Alton, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Partly Cloudy 27°F
Feels Like 22°F  
Humidity N/A Dew Point N/A Wind W 4 MPH Barometer N/A
Report from a MADIS/MESONET weather station 0.2 mi. S of central Alton
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Point Forecast at a Glance

WedDec 3
Wed Dec 3: Snow, Low 12F
20%
 
12
ThuDec 4
Thu Dec 4: Clear, High 22F, Low 13F
22
13
FriDec 5
Fri Dec 5: Mostly Sunny, High 37F, Low 24F
37
24
SatDec 6
Sat Dec 6: Partly Sunny, High 38F, Low 25F
38
25
SunDec 7
Sun Dec 7: Snow, High 33F, Low 15F
20%
33
15
MonDec 8
Mon Dec 8: Mostly Sunny, High 31F, Low 22F
31
22
TueDec 9
Tue Dec 9: Mostly Sunny, High 43F, Low 33F
43
33

7-Day Temperature Trend

Week Ahead Summary

High temperatures climb from 22°F to a high of 43°F by week's end. Some precipitation possible with wintry mix on at least one day.

Climate Context

This week's forecast shows temperatures running 8°F below the historical average for December. Normal highs for this period are around 44°F with lows around 27°F.

This Date in Weather History

1983 - Birmingham, AL, was drenched with 9.22 inches of rain in 24 hours. The rains caused severe flash flooding which literally submerged traffic.

More on this and other weather history

Alton, IL 7 Day Weather Forecast Details

Wednesday Dec 3

Snow

Night: A slight chance of snow before 2am, then a chance of flurries between 2am and 4am. Cloudy, with a low around 12. North wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

Thursday Dec 4

Clear

Day: Cloudy through mid morning, then gradual clearing, with a high near 22. North wind 3 to 8 mph.

Partly Cloudy

Night: Partly cloudy, with a low around 13. Light and variable wind.

Friday Dec 5

Mostly Sunny

Day: Mostly sunny, with a high near 37. South wind 3 to 6 mph.

Mostly Cloudy

Night: Mostly cloudy, with a low around 24. South wind around 5 mph becoming calm in the evening.

Saturday Dec 6

Partly Sunny

Day: Partly sunny, with a high near 38.

Freezing Rain

Night: A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 25. Chance of precipitation is 20%.

Sunday Dec 7

Snow

Day: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 33.

Mostly Cloudy

Night: Mostly cloudy, with a low around 15.

Monday Dec 8

Mostly Sunny

Day: Mostly sunny, with a high near 31.

Partly Cloudy

Night: Partly cloudy, with a low around 22.

Tuesday Dec 9

Mostly Sunny

Day: Mostly sunny, with a high near 43.

Mostly Cloudy

Night: Mostly cloudy, with a low around 33.

Wednesday Dec 10

Rain

Day: A 20 percent chance of rain. Partly sunny, with a high near 48.


About Alton, IL

Alton ( AWL-tən) is a city on the Mississippi River in Madison County, Illinois, United States, about 18 miles (29 km) north of St. Louis, Missouri. The population was 25,676 at the 2020 census. It is a part of the River Bend area in the Metro-East region of the Greater St. Louis metropolitan area. It is well known for its limestone bluffs along the river north of the city. It's the former location of an historical state penitentiary, and played a significant role preceding and during the American Civil War. It was the site of the last Abraham Lincoln and Stephen Douglas debate in October 1858. The former state penitentiary in Alton was used during the Civil War to hold up to 12,000 Confederate prisoners of war.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.