TUESDAY Hi 44°F, partly sunny with increasing clouds, winds NW, 11 to 20 to 15 MPH, G24 to 31 to 25 MPH
⏪ Hrly Data Table | Hrly Future Graph ⏩
IMPORTANT NOTE ON NWS DATA
⏪ Hrly Data Table | Hrly Future Graph ⏩
No watches or warnings issued near O’Hare at 8:00 a.m. Tuesday
Updates at Arlingtoncardinal.com/NWSChicago
Chicagoland Weather hazards expected…
Limited Non Thunderstorm Wind Risk near the Indiana shore.
Significant Lakeshore Flood Risk Indiana shore.
Winds near the Indiana Lake Michigan shore could gust to 40 mph at times through this evening. The strong onshore winds will produce large, battering waves that will result in lakeshore flooding and beach erosion.
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O’HARE FORECAST …
Forecast Beginning Tuesday, Oct. 18, 2022
Tuesday: Mostly cloudy, with a high near 44. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 32. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday: Sunny, with a high near 48. West wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night: Partly cloudy, with a low around 33. West wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday: Mostly sunny, with a high near 56. West southwest wind around 10 mph, with gusts as high as 20 mph.
Thursday Night: Partly cloudy, with a low around 39.
Friday: Sunny, with a high near 68.
Friday Night: Mostly clear, with a low around 49.
Saturday: Sunny, with a high near 70.
Saturday Night: Partly cloudy, with a low around 54.
Sunday: Mostly sunny, with a high near 74.
Sunday Night: A chance of showers. Mostly cloudy, with a low around 59.
Monday: A chance of showers. Mostly cloudy, with a high near 69. Breezy.
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
615 AM CDT Tue Oct 18 2022
Issued at 246 AM CDT Tue Oct 18 2022
Dominant lake effect band continues to affect southwest Lower Michigan into north central Indiana, with weaker, less organized lake effect into Porter County early this morning. Precip into Porter County is mostly rain, though with colder air slowly filtering into the region its certainly possible that precip could mix with or change to snow, especially away from the lake. Little or no snow accumulation is expected, and with time the lake effect should gradually shift east of Porter County today.
Synoptically today, water vapor imagery shows another shortwave and associated speed max rounding the top of the upper low over Ontario. Guidance pivots this feature south across lower Michigan today, but with trough axis extending west could see some enhanced ascent and perhaps even some sprinkles or a light shower this today. If nothing else, should see a good deal of cloud cover today which should help keep temps unseasonably cool.
Skies should gradually clear out tonight and despite moderating temperatures aloft, it should be another chilly night. We will see a small step up in temps Wednesday, but with lighter winds and mostly sunny skies it should feel milder than today.
– Izzi/NWS Chicago