Monday Hi 14, colder, falling temps after 3p, cloudy then partly cloudy by 3p, winds NW, 11 to 6 MPH, G16 to 15 MPH, until 5p
⏪ Hrly Data Table | Hrly Future Graph ⏩
IMPORTANT NOTE ON NWS DATA
⏪ Hrly Data Table | Hrly Future Graph ⏩
Monday and Monday Night …
Weather Hazards expected …
Elevated Excessive Cold Risk.
Be prepared to endure temperatures below zero and in single digits Monday, Tuesday and early Wednesday morning.
Low temps will drop well below zero overnight Monday to Tuesday, especially where several inches of snow fell over the weekend.
The normal daily low temperature is now rising, but the next three days are forecast to bring significant below normal temperatures. The normal daily high increases for the first time this year from 31°F to 32°F today, January 30; but today’s high temperature is forecast to be only 14°F. Arlington Heights and nearby communities are forecast to be below 0°F from 12:00 a.m. to 7:00 a.m. overnight Monday/Tuesday.
We’re gaining about 2 minutes of daylight every day in the progression toward vernal equinox, March 20, 2023.
O’HARE FORECAST …
Forecast Beginning Monday, Jan. 30, 2023
Monday: Cloudy through mid morning, then gradual clearing, with a high near 14. Wind chill values as low as -3. Northwest wind around 10 mph, with gusts as high as 15 mph.
Monday Night: Mostly clear, with a low around -3. Wind chill values as low as -12. Northwest wind 5 to 10 mph.
Tuesday: Sunny, with a high near 15. Wind chill values as low as -9. West wind 5 to 10 mph.
Tuesday Night: Mostly clear, with a low around 4. Wind chill values as low as -10. West southwest wind 5 to 10 mph.
Wednesday: Sunny, with a high near 27. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night: Mostly clear, with a low around 17.
Thursday: Sunny, with a high near 30.
Thursday Night: Mostly clear, with a low around 4.
Friday: Sunny, with a high near 17.
Friday Night: Partly cloudy, with a low around 9.
Saturday: Partly sunny, with a high near 33.
Saturday Night: Cloudy, with a low around 29.
Sunday: Mostly cloudy, with a high near 35.
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).
Get updates from The Cardinal ALL NEWS FEEDS on Facebook. Just ‘LIKE’ the ‘Arlington Cardinal Page (become a fan of our page). The updates cover all posts and sub-category posts from The Cardinal — Arlingtoncardinal.com. You can also limit feeds to specific categories. See all of The Cardinal Facebook fan pages at Arlingtoncardinal.com/about/facebook …
Help fund The Cardinal Arlingtoncardinal.com/sponsor
Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
527 AM CST Mon Jan 30 2023
.SHORT TERM… Issued at 242 AM CST Mon Jan 30 2023
Expecting the light snow/flurries north of I-80 and freezing drizzle and light snow south of I-80 to end by around sunrise this morning as shortwave trough responsible for this precip exits stage right. Planning to monitor radar/observational trends the next few hours and may be able to clear all or portions of the winter wx advisory a little early.
Cold air advection today should keep temps from rebounding much from the morning lows. The incoming arctic air mass is actually pretty dry, so fairly confident that low clouds/stratus will clear out during the day today.
Other than perhaps some passing filaments of thin mid level clouds, tonight should be clear and very cold. Surface high moving into the region should allow for winds to become light and variable. It really looks like tonight will be an ideal setup for strong radiational cooling, particularly over the fresh dee Psnowpack closer to the WI border and across interior northern IL. ECMWF and GFS 2m temps drop temps over the fresh snowpack into the teens below zero. That is quite a bit colder than some of the other guidance, but seems quite reasonable, so adjusted temps downward tonight, particularly over the deeper snow.
Winds expected to remain 5 mph or less where temps bottom out, so not planning any wind chills headlines. Even without the wind, the main forecast message for tonight is bitterly cold temps. It will remain very cold Tuesday, but as a consolation prize, at least skies should be mostly sunny.
– Izzi/NWS Chicago