Much of this August has been on the cool side for practically all of New Jersey with temperatures averaging one to two degrees below normal for the month throughout the state. However, the last few days of August will feature a few days of hazy, hot, and humid weather conditions, although not prolonged.
High pressure will continue to drift over New Jersey today leading to clear skies throughout the state. Winds will be light and variable for most of the day but will develop out of the south at 5 to 10 mph by this evening. Temperatures will rise into the mid to upper 80's throughout much of the state, lower to mid 80's right along the coastal waters.
Tonight, as high pressure shifts into the Atlantic Ocean, winds will veer and increase from the southwest at 5 to 15 mph. A marked increase in humidity will be felt as low temperatures will fall into the lower to mid 60's throughout New Jersey. Clear skies are expected for most of the region, however some patch areas of fog are possible in a few locations over northwestern New Jersey and along the immediate coast.
Tomorrow, a hazy, hot, and humid air mass from the Gulf Coast will finally arrive in New Jersey, really for the first time this August. Clear skies to a few scattered fair weather cumulus clouds can be expected. Winds will be from the southwest at 5 to 15 mph. Temperatures will rise into the mid to upper 80's over northern New Jersey and along the immediate coast while upper 80's to lower 90's can be expected in the Delaware River Valley through central New Jersey and northeastern New Jersey. These temperatures combined with increasing humidity will lead to temperatures felling like the mid 90's for much of the region.
The hot and humid weather conditions will not last long though, as has been the theme throughout this Summer. A cold front will move through the region in the morning with scattered cloud cover and an isolated shower or thunderstorm possible. Winds will veer from the southwest to northwest at 5 to 15 mph as the cold front moves through. Temperatures in the morning will range from the lower to mid 60's with rather muggy conditions. However, by the afternoon, a much cooler and drier Polar air mass will arrive with much lower humidity and temperatures rising only into the upper 70's to lower 80's for highs.
The cool, Canadian air mass will linger over New Jersey on Friday as high pressure moves over the region with clear skies to a few scattered clouds. With light and variable winds expected and very low humidity, temperatures will crash into the lower to mid 50's over northwestern New Jersey and mid to upper 50's throughout the rest of New Jersey for morning lows. High temperatures will rise into the upper 70's to lower 80's for highs.
High pressure will shift off the coast by Saturday and remain just to the east of New Jersey through Sunday with scattered cloud cover expected. With winds returning to the southwest at around 10 mph, temperatures will once again rebound to slightly above normal levels. On Saturday, temperatures will range from the upper 50's to lower 60's for lows and lower to mid 80's for highs. On Sunday, temperatures will be even warmer with lows in the mid to upper 60's and highs in the mid to upper 80's.
By Labor Day, Monday, a cold front will be approaching the region. Much of the day will feature dry conditions with increasing clouds. However, by the evening the cold front will move through the region with scattered showers and thunderstorms. A few of the thunderstorms will have the potential to become severe. With winds from the southwest at 10 to 20 mph, plenty of moisture will be transported in from the Gulf of Mexico leading to a rather humid day. Low temperatures will range from the upper 60's to lower 70's. High temperatures will range from the mid to upper 80's.