MONDAY Hi 45, sunny, winds WSW to NW to NNW, 15 to 2 MPH, G28 to 10 MPH, 10a to 7p
⏪ Hrly Data Table | Hrly Future Graph ⏩
IMPORTANT NOTE ON NWS DATA
⏪ Hrly Data Table | Hrly Future Graph ⏩
Monday and Monday Night …
No Weather Hazards expected…
This Weather Outlook is for portions of North Central Illinois … Northeast Illinois and Northwest Indiana.
Much milder conditions expected the next couple of days, but precision in forecasting high temperatures is affected by snow cover north and west of Chicago. A weak cold front will move into the area today without any meaningful push of cooler air behind the front. The atmosphere is quite dry, so significant cloud cover and any precipitation is not likely with the cold front.
Fog possible in some low-lying areas.
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O’HARE FORECAST …
Forecast Beginning Monday, Nov. 21, 2022
Monday: Sunny, with a high near 45. West southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Monday Night: Partly cloudy, with a low around 27. West northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Tuesday: Sunny, with a high near 48. West southwest wind 5 to 10 mph.
Tuesday Night: Mostly clear, with a low around 30. Southwest wind 5 to 10 mph.
Wednesday: Sunny, with a high near 53. Southwest wind 5 to 10 mph.
Wednesday Night: Partly cloudy, with a low around 39.
Thanksgiving Day: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 50.
Thursday Night: A chance of rain. Mostly cloudy, with a low around 35.
Friday: Mostly cloudy, with a high near 42.
Friday Night: Partly cloudy, with a low around 31.
Saturday: Mostly sunny, with a high near 47.
Saturday Night: Partly cloudy, with a low around 32.
Sunday: Mostly sunny, with a high near 47.
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
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.