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Porterfield, Illinois Weather Forecast
Porterfield, Illinois Weather
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Weather Forecast for Porterfield, Illinois : Marshall County
Issued: 3:36 pm CST Dec 17, 2025 Latitude: 41.0842011 Longitude: -89.1620283 View on Google Maps

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Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
60% chance of rain on Tonight 100% chance of rain on Thursday Mostly Sunny on Friday Mostly Cloudy on Saturday Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday
Low: 46 °F High: 49 °F High: 29°F High: 45°F High: 34°F High: 41°F High: 48°F High: 45°F
Low: 13°F Low: 32 °F Low: 19°F Low: 23°F Low: 34°F Low: 29°F  
Rain Rain Mostly Sunny Mostly Cloudy Sunny Partly Sunny Partly Sunny Partly Sunny
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Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
37°
Clear
as of 3:55 PM CST
Rel. Humidity: 74%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
5 MPH
140° Southeast
Cloud Level(s): Clear
Current Conditions at
PERU - (KVYS)
37°
Clear
as of 3:55 PM CST
Rel. Humidity: 80%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
8 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
36°
Clear
as of 3:55 PM CST
Rel. Humidity: 86%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
5 MPH
120° Southeast
Cloud Level(s): Clear
Current Conditions at
PEORIA - (KPIA)
37°
Clear
as of 3:54 PM CST
Rel. Humidity: 74%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
6 MPH
170° South
Cloud Level(s): Clear
60% chance of rain Tonight Tonight... Showers likely, mainly after 5am. Increasing clouds, with a temperature rising to around 46 by 5am. Breezy, with a south wind 8 to 13 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
100% chance of rain Thursday Thursday... Showers, mainly before noon. Temperature rising to near 49 by 9am, then falling to around 36 during the remainder of the day. Breezy, with a south wind 18 to 23 mph becoming west in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
40% chance of snow Thursday Night Thursday Night... A chance of snow showers before midnight, then a chance of flurries between midnight and 3am. Mostly cloudy, with a low around 13. Wind chill values between -5 and 5. Breezy, with a west wind 23 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 29. Wind chill values between -5 and 5. Blustery, with a west northwest wind 16 to 21 mph becoming west 9 to 14 mph in the afternoon. Winds could gust as high as 29 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a temperature rising to around 32 by 4am. South wind 9 to 18 mph, with gusts as high as 28 mph.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 45. South wind 11 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 28 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 19. West northwest wind 8 to 10 mph, with gusts as high as 18 mph.
Sunny on Sunday Sunday... Sunny, with a high near 34.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 23.
Partly Sunny on Monday Monday... Partly sunny, with a high near 41.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 34.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 48.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 29.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 45.
Current Radar Image


Sun Almanac for Porterfield, Illinois
Sunrise: 07:16 AM
Sunset: 4:30 PM
Civil Sunrise:06:45 AM
Civil Sunset: 5:01 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 5:35 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:09 PM
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