Weather forecast for 10 daysAlton, IA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 68°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 18mphSSW 193°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:41 am CDT
  • Sunset: 6:36 pm CDT
  • ▼
On Sunday, in Alton, expect sunny weather with a crisp, clear sky.
Day and night temperatures will contrast sharply, ranging from a peak of a delightful 68°F to a low of a cold 39.2°F.
A high of 68°F is expected, which resembles September's climate average of 74.3°F more than October's 58.1°F.
Sunrise will be at 7:41 am and sunset at 6:36 pm; tomorrow's daylight will last for 10h and 55min.

10-day overview

Daily temperatures

Warmest day: Friday 77°C.
Minimum temperature: 66°C.

Chance of precipitation

Highest chance: Saturday 24.10. 24%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 41°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 16mphSSW 193°
  • Humidity: 67%
  • UV index: 0
  • Sunrise: 7:40 am CDT
  • Sunset: 6:38 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 68°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 18mphSSW 193°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:41 am CDT
  • Sunset: 6:36 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 9mphSSE 153°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:42 am CDT
  • Sunset: 6:35 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 48°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 14mphSSE 163°
  • Humidity: 61%
  • UV index: 4
  • Sunrise: 7:43 am CDT
  • Sunset: 6:33 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 73°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 10mphS 187°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:45 am CDT
  • Sunset: 6:32 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 75°F
  • 54°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 10mphSE 146°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:46 am CDT
  • Sunset: 6:30 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 77°F
  • 59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 19mphSSE 158°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:47 am CDT
  • Sunset: 6:29 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 73°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • Wind: 17mphS 182°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:48 am CDT
  • Sunset: 6:27 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 66°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 9mphNNW 346°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:50 am CDT
  • Sunset: 6:26 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 12mphSSE 161°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:51 am CDT
  • Sunset: 6:24 pm CDT
  • ▼
During the upcoming ten-day period, a combination of clear and overcast weather is expected.
With a 24% probability, rainfall is anticipated only on next Saturday. The precipitation will be minimal at 0.04".
In the upcoming days, the maximum temperature will range between 66.2°F and 77°F, while the lowest nightly temperature differences will be quite pronounced, as temperatures overnight will fluctuate from 39.2°F up to 59°F.
Friday is expected to be the warmest, reaching up to 77°F; Monday and next Sunday, with the highest temperature of 66.2°F, will be the coldest days.
Updated: Oct 18, 2026 @ 01:06:49 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, sunny conditions are expected to continue.

Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 39.2°F.
Tomorrow, the highest temperature will be notably higher than the average maximum of 58.1°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Alton, sunrise will be at 7:41 am and sunset at 6:36 pm (CDT).

Tomorrow, the daylight will last for 10h and 55min.