This summer has not really features much in the way of heat waves for New Jersey. Consider the definition of a heat wave is three days or more of temperatures at 90 or above. There isn't one station in New Jersey that has seen those conditions. However, this summer has featured the introduction of plenty of Tropical air masses that feature high levels of humidity and the threat for thunderstorms capable of some impressive rainfall. While the pattern does not appear to support any prolonged heat waves, the weather will be rather volatile over the next seven days, a characteristic that has been a staple this Summer that will continue into the Fall.
Today, high pressure will slowly drift to the east with scattered cloud cover expected. An isolated shower is possible along the Delaware River, however most locations will remain dry. Winds will be from the southwest at 5 to 10 mph. Temperatures will rise into the mid to upper 80's for highs with a noted increase in humidity.
Tonight, scattered cloud cover can be expected with a few areas of fog towards morning. Winds will remain from the southwest at 5 to 10 mph. With the increase in humidity, temperatures will only fall into the lower to mid 70's for lows.
A cold front will slowly approach New Jersey tomorrow with increasing clouds through the day with isolated showers and thunderstorms. The thunderstorms will become more widespread by the evening as the cold front slowly drops to the southeast through New Jersey. The strongest thunderstorms will be capable of producing wind gusts over 60 mph, frequent lightning, heavy downpours, and hail. A few isolated thunderstorms will reach severe levels, however the most significant threat will be very heavy downpours. Winds will be from the southwest at 10 to 15 mph. Temperatures will rise into the upper 80's to lower 90's ahead of the showers and thunderstorms in the late afternoon and evening.
The cold front will slowly drop south through central and southern New Jersey on Thursday morning with lingering showers and a few isolated thunderstorms. High pressure will build in from the Great Lakes in the afternoon with clearing skies from north to south. Winds will veer to the northwest and north at 5 to 15 mph. Temperatures will range from the upper 60's to lower 70's for morning lows and lower to mid 80's for afternoon highs.
High pressure will be in control Friday on through Sunday with scattered cloud cover expected. A polar air mass will be in place which will mean low humidity can be expected with comfortable temperatures. Low temperatures will range from the lower to mid 60's. High temperatures will range from the lower to mid 80's throughout the state.
An area of low pressure will approach on Monday with scattered showers expected. A few of these showers will be capable of heavy downpours. Temperatures will range from the mid to upper 60's for lows and lower to mid 80's for highs.