°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphESE 118°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:11 am CDT
  • Sunset: 6:01 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 81°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphS 188°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:12 am CDT
  • Sunset: 6:00 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 79°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphNNE 13°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:13 am CDT
  • Sunset: 5:59 pm CDT
  • ▼
Ten-day trends indicate that a combination of bright and dull weather is anticipated.
Rain is not predicted in Olney in the upcoming period.
Temperature variation will be noticeable in the coming days. The temperature is expected to swing from 66.2°F up to 80.6°F, while the lowest temperature will be between 37.4°F and 48.2°F.
Next Sunday is expected to be the warmest, reaching up to 80.6°F; with the highest temperature of 66.2°F, Sunday will be the coldest day.
Updated: Oct 18, 2026 @ 02:19:58 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Olney, the outlook remains bright and sunny.

Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 37.4°F.
The maximum temperature tomorrow will be in line with the average highest temperature in October. The lowest temperature tomorrow will be noticeably lower than the average low of 49.3°F.

On Sunday, in Olney, sunrise will be at 7:04 am and sunset at 6:10 pm (CDT).

In Olney, Illinois, the length of the day tomorrow will be 11h and 5min.