SUNDAY Hi 31-33, sunny, winds WSW to SW, 10 to 17 MPH, G17 to 31 to 29 MPH
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ARLINGTON HEIGHTS WEATHER
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IMPORTANT NOTE ON NWS DATA
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Sunday and Sunday Night …
Weather hazards expected…
This Hazardous Weather Outlook is for portions of North Central Illinois…Northeast Illinois and Northwest Indiana.
Limited Excessive Cold Risk.
DISCUSSION…
Wind chills near to slightly below zero were likely early this morning.
Sunday’s forecast low 12°F was on target at NWS Chicago O’Hare with a low of 13°F reported at 4:51 a.m. and 5:51 a.m. CARDINAL NEWS had an unofficial low reading of 12.0°F around 5:00 a.m.
The normal low at Chicago’s official O’Hare for November 20 is 31°F. The record low for November 20 in Chicago goes back to 1873 at 8°F. However, the record low for Midway International Airport was broken yesterday and today. Saturday’s record low at Midway was 16°F — breaking the previous record of 17°F set on November 19, 1951. Sunday morning’s record low at Midway was 13°F — breaking the previous record low of 14°F set on November 20, 1964. Midway’s archives only go back to 1928. Chicago’s official records over the years were not always tied to O’Hare. In 1873, Chicago’s official observations were recorded at the Roanoke Building at the southeast corner of Madison Street and LaSalle Street — about three blocks north of the Chicago Board of Trade site which was developed in 1885. The current Chicago Board of Trade Building was built in 1930.
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O’HARE FORECAST …
Forecast Beginning Sunday, Nov. 20, 2022
Sunday: Sunny, with a high near 33. Wind chill values as low as 1. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night: Mostly clear, with a low around 28. Southwest wind around 15 mph, with gusts as high as 30 mph.
Monday: Partly sunny, then gradually becoming sunny, with a high near 42. Southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Monday Night: Mostly clear, with a low around 25. Northwest wind around 5 mph becoming calm. Winds could gust as high as 10 mph.
Tuesday: Sunny, with a high near 46. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night: Mostly clear, with a low around 29.
Wednesday: Mostly sunny, with a high near 54.
Wednesday Night: Partly cloudy, with a low around 35.
Thanksgiving Day: A chance of rain after noon. Mostly cloudy, with a high near 49.
Thursday Night: A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 34.
Friday: A chance of rain and snow. Partly sunny, with a high near 42.
Friday Night: Mostly cloudy, with a low around 31.
Saturday: Mostly sunny, with a high near 42.
CHICAGOWEATHERSTATION.COM
ChicagoWeatherStation.com I O’Hare Normal Temps/Precip I O’Hare Record Temps, Precip, Snow
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WunderMap® with Temperature/Wind Data || Google: Arlington Heights Area Temps | US TEMPS
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Midwest Cloud Cover with Arlington Heights Weather Forecast
ChicagoWeatherStation.com I O’Hare Normal Temps/Precip I O’Hare Record Temps, Precip, Snow
SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with solar azimuth and trajectory, times for dawn, sunrise, solar noon, sunset, dusk …
NIGHT SKY THIS MONTH …
Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky.” Check the night sky objects for this month and past months in the playlist from the Space Telescope Science Institute YouTube channel (Musical track The Far River written by Jonn Serrie, from the album And the Stars Go With You courtesy of New World Music Ltd).
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Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
546 AM CST Sun Nov 20 2022
.SHORT TERM… Issued at 204 AM CST Sun Nov 20 2022
Through Monday…
Our Sunday begins on an awfully chilly note. Temperatures early this morning (2:04 AM) are down the in the lower and middle 20`s with winds chills a few degrees on either side of 0. Most areas will see wind chills below 0 at daybreak. Temperatures will be up several degrees this afternoon from yesterday with highs forecast in the lower and middle 30`s. However, a windy day ahead will keep wind chills down in the middle 20`s at best. A rather tight low level pressure gradient behind a passing ridge axis will provide 20-25 mph gusts through a good portion of the day. Winds will ramp up even further this evening and tonight as a potent low level jet moves overhead. Winds at 925mb will accelerate to near 50 kts tonight. However, an inversion is expected to set up near 950mb and prevent us from mixing into the 40-50 kt winds not far above the surface. Winds under the inversion should still provide us with regular gusts to around 30 mph. But, if we manage to mix any deeper than forecast, we will be looking at even stronger winds.
Winds will come down gradually through Monday morning and afternoon with an area of deformation at the surface approaching from the west weakening the gradient flow and the low level jet pushing off the east. Modest WAA both at the surface and aloft will keep temperatures tonight in the middle and upper 20`s followed by 40`s expected Monday afternoon. Both today and Monday will feature lots of sunshine with an overall dry profile expected over the next couple of days.
Doom/NWS Chicago
