The National Weather Service has issued a freeze warning for south central and southeastern Wisconsin.
The weather service said Monday this will be the first widespread hard freeze in southern Wisconsin with temperatures in most areas expected to dip into the 20s. Communities along Lake Michigan may be slightly warmer.
News 3 meteorologist Karin Swanson said this hard freeze is arriving slightly later than normal this year. Last year, the first hard freeze in Madison was on Oct. 12, when temperatures fell to 24 degrees.
The weather service said the freeze will likely end the growing season for the region's farmers and gardeners.
The freeze warning is in effect from 1 a.m. to 8 a.m. Tuesday.