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Lancaster, Illinois Weather Forecast
Lancaster, Illinois Weather
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Weather Forecast for Lancaster, Illinois : Peoria County
Issued: 5:36 am CST Nov 5, 2025 Latitude: 40.5803163 Longitude: -89.8373317 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Veterans Day
Sunny on Today Mostly Clear on Tonight Mostly Sunny on Thursday Mostly Cloudy on Friday 40% chance of rain on Saturday Mostly Sunny on Sunday Sunny on Monday Partly Sunny on Veterans Day
High: 63°F Low: 32°F High: 61°F High: 68°F High: 57°F High: 40°F High: 40°F High: 50°F
Low: 52°F Low: 37°F Low: 29°F Low: 20°F Low: 23°F  
Sunny Mostly Clear Mostly Sunny Mostly Cloudy Rain Mostly Sunny Sunny Partly Sunny
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Current Conditions at
PEORIA - (KPIA)
52°
Clear
as of 4:54 AM CST
Rel. Humidity: 71%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
10 MPH
220° Southwest
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 63. West southwest wind 9 to 17 mph becoming north in the afternoon. Winds could gust as high as 29 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 32. North northwest wind 5 to 7 mph becoming calm in the evening.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 61. Light east wind becoming south southeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

70% chance of rain Thursday Night Thursday Night... Rain likely, mainly after midnight. Mostly cloudy, with a low around 52. South southeast wind 9 to 14 mph becoming southwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Mostly Cloudy on Friday Friday... Mostly cloudy, then gradually becoming sunny, with a high near 68. West wind 9 to 14 mph, with gusts as high as 23 mph.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 37. West northwest wind 5 to 9 mph becoming light northwest after midnight. Winds could gust as high as 17 mph.

40% chance of rain Saturday Saturday... A 40 percent chance of rain after noon. Partly sunny, with a high near 57. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 16 mph.

40% chance of rain Saturday Night Saturday Night... A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 29.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 40.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 20.

Sunny on Monday Monday... Sunny, with a high near 40.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 23.

Partly Sunny on Veterans Day Veterans Day... Partly sunny, with a high near 50.

Sun Almanac for Lancaster, Illinois
Sunrise: 06:35 AM
Sunset: 4:51 PM
Civil Sunrise:06:06 AM
Civil Sunset: 5:20 PM
Nautical Sunrise: 05:34 AM
Nautical Sunset: 5:52 PM
Astro Sunrise: 05:02 AM
Astro Sunset: 6:24 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.