Weather forecast for tomorrow
Alton, IL

Weather forecast for tomorrow

Monday, May 5.

Cloudy
5:56 am

7:58 pm
CDT
Cloudy
63°F / 46°F
  • Wind: 8mph N
  • Humidity: 68%
  • Precip. probability: 18%
  • Precipitation: 0"
  • UV index: 5
Tomorrow, on Monday, thick clouds will dominate the sky.
The temperature will fluctuate from a high of a breezy 62.6°F to a low of a frosty 46.4°F.
Expect temperatures to match April's average maximum of 64.6°F rather than May's 74.1°F.
Sunrise will be at 5:56 am and sunset at 7:58 pm; tomorrow's daylight will last for 14h and 2min.

Frequently asked questions

What is the weather forecast for Alton for tomorrow?
On Monday, a mostly cloudy day is ahead.
What will be the maximum temperature tomorrow?
Tomorrow, the maximum temperature will be 62.6°F, while the minimum temperature will be 46.4°F.
The maximum temperature will be noticeably lower than the average highest temperature of 74.1°F in May. The lowest temperature will be also significantly lower than the average low of 56.8°F.
What time are sunrise and sunset tomorrow?
On Monday, in Alton, sunrise will be at 5:56 am and sunset at 7:58 pm (CDT).
How long will the day be tomorrow?
Tomorrow in Alton, the daylight will last for 14h and 2min.

Hourly weather forecast

12 am
  • 52°F
  • Feels like:
    50°F
Cloudy
Cloudy
  • Wind: 4mph N
  • Pressure: 29.91"Hg
  • Humidity: 75%
  • Precip. probability: 4%
  • Precipitation: 0"
  • Visibility: 10mi
2 am
  • 50°F
  • Feels like:
    50°F
Cloudy
Cloudy
  • Wind: 3mph NNW
  • Pressure: 29.91"Hg
  • Humidity: 77%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 8mi
4 am
  • 50°F
  • Feels like:
    50°F
Cloudy
Cloudy
  • Wind: 4mph NNW
  • Pressure: 29.91"Hg
  • Humidity: 79%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 9mi
Sunrise: 5:56 am
6 am
  • 50°F
  • Feels like:
    48°F
Cloudy
Cloudy
  • Wind: 5mph NNW
  • Pressure: 29.91"Hg
  • Humidity: 79%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 9mi
8 am
  • 52°F
  • Feels like:
    50°F
Cloudy
Cloudy
  • Wind: 7mph N
  • Pressure: 29.94"Hg
  • Humidity: 77%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 55°F
  • Feels like:
    52°F
Cloudy
Cloudy
  • Wind: 8mph NNW
  • Pressure: 29.97"Hg
  • Humidity: 74%
  • Precip. probability: 4%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 59°F
  • Feels like:
    57°F
Cloudy
Cloudy
  • Wind: 8mph N
  • Pressure: 29.97"Hg
  • Humidity: 66%
  • Precip. probability: 14%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 61°F
  • Feels like:
    61°F
Cloudy
Cloudy
  • Wind: 7mph N
  • Pressure: 29.94"Hg
  • Humidity: 62%
  • Precip. probability: 10%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 61°F
  • Feels like:
    61°F
Cloudy
Cloudy
  • Wind: 6mph N
  • Pressure: 29.94"Hg
  • Humidity: 62%
  • Precip. probability: 3%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 63°F
  • Feels like:
    63°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 5mph NNW
  • Pressure: 29.94"Hg
  • Humidity: 61%
  • Precip. probability: 18%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 7:58 pm
8 pm
  • 59°F
  • Feels like:
    59°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 3mph NNW
  • Pressure: 29.97"Hg
  • Humidity: 72%
  • Precip. probability: 9%
  • Precipitation: 0"
  • Visibility: 10mi
10 pm
  • 55°F
  • Feels like:
    55°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 2mph NNE
  • Pressure: 29.97"Hg
  • Humidity: 85%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, gray skies are likely.
The temperature will be between a minimum of 50°F and a maximum of 62.6°F. The warmest part of the day will be at 5 pm and 6 pm.
The maximum temperature will align more closely with April's average high of 64.6°F than with May's 74.1°F. The expected low will be also more in line with what’s typical in April than in May.
Updated: May 4, 2025 @ 15:37:00 UTC
Published by: Weather U.S. | About Us
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Weather Forecasting & Climate
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