The same high pressure system that will produce tranquil and comfortable weather conditions this afternoon and evening will also introduce a hot and humid air mass to New Jersey by mid week. However, as has been the theme this Summer, the hot and humid conditions will only last a day before giving way to another cold front and cool temperatures.
This afternoon on through tomorrow, high pressure will slowly drift to the north of New Jersey. Clear skies to scattered cloud cover can be expected as a result. Winds will veer from the northwest to northeast at 5 to 10 mph. Temperatures this afternoon will rise into the lower to mid 80's for highs throughout New Jersey. Temperatures tonight will fall into the mid to upper 50's over northwestern New Jersey and lower to mid 60's throughout the rest of New Jersey. Temperatures tomorrow will rise into the lower to mid 80's throughout New Jersey, however with an increase in humidity, temperatures will feel like the upper 80's to lower 90's.
By Wednesday, the high pressure system will shift off the New England coast leading to a marked increase in humidity throughout the region as winds veer to the southwest at 5 to 15 mph. Clear skies to scattered cloud cover can be expected through the day. Low temperatures will range from the lower to mid 60's over northwestern New Jersey, mid to upper 60's throughout much of the rest of New Jersey with a few lower 70's possible in urban locations. Temperatures in the afternoon will rise into the mid to upper 80's over northwestern New Jersey and along the immediate coast with upper 80's to lower 90's in the Delaware River Valley and in urban locations. The combination of these temperatures with humidity will make temperatures feel like the mid to upper 90's.
Thankfully, these hot and humid conditions will only last 24 to 30 hours as a cold front will drive through the state leading to a shift to winds to the northwest and a fall in humidity by Thursday afternoon. The cold front is expected to pass through with only a few isolated showers or thunderstorms. Most locations will remain dry. Morning lows will range from the mid to upper 60's with a muggy morning expected. However, afternoon highs will range from the lower to mid 80's with dew points crashing into the lower 50's leading to very pleasant and refreshing conditions in the afternoon with clear skies in place by late afternoon and evening.
High pressure will build into New Jersey on Thursday night and then shift to the coastal waters of Maine for Saturday and Sunday. Dry conditions are expected for the period however as winds veer from the northwest to east, a marine air mass will be in place by Saturday leading to scattered to overcast cloud cover. Low temperatures will range from the lower to mid 60's throughout New Jersey. High temperatures will range from the upper 70's to lower 80's along the coast and lower to mid 80's in the Delaware River Valley.
By Monday, Labor Day, a weak low pressure will approach the region with variable clouds and widely scattered to isolated showers. Temperatures will range from the mid to upper 60's for lows and upper 70's to lower 80's for highs.