Weather forecast for 10 days
Alton, IL

Weather forecast for the weekend

Saturday, Jun 21.

Sunny
5:34 am

8:31 pm
CDT
Sunny
97°F / 77°F
  • Wind: 15mph SSW
  • Humidity: 58%
  • Precip. probability: 6%
  • Precipitation: 0"
  • UV index: 9
On Saturday, in Alton, the outlook remains bright and sunny.
Rainfall is not forecasted. The temperature is predicted to vary between a sizzling 96.8°F and a temperate 77°F.
On Saturday, the higher temperature fits better with the expected maximum in July than June.
Sunrise will be at 5:34 am and sunset at 8:31 pm; the daylight will last for 14h and 57min.

Sunday, Jun 22.

Sunny
5:34 am

8:31 pm
CDT
Sunny
97°F / 75°F
  • Wind: 12mph SSW
  • Humidity: 56%
  • Precip. probability: 5%
  • Precipitation: 0"
  • UV index: 9
On Sunday, in Alton, sunny skies are in store, with excellent visibility.
Rainfall is not predicted. The maximum temperature will be a steamy 96.8°F, while the minimum anticipated temperature is a warm 75.2°F.
The weather on Sunday is hotter, with a maximum expected near 85.3°F - more like July than June.
Sunrise will be at 5:34 am and sunset at 8:31 pm; the daylight will last for 14h and 57min.

Frequently asked questions

What is the weather forecast for Alton for Saturday?
On Saturday, the forecast calls for abundant sunshine.
Will it rain on Saturday?
No, it will not rain on Saturday.
What will be the maximum temperature on Saturday?
On Saturday, the highest temperature will be 96.8°F, while the lowest temperature will be 77°F.
What is the weather forecast for Alton for Sunday?
On Sunday, sun-filled conditions are expected to persist.
Will it rain on Sunday in Alton?
No, it will not rain on Sunday.
What will be the maximum temperature on Sunday?
On Sunday, the maximum temperature will be 96.8°F, while the minimum temperature will be 75.2°F.
What is the weather forecast for Alton for the next ten days?
In Alton, weather will be unstable, and a combination of gloomy, clear, turbulent and damp weather is forecasted for the next ten days.
Will it rain in the next ten days?
Rainfall is predicted for Wednesday, next Thursday and Friday in Alton. With light precipitation of 0.2", next Thursday will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will range between 86°F and 96.8°F, while the minimum temperature will be between 66.2°F and 77°F.
Including the humidity's impact, the maximum feel-like temperature will range between 91.4°F and 116.6°F.
What will be the hottest and the coldest days?
The hottest days will be Saturday through Monday, with a maximum of 96.8°F. Tomorrow will be the coldest day, with a maximum temperature of 86°F.

Long-term weather forecast

WedJun 18.
  • min.
  • 66°F
Showers
Showers
  • Wind: 7mph W
  • Humidity: 91%
  • UV index: 0
  • Precip. probability: 79%
  • Precipitation: 0.04"
  • 5:33 am 8:30 pm CDT
ThuJun 19.
  • 86°F
  • 66°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph WNW
  • Humidity: 63%
  • UV index: 9
  • Precip. probability: 13%
  • Precipitation: 0"
  • 5:33 am 8:30 pm CDT
FriJun 20.
  • 91°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Wind: 12mph S
  • Humidity: 58%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 5:34 am 8:30 pm CDT
SatJun 21.
  • 97°F
  • 77°F
Sunny
Sunny
  • Wind: 15mph SSW
  • Humidity: 58%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 5:34 am 8:31 pm CDT
SunJun 22.
  • 97°F
  • 75°F
Sunny
Sunny
  • Wind: 12mph SSW
  • Humidity: 56%
  • UV index: 9
  • Precip. probability: 5%
  • Precipitation: 0"
  • 5:34 am 8:31 pm CDT
MonJun 23.
  • 97°F
  • 77°F
Mostly Sunny
Mostly Sunny
  • Wind: 10mph SSW
  • Humidity: 56%
  • UV index: 9
  • Precip. probability: 9%
  • Precipitation: 0"
  • 5:34 am 8:31 pm CDT
TueJun 24.
  • 95°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Wind: 8mph SSW
  • Humidity: 59%
  • UV index: 9
  • Precip. probability: 18%
  • Precipitation: 0"
  • 5:35 am 8:31 pm CDT
WedJun 25.
  • 93°F
  • 73°F
Partly Cloudy
Partly Cloudy
  • Wind: 8mph SSW
  • Humidity: 60%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0"
  • 5:35 am 8:31 pm CDT
ThuJun 26.
  • 90°F
  • 72°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 8mph SW
  • Humidity: 64%
  • UV index: 9
  • Precip. probability: 35%
  • Precipitation: 0.2"
  • 5:35 am 8:31 pm CDT
FriJun 27.
  • 88°F
  • 72°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 9mph WSW
  • Humidity: 66%
  • UV index: 9
  • Precip. probability: 32%
  • Precipitation: 0.12"
  • 5:36 am 8:31 pm CDT
The next ten days will bring unstable conditions, and a mix of gloomy, clear, turbulent and rain-soaked weather is expected.
Rainfall is expected on Wednesday, next Thursday and Friday.
In the upcoming days, the highest temperature will vary between 86°F and 96.8°F, while the low temperature range extends from 66.2°F to 77°F.
With a maximum temperature of 96.8°F, Saturday through Monday will be the hottest days; with the highest temperature of 86°F, Thursday will be the coldest day.
Taking the humidity into consideration, the maximum feel-like temperature may increase vastly and vary between a tropical 91.4°F and a dangerously hot 116.6°F.
Updated: Jun 19, 2025 @ 02:52:37 UTC
Published by: Weather U.S. | About Us
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