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Alta, Illinois Weather Forecast
Alta, Illinois Weather
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Weather Forecast for Alta, Illinois : Peoria County
Issued: 6:36 pm CST Dec 21, 2025 Latitude: 40.8108703 Longitude: -89.6342645 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Christmas Day Friday Saturday Sunday
Cloudy on Tonight Partly Sunny on Monday Mostly Sunny on Tuesday Cloudy on Wednesday Mostly Cloudy on Christmas Day Mostly Sunny on Friday Mostly Cloudy on Saturday Sunny on Sunday
Low: 28°F High: 44°F High: 51°F High: 53°F High: 61°F High: 56°F High: 50°F High: 36°F
Low: 38°F Low: 35°F Low: 51°F Low: 46°F Low: 38°F Low: 25°F  
Cloudy Partly Sunny Mostly Sunny Cloudy Mostly Cloudy Mostly Sunny Mostly Cloudy Sunny
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Current Conditions at
PEORIA - (KPIA)
30°
Feels like 21°F
Clear
as of 6:54 PM CST
Rel. Humidity: 68%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.42 in.
Flight Rule: VFR
Wind Data
9 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
30°
Clear
as of 6:55 PM CST
Rel. Humidity: 63%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.42 in.
Flight Rule: VFR
Wind Data
5 MPH
140° Southeast
Cloud Level(s): Clear
Current Conditions at
GALESBURG - (KGBG)
30°
Clear
as of 6:55 PM CST
Rel. Humidity: 80%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.41 in.
Flight Rule: VFR
Wind Data
5 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
BLOOMINGTON - (KBMI)
27°
Feels like 16°F
Clear
as of 6:56 PM CST
Rel. Humidity: 73%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.44 in.
Flight Rule: VFR
Wind Data
10 MPH
170° South
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 28. South wind 5 to 10 mph, with gusts as high as 20 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 44. South wind 10 to 13 mph, with gusts as high as 23 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 38. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 51. West southwest wind around 6 mph becoming light and variable in the afternoon.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 35. Calm wind becoming east southeast 5 to 7 mph after midnight.

Cloudy on Wednesday Wednesday... Cloudy, with a high near 53. South wind 6 to 9 mph, with gusts as high as 16 mph.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 51. South southwest wind around 6 mph, with gusts as high as 15 mph.

Mostly Cloudy on Christmas Day Christmas Day... Mostly cloudy, with a high near 61.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 46.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 56.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 38.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 50.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 25.

Sunny on Sunday Sunday... Sunny, with a high near 36.

Current Radar Image


Sun Almanac for Alta, Illinois
Sunrise: 07:20 AM
Sunset: 4:34 PM
Civil Sunrise:06:49 AM
Civil Sunset: 5:05 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 6:13 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.