Sunday forecast: Cold for St. Patrick’s Day celebrations around Chicagoland, slushy snow accumulating during morning hours

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How should you dress for Sunday’s continuing St. Patrick’s Day weekend celebrations around Chicagoland?

In one word: warm.

A rain/snow mix has been falling around the area Sunday morning, with up to 1 or 2 inches of slushy, wet snow possible in some locations. The highest accumulations are likely in the far northwest suburbs.

That’s a massive contrast from Saturday, when high temperatures reached 66 degrees at O’Hare International Airport. Additionally, about one-third of an inch of rain fell from the storms that rolled through Chicagoland late Friday night into early Saturday morning.

As for Sunday, morning temps ranged only in the low to mid-30s, with northwest winds gusting as high as 25 miles per hour in some spots. That’s creating morning wind chills in the 20s, even the teens in some locations.

Wind chills will remain stuck in the 20s and low 30s, even as air temps get into the upper 30s and lower 40s later Sunday.

Meanwhile, Chicagoland will see gradual afternoon clearing after the morning band of precipitation makes its way through the areas, with some sun possibly even peeking out later Sunday.

But it’ll remain cold all day.

Fortunately, that cold air doesn’t stick around long. High temps will get back into the mid-50s on Monday and all the way back into the mid- to upper 60s by Tuesday, though it’ll remain cooler in lakeside areas.

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Current conditions

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Looking ahead

The extended outlook calls for another nice warm-up right away this week, with temps in the upper 60s by Tuesday, along with increasing clouds.

Wednesday brings the next chance for storms, with highs near 60 but falling all day for the last full day of winter.

Thursday is the Spring Equinox, and we’ll have chilly temps in the low 40s, plus a chance of morning rain/snow showers, then partly sunny skies by the afternoon.