650x366_05151640_hd12.jpg

After a chill start to Monday, temperatures will warm into the 60s in New Jersey this afternoon, according to AccuWeather.com.

(AccuWeather.com)

It's not supposed to be this cold in the middle of May.

Temperatures normally don't fall below to the upper 40s in most of New Jersey this time of year. This morning was an exception with record-breaking low temperatures in several spots. Trenton fell to 40, one degree below the all-time low set in 1987, according to the National Weather Service.

In Newark, the 40 degrees recorded just before 6 a.m. tied a record that has stood since 1937. Morristown fell to 36 degrees just after 5 a.m. but that's still warmer than the 33 degree reading recorded in 1947.

The low of 37 degrees Monday morning in Allentown, Pa., tied that city's record from 1939, the weather service said. In Philadelphia, the morning low of 42 degrees was 2 degrees away from the city's daily record of 40.

A frost advisory for Sussex and Warren counties expires at 8 a.m. The coldest temperatures in the state as of 7 a.m. can be found in those counties -- 34 in High Point and 35 in Hope, the state climatologist's office said.

The good news for those who'd prefer it to be a bit warmer two weeks before Memorial Day is that temperatures will climb into the mid 60s under sunny skies later this afternoon. It will feel chillier, though thanks to winds that could reach more than 20 mph.

Temperatures will fall back into the upper 40s to about 50 overnight under mainly clear skies.

There's about a 50 percent chance of rain on what should be a cloudy Tuesday with temps in the low 60s. Wednesday is likely to bring another cloudy day with a threat of precipitation before sunny, milder conditions return Thursday and Friday.

Jeff Goldman may be reached at jeff_goldman@njadvancemedia.com. Follow him on Twitter @JeffSGoldman. Find NJ.com on Facebook.

More New York City area weather

More Philadelphia area weather