Philadelphians could wake up to a new record-low temperature on Tuesday.

The cold-for-May snap hitting the region today -- temperatures are about 15 degrees below normal -- should continue overnight, with a low temperature of around 41 degrees expected, the National Weather Service says.

If the mercury drops any lower than that, Philadelphia would have a new record: The coldest temperature ever recorded on May 14 is 40 degrees, according to the weather service.

The weather service is calling that mark a "possible vulnerable record low."

The high today in Philly is expected to only reach 60 degrees; some parts of the region may remain in the 50s. A slightly warmer high of 65 is expected for tomorrow. Typically, highs at this time of year are in the low- to mid-70s.

In other sections of Pennsylvania, frost and freeze warnings will be in effect overnight.

A freeze warning for the Poconos says below-freezing temperatures are highly likely between 2 a.m. and sunrise Tuesday, which could damage sensitive outdoor plants.

In Lancaster, Harrisburg and other areas of central Pennsylvania, a frost advisory says people "should protect sensitive crops and vegetation."

The cold wave is hitting much of the mid-Atlantic, with large sections of the warning expecting frost and freezes, according to AccuWeather. In recent days, places like Buffalo and northern Michigan have even seen snow.

Contact Emily Babay at 215-854-2153 or Follow @emilybabay on Twitter.
Contact the Breaking News Desk at 215-854-2443; Follow @phillynews on Twitter.