Frosty Temps Before Brief Warm-Up Later This Weekend For Chicago Area

A chilly start to the weekend is expected before temperatures warm up on Sunday, according to the National Weather Service forecast.

Friday has a high of 55 degrees, and Saturday a high of 58. A frost advisory has been issued for most of the Chicago area as temperatures as low as 31 are possible early Saturday, the weather service said.

Frost could harm sensitive outdoor vegetation, sensitive outdoor plants may be killed if left uncovered, according to the weather service.

"Frost will be most widespread across portions of interior northern Illinois and northwest Indiana," the weather service said.

Temperatures begin to "moderate Sunday into Monday," the weather service said. Sunday has a high of 68 degrees, and Monday a high of 76.

Weather should be mostly dry, although isolated afternoon showers are possible on Friday, and it could rain again Sunday night. Cooler weather is expected to return for the middle to end of the work week again.

Here is a more detailed look at the weather this weekend, per the weather service:

FRIDAY: A 20 percent chance of showers after 2 p.m. Partly sunny, with a high near 51. North wind 5 to 10 mph, with gusts as high as 20 mph.

FRIDAY NIGHT: Widespread frost, mainly after 5 a.m. Otherwise, partly cloudy, with a low around 35. East northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

SATURDAY: Widespread frost, mainly before 7 a.m. Otherwise, mostly sunny, with a high near 54. Light north northwest wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

SATURDAY NIGHT: Partly cloudy, with a low around 39. North wind 5 to 10 mph becoming south in the evening.

SUNDAY: A slight chance of showers, with thunderstorms also possible after 4 p.m. Partly sunny, with a high near 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20 percent.

SUNDAY NIGHT: A chance of showers and thunderstorms. Partly cloudy, with a low around 48. Chance of precipitation is 30 percent.