Clear and Cold with Low 50°F at O'Hare; North Central Illinois Flirting with Upper 30s; Unseasonably Warm Temperatures Return Saturday
Sunrise 6:55 AM WED OCT 8 2025 East 67°
Sunset 6:20 AM WED OCT 8 2025 West 263°
sunrise sunset azimuth chicago / Google Search
O’HARE FORECAST …
The forecast low in Arlington Heights is 3 degrees lower than the forecast low at O'Hare International Airport overnight Tuesday/Wednesday (50-47). Skies clearing overnight allowed temperatures to cool readily after sunset with forecast lows in the 40s and some upper 30s possible in the typical cool rural spots in interior northern Illinois west of the Fox River Valley. Cherry Valley has a forecast low of 41°F, and Harvard has a forecast low of 40°F. Coldest days this week are forecast in the mid-40s at O'Hare early Thursday and early Friday. Unseasonably warm daily highs in the 70s return return Sunday through Tuesday. No rain in sight Wednesday through Tuesday.
Tuesday Night: Clear, with a low around 50. North northwest wind around 10 mph.
Wednesday: Sunny, with a high near 62. Northeast wind around 10 mph.
Wednesday Night: Mostly clear, with a low around 46. Northeast wind 5 to 10 mph.
Thursday: Sunny, with a high near 65. Southeast wind around 5 mph, with gusts as high as 10 mph.
Thursday Night: Mostly clear, with a low around 46. East southeast wind around 5 mph becoming south after midnight.
Friday: Mostly sunny, with a high near 67.
Friday Night: Partly cloudy, with a low around 50.
Saturday: Sunny, with a high near 68.
Saturday Night: Mostly clear, with a low around 52.
Sunday: Mostly sunny, with a high near 70.
Sunday Night: Mostly cloudy, with a low around 57.
Monday Columbus Day: Mostly sunny, with a high near 74.
Monday Night: Mostly cloudy, with a low around 58.
Tuesday: Mostly sunny, with a high near 75.
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Monday Night: Mostly cloudy, with a low around 58.
Tuesday: Mostly sunny, with a high near 75.
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NWS Forecast Chicago (O'Hare)
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(Satellite Cloud Cover East United States)
Arlingtoncardinal.com/usforecastchart
(US Weather Forecast Chart)
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Ultraviolet Index/UV Index
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Chicagoland Sunrise, Sunset and Solar Information for Chicago area
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Chicagoland Moonrise, Moonset and Lunar Phase information for Chicago area
Full climate/weather details chicagoweatherstation.com
(Desktop Mac/PC links)
Chicago record high temperatures
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See also ...
Arlington Heights Weather Forecast
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Chicago allergy weather
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Chicago arthritis weather
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Chicago respiratory weather
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Important links below ad ...
chicago.chgowx.com
NWS Forecast Chicago (O'Hare)
Arlingtoncardinal.com/radar
(Chicagoland Weather Radar)
Arlingtoncardinal.com/clouds
(Satellite Cloud Cover East United States)
Arlingtoncardinal.com/usforecastchart
(US Weather Forecast Chart)
Arlingtoncardinal.com/uvindex
Ultraviolet Index/UV Index
Arlingtoncardinal.com/sun
Chicagoland Sunrise, Sunset and Solar Information for Chicago area
Arlingtoncardinal.com/moon
Chicagoland Moonrise, Moonset and Lunar Phase information for Chicago area
Full climate/weather details chicagoweatherstation.com
(Desktop Mac/PC links)
Chicago record high temperatures
Chicago record low temperatures
Chicago extreme records
Chicago normal temperatures
Chicago Weather Radar
Chicago Weather Forecast
See also ...
Arlington Heights Weather Forecast
(Mobile/Desktop/Mac/PC)
allergy.chgowx.com
Chicago allergy weather
arthritis.chgowx.com
Chicago arthritis weather
respiratory.chgowx.com
Chicago respiratory weather
Much of the information in CHGOWX.com, Chicago Weather Stations and Chicago Weather Station consists of material from the National Weather Service, which is in the public domain (See ABOUT section).