Tuesday Hi 41, cloudy, light rain ends 9a, winds WSW to W, 10 to 17 to 9 MPH, G25 to 29 to 18 MPH
⏪ Hrly Data Table | Hrly Future Graph ⏩
IMPORTANT NOTE ON NWS DATA
⏪ Hrly Data Table | Hrly Future Graph ⏩
Tuesday and Tuesday Night …
No Weather Hazards expected …
Regional water vapor imagery and surface observations show an occluding low pressure system centered over Green Bay, WI with sprawling cyclonic flow encompassing the entire Great Lakes region. In Chicagoland, all areas have already hit their high temperature for Tuesday before the early-morning passage of a cold front.
A total of 0.18 inch of rain accumulated at O’Hare during the day yesterday, Monday, January 16, 2023.
Temperatures on Tuesday are expected to gradually fall or hold most of the day, with readings during daylight hours in the upper 30s to around 40. Temperatures might hold at 41°F in Arlington Heights until about 4:00 p.m. and then drop gradually overnight to a low of 34°F Wednesday about 5:00 a.m.
O’HARE FORECAST …
MIDWAY — problem with NWS O’Hare
Forecast Beginning Tuesday, Jan. 17, 2023
Tuesday: Isolated showers before 10am. Cloudy, with a high near 41. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tuesday Night: Cloudy, with a low around 34. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday: A slight chance of rain and snow after 3pm. Mostly cloudy, with a high near 40. West northwest wind 5 to 10 mph becoming east northeast in the afternoon. Chance of precipitation is 20%.
Wednesday Night: Rain, possibly mixed with snow before 9pm, then rain between 9pm and 3am, then drizzle after 3am. Patchy fog after midnight. Low around 36. East northeast wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday: Drizzle likely before 9am, then rain likely between 9am and 3pm, then rain and snow likely after 3pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 43. East southeast wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Thursday Night: A chance of sprinkles and flurries before 9pm, then a chance of flurries between 9pm and midnight. Cloudy, with a low around 30.
Friday: Mostly cloudy, with a high near 34.
Friday Night: Mostly cloudy, with a low around 26.
Saturday: Mostly cloudy, with a high near 33.
Saturday Night: Mostly cloudy, with a low around 28.
Sunday: Partly sunny, with a high near 37.
Sunday Night: A chance of snow. Mostly cloudy, with a low around 28.
Monday: Mostly cloudy, with a high near 37.
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
517 AM CST Tue Jan 17 2023
.SHORT TERM… Issued at 126 AM CST Tue Jan 17 2023
Through Tuesday night…
Regional water vapor imagery and surface observations show an occluding low pressure system centered over Green Bay, WI with sprawling cyclonic flow encompassing the entirety of the Great Lakes. Locally, all areas have already hit their high temperature for the day thanks to the early-morning passage of a cold front. Temperatures from this point forward are only expected to gradually fall if not stagnate, with readings during daylight hours in the upper 30s to around 40. Overcast skies and breezy west winds will be the norm today, which will make for a decidedly gloomy Tuesday. Low clouds may attempt to scatter this evening before redeveloping after sunrise on Wednesday in association with the next slug of moisture and storm system approaching from the southwest. Overnight lows are expected to bottom out near the freezing mark.