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Neilson, Illinois Weather Forecast
Neilson, Illinois Weather
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Weather Forecast for Neilson, Illinois : Williamson County
Issued: 4:41 am CST Dec 11, 2025 Latitude: 37.6303283 Longitude: -88.9606264 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Friday Saturday Sunday Monday Tuesday Wednesday
20% chance of rain & snow on Today 20% chance of rain on Tonight Partly Sunny on Friday Mostly Cloudy on Saturday Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday 10% chance of rain on Wednesday
High: 40°F Low: 35°F High: 44°F High: 34°F High: 17°F High: 35°F High: 43°F High: 49°F
Low: 26°F Low: 6 °F Low: 8 °F Low: 25°F Low: 35°F  
Rain & Snow Rain Partly Sunny Mostly Cloudy Sunny Sunny Mostly Sunny Rain
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Current Conditions at
CARBONDALE - (KMDH)
27°
Mostly Cloudy
as of 5:36 AM CST
Rel. Humidity: 92%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: MVFR
Wind Data
5 MPH
250° West
Cloud Level(s): Broken at 2900ft
Current Conditions at
HARRISBURG-RALEIGH - (KHSB)
30°
Cloudy
as of 5:35 AM CST
Rel. Humidity: 80%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
3 MPH
260° West
Cloud Level(s): Solid Overcast at 3100ft
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
23°
Mostly Cloudy
as of 5:35 AM CST
Rel. Humidity: 92%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 2900ft
20% chance of rain & snow Today Today... A slight chance of rain showers before 3pm, then a slight chance of snow showers between 3pm and 5pm. Mostly cloudy, with a high near 40. Light and variable wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 20%.

20% chance of rain Tonight Tonight... A 20 percent chance of showers before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 35. South wind 6 to 10 mph becoming west after midnight.

Partly Sunny on Friday Friday... Partly sunny, with a high near 44. North northwest wind 6 to 10 mph, with gusts as high as 18 mph.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 26. North northwest wind 3 to 7 mph.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 34. North wind 3 to 8 mph.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 6. North northwest wind 8 to 11 mph, with gusts as high as 20 mph.

Sunny on Sunday Sunday... Sunny, with a high near 17. North wind 5 to 11 mph, with gusts as high as 20 mph.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 8. Light and variable wind.

Sunny on Monday Monday... Sunny, with a high near 35. Calm wind becoming south southwest 5 to 9 mph in the morning.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 25. South southwest wind 3 to 6 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 43. South wind 5 to 8 mph.

10% chance of rain Tuesday Night Tuesday Night... A slight chance of rain. Mostly cloudy, with a low around 35. South southwest wind around 8 mph.

10% chance of rain Wednesday Wednesday... A slight chance of rain. Mostly cloudy, with a high near 49. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.

Current Radar Image


Sun Almanac for Neilson, Illinois
Sunrise: 07:01 AM
Sunset: 4:38 PM
Civil Sunrise:06:32 AM
Civil Sunset: 5:07 PM
Nautical Sunrise: 05:59 AM
Nautical Sunset: 5:39 PM
Astro Sunrise: 05:27 AM
Astro Sunset: 6:11 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.