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Thayer, Illinois Weather Forecast
Thayer, Illinois Weather
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Weather Forecast for Thayer, Illinois : Sangamon County
Issued: 2:32 am CST Dec 21, 2025 Latitude: 39.5381087 Longitude: -89.7631533 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Christmas Day Friday Saturday
Mostly Clear on Overnight Sunny on Sunday Partly Sunny on Monday Sunny on Tuesday Mostly Cloudy on Wednesday Partly Sunny on Christmas Day Partly Sunny on Friday Partly Sunny on Saturday
Low: 23°F High: 40°F High: 47°F High: 56°F High: 62°F High: 68°F High: 53°F High: 52°F
Low: 27°F Low: 40°F Low: 38°F Low: 52°F Low: 44°F Low: 35°F  
Mostly Clear Sunny Partly Sunny Sunny Mostly Cloudy Partly Sunny Partly Sunny Partly Sunny
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Current Conditions at
SPRINGFIELD - (KSPI)
30°
Clear
as of 1:52 AM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.30 in.
Flight Rule: VFR
Wind Data
5 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
TAYLORVILLE MUNICIPAL - (KTAZ)
30°
Clear
as of 2:35 AM CST
Rel. Humidity: 63%
Dew Point: 19°F
Pressure: 30.32 in.
Wind Data
6 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
LITCHFIELD MUNI ARP - (K3LF)
28°
Clear
as of 2:35 AM CST
Rel. Humidity: 68%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
8 MPH
340° North
Cloud Level(s): Clear
Current Conditions at
LOGAN COUNTY AIRPORT - (KAAA)
28°
Clear
as of 2:35 AM CST
Rel. Humidity: 58%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.32 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 23. North northwest wind 6 to 8 mph.

Sunny on Sunday Sunday... Sunny, with a high near 40. North wind around 6 mph becoming light and variable.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 27. South southeast wind 6 to 11 mph, with gusts as high as 21 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 47. South wind 10 to 14 mph, with gusts as high as 21 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 40. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 56. Southwest wind 5 to 8 mph becoming light and variable in the afternoon.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 38. Light and variable wind becoming east southeast 5 to 8 mph in the evening.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 62.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 52.

Partly Sunny on Christmas Day Christmas Day... Partly sunny, with a high near 68.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 44.

Partly Sunny on Friday Friday... Partly sunny, with a high near 53.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 35.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 52.

Current Radar Image


Sun Almanac for Thayer, Illinois
Sunrise: 07:16 AM
Sunset: 4:39 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:15 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.