Weather forecast for tomorrow
Tuesday, Jun 17.
6:39 am
8:29 pm
CDT
8:29 pm
CDT
Sunny / Wind
99°F / 79°F
- Wind: 21mph SSE
- Humidity: 57%
- Precip. probability: 7%
- Precipitation: 0"
- UV index: 11
On Tuesday, in Alton, sunny skies will be accompanied by moderate to strong winds.
The highest temperature will be a steamy 98.6°F, while the lowest predicted temperature is a warm 78.8°F.
The maximum heat index, which combines air temperature and relative humidity, is estimated at a searing 122°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
The high temperature is predicted to match June's standard maximum of 95.7°F.
Sunrise will be at 6:39 am and sunset at 8:29 pm; tomorrow's daylight will last for 13h and 50min.
The highest temperature will be a steamy 98.6°F, while the lowest predicted temperature is a warm 78.8°F.
The maximum heat index, which combines air temperature and relative humidity, is estimated at a searing 122°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
The high temperature is predicted to match June's standard maximum of 95.7°F.
Sunrise will be at 6:39 am and sunset at 8:29 pm; tomorrow's daylight will last for 13h and 50min.
Frequently asked questions
What is the weather forecast for Alton for tomorrow?
On Tuesday, sunny conditions will continue, along with strong breezes.
What will be the highest temperature tomorrow?
Tomorrow, the highest temperature will be 98.6°F, while the lowest temperature will be 78.8°F. The maximum heat index, which indicates how humid air affects the felt temperature, is evaluated at 122°F.
The maximum temperature will be in line with the average highest temperature of 95.7°F in June. The lowest temperature will be also in line with the average low of 76.8°F.
The maximum temperature will be in line with the average highest temperature of 95.7°F in June. The lowest temperature will be also in line with the average low of 76.8°F.
When are sunrise and sunset tomorrow?
On Tuesday, in Alton, sunrise will be at 6:39 am and sunset at 8:29 pm (CDT).
How many hours of daylight will Alton have tomorrow?
In Alton, the length of the day tomorrow will be 13h and 50min.
Hourly weather forecast
12 am
- 81°F
- Feels like:
86°F
Clear
- Wind: 9mph SE
- Pressure: 29.88"Hg
- Humidity: 84%
- Precip. probability: 2%
- Precipitation: 0"
- Visibility: 10mi
2 am
- 79°F
- Feels like:
86°F
Clear
- Wind: 10mph SE
- Pressure: 29.85"Hg
- Humidity: 85%
- Precip. probability: 2%
- Precipitation: 0"
- Visibility: 10mi
4 am
- 79°F
- Feels like:
84°F
Clear
- Wind: 9mph SE
- Pressure: 29.85"Hg
- Humidity: 88%
- Precip. probability: 3%
- Precipitation: 0"
- Visibility: 10mi
6 am
- 77°F
- Feels like:
82°F
Clear
- Wind: 9mph SSE
- Pressure: 29.85"Hg
- Humidity: 89%
- Precip. probability: 7%
- Precipitation: 0"
- Visibility: 10mi
Sunrise: 6:39 am
8 am
- 79°F
- Feels like:
84°F
Sunny
- Wind: 11mph SSE
- Pressure: 29.85"Hg
- Humidity: 83%
- Precip. probability: 5%
- Precipitation: 0"
- Visibility: 10mi
10 am
- 86°F
- Feels like:
93°F
Sunny
- Wind: 18mph SSE
- Pressure: 29.88"Hg
- Humidity: 65%
- Precip. probability: 1%
- Precipitation: 0"
- Visibility: 10mi
12 pm
- 91°F
- Feels like:
100°F
Sunny
- Wind: 19mph SSE
- Pressure: 29.85"Hg
- Humidity: 53%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
2 pm
- 95°F
- Feels like:
104°F
Sunny
- Wind: 19mph SSE
- Pressure: 29.83"Hg
- Humidity: 46%
- Precip. probability: 1%
- Precipitation: 0"
- Visibility: 10mi
4 pm
- 97°F
- Feels like:
106°F
Sunny / Wind
- Wind: 20mph SE
- Pressure: 29.8"Hg
- Humidity: 41%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
6 pm
- 95°F
- Feels like:
104°F
Sunny / Wind
- Wind: 21mph SE
- Pressure: 29.77"Hg
- Humidity: 43%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
8 pm
- 91°F
- Feels like:
99°F
Sunny / Wind
- Wind: 20mph SE
- Pressure: 29.77"Hg
- Humidity: 51%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
Sunset: 8:29 pm
10 pm
- 84°F
- Feels like:
91°F
Clear
- Wind: 17mph SE
- Pressure: 29.8"Hg
- Humidity: 65%
- Precip. probability: 2%
- Precipitation: 0"
- Visibility: 10mi
Tomorrow, sunshine is expected.
The temperature will vary between the lowest temperature of 77°F and the highest temperature of 96.8°F. The feels-like temperature will vary between a minimum of 82.4°F and a maximum of 105.8°F. The hottest part of the day will be at 4 pm and 5 pm.
The high temperature is expected to be similar to June's usual value of 95.7°F. The temperature low is forecasted to be also alike with the usual June value of 76.8°F.
The temperature will vary between the lowest temperature of 77°F and the highest temperature of 96.8°F. The feels-like temperature will vary between a minimum of 82.4°F and a maximum of 105.8°F. The hottest part of the day will be at 4 pm and 5 pm.
The high temperature is expected to be similar to June's usual value of 95.7°F. The temperature low is forecasted to be also alike with the usual June value of 76.8°F.
Updated: Jun 17, 2025 @ 02:41:48 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate