High 7°F, Low -3° Overnight Arlington Heights, Chicago Weather Forecast Northwest

The lowest overnight temperature is forecast for Tuesday/Wednesday overnight with an air temperature of -3°F and a Wind Chill of a -18°F about 4:00 a.m. Wednesday, December 27, 2017. Settling for minimal warmth with a high of 17°F, Thursday and Friday are forecast to bring the highest temperatures through the next week, including New Year’s Day. The record low for December 26 is -11°F. The record low for December 27 is -10°F. The overnight low for early this morning before official declaration was -3°F. There is about one inch of snow cover on the ground in Arlington Heights.

A Wind Chill Advisory is posted for Long Grove, Mundelein, Lake Forest and cities north and west of Cook County. Nearby counties with a Wind Chill Advisory include Lake County, McHenry County, DuPage County, Kane County, and counties northwest of De Kalb County — including De Kalb County.

Today: Mostly sunny and cold, with a high near 7. Wind chill values as low as -17. West wind around 10 mph, with gusts as high as 15 mph.

Tonight: Mostly clear, with a low around -3. Wind chill values as low as -18. West northwest wind around 10 mph.

Wednesday: Sunny and cold, with a high near 8. Wind chill values as low as -17. West northwest wind 5 to 10 mph.

Wednesday Night: Increasing clouds, with a low around 4. Wind chill values as low as -5. Northwest wind around 5 mph becoming calm in the evening.

Thursday: A 50 percent chance of snow. Cloudy, with a high near 17. South wind 5 to 10 mph.

Thursday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 9.

Friday: A 20 percent chance of snow after noon. Partly sunny, with a high near 17.

Friday Night: A chance of snow, mainly before midnight. Mostly cloudy, with a low around 5.




Saturday: A chance of snow after noon. Partly sunny, with a high near 12.

Saturday Night: A chance of snow, mainly before midnight. Mostly cloudy, with a low around 2.

Sunday: A slight chance of snow. Mostly cloudy, with a high near 13.

Sunday Night: A slight chance of snow. Mostly cloudy, with a low around 4.

New Year’s Day: A slight chance of snow. Partly sunny, with a high near 14.

december.chicagoweatherstation.com

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