Weather forecast for 10 daysAltamont, IL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphSSE 157°
  • Humidity: 60%
  • UV index: 5
  • Sunrise: 7:07 am CDT
  • Sunset: 6:12 pm CDT
  • ▼
Today, on Sunday, October 18, sunshine and minimal clouds are in the outlook.
Dramatic temperature shifts from a high of a comfortable 64.4°F to a low of an icy 37.4°F are predicted.
October's standard high of 65.1°F is predicted to be reached during the day.
Sunrise will be at 7:07 am and sunset at 6:12 pm; the daylight will last for 11h and 4min.

10-day overview

Daily temperatures

Warmest day: Sunday 25.10. 79°C.
Coldest day: today 64°C.

Chance of precipitation

Highest chance: Wednesday 6%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphSSE 157°
  • Humidity: 60%
  • UV index: 5
  • Sunrise: 7:07 am CDT
  • Sunset: 6:12 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 72°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphSSE 148°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:08 am CDT
  • Sunset: 6:10 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphENE 76°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:09 am CDT
  • Sunset: 6:09 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 75°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 2mphNE 49°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:10 am CDT
  • Sunset: 6:08 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 75°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphNE 47°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:12 am CDT
  • Sunset: 6:06 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 75°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphESE 107°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:13 am CDT
  • Sunset: 6:05 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 77°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSE 141°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:14 am CDT
  • Sunset: 6:04 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 79°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphS 190°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:15 am CDT
  • Sunset: 6:02 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 77°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphSSW 201°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:16 am CDT
  • Sunset: 6:01 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 77°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphSE 133°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:17 am CDT
  • Sunset: 6:00 pm CDT
  • ▼
Over the next ten days, a combination of sun-filled and cloud-filled weather is predicted.
Rainfall is not anticipated in Altamont in the upcoming period.
Noticeable swings in temperature are expected throughout the forecast window. The maximum temperature will vary between 64.4°F and 78.8°F, while the forecast minimum temperature falls between 37.4°F and 48.2°F.
The warmest day will be next Sunday, with a maximum of 78.8°F; today is the coldest day, with a maximum temperature of 64.4°F.
Updated: Oct 18, 2026 @ 08:56:22 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, uninterrupted sunshine is anticipated.

Today, the highest temperature will be 64.4°F, while the lowest temperature will be 37.4°F.
Today, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature will be noticeably lower than the average low of 48.6°F.

On Sunday, in Altamont, sunrise will be at 7:07 am and sunset at 6:12 pm (CDT).

In Altamont, today, there will be 11h and 4min of daylight.