Weather forecast for 10 days
Alton, IL

On Saturday, in Alton, rainy weather and thunderstorms are expected in the afternoon.
Minimal precipitation is predicted for today. A notable disparity in temperature is anticipated, reaching up to a maximum of a moderately hot 82.4°F (28°C) and falling to a minimum of a fresh 53.6°F (12°C).
The maximum heat index, which factors the actual air temperature with the relative humidity, is estimated at a tropical 86°F (30°C). Note that heat index values are valued for light wind and location in the shade.
It will be warmer, and the maximum temperature today will be more in line with June's average highest temperature of 82.9°F (28.3°C) than May's of 74.1°F (23.4°C).
Sunrise will be at 5:58 am and sunset at 7:56 pm; the daylight will last for 13h and 58min.

Tomorrow, on Sunday, May 5, mainly clouded weather is also expected.
Minimal precipitation is forecasted. The temperature scale will run from a maximum of a warm 73.4°F (23°C) to a minimum of a refreshing 59°F (15°C).
Tomorrow's peak temperature will adhere to the standard high for May temperature.
Sunrise will be at 5:57 am and sunset at 7:57 pm; tomorrow's daylight will last for 14h and 1min.

The weather will be unstable for the next ten days, and a mix of cloudy, stormy, rainy and sunny weather is expected.
Rainfall is anticipated on Sunday through Thursday. With light precipitation of 0.39" (10mm), most rainfall is expected on Thursday.
Temperature variation will be considerable in the upcoming days. The maximum temperature will vary between 69.8°F (21°C) and 82.4°F (28°C), while the lowest nightly temperature fluctuation will be also substantial, as the minimum temperature will vary between 51.8°F (11°C) and 66.2°F (19°C).
With a maximum temperature of 82.4°F (28°C), Saturday and Wednesday will be the warmest days; Friday will be the coldest day, with the highest temperature of 69.8°F (21°C).