Friday Hi 27 just before midnight Friday/Saturday, partly sunny, winds NW to N to NE to SE, 8 to 6 MPH
⏪ Hrly Data Table | Hrly Future Graph ⏩
IMPORTANT NOTE ON NWS DATA
⏪ Hrly Data Table | Hrly Future Graph ⏩
Friday and Friday Evening …
No Weather Hazards expected …
A disturbance is forecast to slide through southern Wisconsin Friday evening, bringing a chance of snow showers to far northern Illinois. A few flurries may reach the northwest suburbs of Chicago.
Cooler temperatures today, however arriving High pressure Saturday brings another warmup (High 38).
Large-scale atmospheric flow in which the west to east component (i.e., direction in the latitudinal) is dominant. The accompanying meridional (north-south, longitudinal, or along a meridian) component is often weaker than normal.
Daily low temperatures and daily high temperatures are on the way up. We’re gaining about 2 or 3 minutes of daylight every day in the progression toward vernal equinox, March 20, 2023.
O’HARE FORECAST …
Forecast Beginning Friday, Feb. 24, 2023
Friday: Mostly cloudy, with a high near 28. North wind 5 to 10 mph becoming east northeast in the afternoon.
Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a steady temperature around 27. East northeast wind 5 to 10 mph becoming light and variable after midnight.
Saturday: Mostly sunny, with a high near 39. West wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night: Mostly clear, with a low around 29. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday: Sunny, with a high near 48. West southwest wind 5 to 10 mph becoming east southeast in the afternoon.
Sunday Night: Rain, with thunderstorms also possible after 3am. Low around 36. Breezy. Chance of precipitation is 80%.
Monday: Rain. High near 56. Breezy. Chance of precipitation is 100%.
Monday Night: Mostly cloudy, with a low around 32. Breezy.
Tuesday: Mostly sunny, with a high near 45. Breezy.
Tuesday Night: Mostly cloudy, with a low around 34.
Wednesday: Mostly cloudy, with a high near 50.
Wednesday Night: A chance of rain. Mostly cloudy, with a low around 34.
Thursday: A chance of rain. Partly sunny, with a high near 45.
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
550 AM CST Fri Feb 24 2023
.SHORT TERM… Issued at 254 AM CST Fri Feb 24 2023
– Zonal flow returns today, lingering into the weekend.
– A disturbance slides through southern Wisconsin this evening, bringing a chance of snow showers to far northern Illinois.
– Cooler temperatures today, however arriving High pressure Saturday brings another warmup.
Upper level zonal flow begins to work back across the Midwest today, opening the door for potential disturbances to slide through the region. This pattern lingers into the weekend, with a disturbance forecast to slide across southern Wisconsin this evening. This will bring a chance of snow showers to northern Illinois, with a dusting to light accumulations of less than 0.5 inches expected. Further south, in central Illinois, the possibility of additional precipitation will occur as weak upper level vort bubbles develo Pthis afternoon. These vort bubbles are anticipated to remain south of the local coverage area, but could drift into the far southern CWA. Otherwise for much of northern Illinois into northwest Indiana, expect clouds building throughout today as this disturbance approaches.
Dry conditions move back into the region Saturday as sfc High pressure arrives from the northern Plains. This brings about clearing skies through the morning into Saturday afternoon, and warming temperatures back into the 30s and 40s for highs.