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Alton, IL
 40° 
Last Updated on Dec 9 2022, 10:35 pm CST
Current ConditionsOvercast
Relative Humidity82%
WindWest at 3.5 MPH
(3 KT)
Pressure30.19 mb
Dewpoint35.1 F (1.7 C)
Visibility10.00 miles

7-Day Forecast

Tonight
Mostly Cloudy
Low: 37°
Mostly cloudy with a low around 37.
Light west wind.


Saturday
Chance Rain
High: 45°
A 40% chance of rain, mainly
between 7am and 3pm.
Cloudy with a high near 45.
Calm wind becoming
southeast around 5 mph.


Saturday Night
Mostly Cloudy
Low: 35°
Mostly cloudy with a low around 35.
Light and variable wind.


Sunday
Mostly Sunny
High: 48°
Mostly sunny with a high near 48.
Calm wind becoming
northeast around 5 mph.


Sunday Night
Partly Cloudy
Low: 32°
Partly cloudy with a low around 32.
East wind 3 to 5 mph.


Monday
Mostly Sunny
High: 49°
Mostly sunny with a high near 49.


Monday Night
Mostly Cloudy
Low: 37°
Mostly cloudy with a low around 37.


Tuesday
Chance Rain then Rain
High: 56°
Rain, mainly after noon.
High near 56.
Chance of precipitation is 80%.


Tuesday Night
Rain then Chance Rain
Low: 44°
Rain, mainly before midnight.
Low around 44.
Chance of precipitation is 80%.


Wednesday
Chance Rain
High: 53°
A 30% chance of rain, mainly before noon.
Mostly sunny with a high near 53.


Wednesday Night
Partly Cloudy
Low: 31°
Partly cloudy with a low around 31.


Thursday
Partly Sunny
High: 40°
Partly sunny with a high near 40.


Thursday Night
Mostly Cloudy
Low: 28°
Mostly cloudy with a low around 28.


Friday
Partly Sunny
High: 35°
Partly sunny with a high near 35.


Source: National Weather Service








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