National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Morris Muni-James R Washburn Field Airport (KC09)

Lat: 41.43°NLon: 88.42°WElev: 584ft.

Overcast

23°F

-5°C

Humidity 93%
Wind Speed SW 13 G 16 mph
Barometer 30.01 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 3 Dec 12:15 am CST
Extended Forecast for

Diamond IL

  • Overnight

    Overnight: Mostly cloudy, with a temperature rising to around 22 by 5am. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 19 °F⇑

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of snow showers between noon and 5pm. Cloudy, with a high near 33. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.

    High: 33 °F

    Cloudy then
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 2. Wind chill values as low as -10. North northwest wind 5 to 15 mph.

    Low: 2 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 13. Wind chill values as low as -11. Northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 10 mph.

    High: 13 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -3. Calm wind becoming south around 5 mph after midnight.

    Low: -3 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 27.

    High: 27 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of snow after midnight. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
Mostly cloudy, with a temperature rising to around 22 by 5am. South southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
A chance of snow showers between noon and 5pm. Cloudy, with a high near 33. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 2. Wind chill values as low as -10. North northwest wind 5 to 15 mph.
Thursday
Sunny, with a high near 13. Wind chill values as low as -11. Northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Partly cloudy, with a low around -3. Calm wind becoming south around 5 mph after midnight.
Friday
Partly sunny, with a high near 24.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 15.
Saturday
Mostly cloudy, with a high near 27.
Saturday Night
A chance of snow after midnight. Mostly cloudy, with a low around 16.
Sunday
A chance of snow. Mostly cloudy, with a high near 26.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 10.
Monday
Mostly cloudy, with a high near 25.
Monday Night
A chance of snow. Mostly cloudy, with a low around 17.
Tuesday
Mostly cloudy, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Diamond IL
 41.29°N 88.24°W
Last Update:
4:36 pm CST Dec 2, 2025
Forecast Valid:
12am CST Dec 3, 2025-6pm CST Dec 9, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation