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Poplar Grove, Illinois Weather Forecast
Poplar Grove, Illinois Weather
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Click for Special Weather Statement for Poplar Grove, Illinois
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Weather Forecast for Poplar Grove, Illinois : Boone County
Issued: 2:21 pm CST Dec 17, 2025 Latitude: 42.3683522 Longitude: -88.822047 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Thursday Friday Saturday Sunday Monday Tuesday
Mostly Sunny on This Afternoon Increasing Clouds on Tonight 100% chance of rain & snow on Thursday Mostly Sunny on Friday 20% chance of snow on Saturday Sunny on Sunday Mostly Cloudy on Monday Partly Sunny on Tuesday
High: 37°F Low: 39 °F High: 42 °F High: 24°F High: 39°F High: 26°F High: 36°F High: 42°F
Low: 8 °F Low: 18°F Low: 12°F Low: 16°F Low: 30°F  
Mostly Sunny Increasing Clouds Rain & Snow Mostly Sunny Snow Sunny Mostly Cloudy Partly Sunny
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Current Conditions at
ROCKFORD - (KRFD)
36°
Clear
as of 2:54 PM CST
Rel. Humidity: 74%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
6 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
JANESVILLE - (KJVL)
36°
Clear
as of 2:45 PM CST
Rel. Humidity: 74%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
6 MPH
130° Southeast
Cloud Level(s): Clear
Current Conditions at
DE KALB TAYLOR MUNICIPAL - (KDKB)
34°
Clear
as of 2:55 PM CST
Rel. Humidity: 86%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
BURLINGTON MUNICIPAL AIR - (KBUU)
37°
Clear
as of 2:55 PM CST
Rel. Humidity: 69%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
5 MPH
170° South
Cloud Level(s): Clear
Mostly Sunny on This Afternoon This Afternoon... Mostly sunny, with a high near 37. South southeast wind around 5 mph, with gusts as high as 15 mph.
Increasing Clouds on Tonight Tonight... Drizzle likely, mainly after 5am. Increasing clouds, with a temperature rising to around 39 by 5am. South southeast wind 5 to 15 mph, with gusts as high as 30 mph.
100% chance of rain & snow Thursday Thursday... Rain and snow before 4pm, then a chance of snow after 5pm. Temperature rising to near 42 by 8am, then falling to around 27 during the remainder of the day. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
40% chance of snow Thursday Night Thursday Night... Scattered snow showers, mainly before 9pm, then a chance of flurries after midnight. Mostly cloudy, with a low around 8. Wind chill values as low as -10. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 24. West northwest wind 10 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 18.
20% chance of snow Saturday Saturday... A 20 percent chance of snow after noon. Mostly cloudy, with a high near 39.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 12.
Sunny on Sunday Sunday... Sunny, with a high near 26.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 16.
Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 36.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 30.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 42.
Current Radar Image


Sun Almanac for Poplar Grove, Illinois
Sunrise: 07:19 AM
Sunset: 4:24 PM
Civil Sunrise:06:47 AM
Civil Sunset: 4:56 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 5:31 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:06 PM
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