Hot and humid conditions continue today with a dangerous heat index of around 100 degrees.  Waves of showers and thunderstorms return by tomorrow afternoon and evening followed by significantly cooler temperatures.

TODAY

A trough will linger over the region with areas of fog in the morning and scattered clouds and isolated thunderstorms in the afternoon.  Winds will be from the southwest at 5 to 15 mph.  Temperatures will rise into the upper 80s to lower 90s over the interior, mid-90s to lower 100s in the Delaware River Valley, and mid-80s to lower 90s along the coast for highs. A heat index over 100 degrees will be likely.

TONIGHT

A trough will linger over the region with areas of fog developing towards morning.  Winds will be from the southwest at 5 to 15 mph.  Temperatures will fall into the mid to upper 70s over the interior and upper 70s to lower 80s along the coast for lows.

TOMORROW

A trough will linger over the region with areas of fog in the morning and scattered clouds and scattered thunderstorms in the afternoon.  A cold front will follow in the evening with widespread showers and thunderstorms.  Winds will be from the southwest at 5 to 15 mph.  Temperatures will rise into the upper 80s to lower 90s over the interior and along the coast and mid-90s to lower 100s for highs.  A heat index over 100 degrees will be a threat.

TOMORROW NIGHT

A cold front will pass through the region with showers and thunderstorms.  The thunderstorms will be capable of heavy downpours, frequent lightning, hail, and wind gusts over 40 mph.  Winds will veer to the northwest at 5 to 15 mph.  Temperatures will fall into the mid to upper 60s over the interior and lower to mid-70s for lows.

SUNDAY

High pressure will take hold with clearing skies and falling humidity.  Winds will be from the northwest at 5 to 15 mph.  Temperatures will rise into the lower to mid-80s over the interior and along the coast and mid to upper 80s in the Delaware River Valley for highs.

MONDAY

A weak cold front will produce scattered clouds and isolated thunderstorms.  Winds will be from the northwest at 5 to 15 mph.  Temperatures will range from the upper 50s to mid-60s over the interior, mid to upper 60s in the suburbs, and lower to mid-70s in urban areas for lows and mid-70s to lower 80s over the interior, lower to mid-80s along the coast, and upper 80s to lower 90s in the Delaware River Valley for highs.

TUESDAY

A weak trough will produce scattered clouds and isolated showers.  Temperatures will range from the mid to upper 50s over the interior and lower to mid-60s along the coast for lows and mid to upper 70s over the interior, upper 70s to lower 80s along the coast, and lower to mid-80s in the Delaware River Valley for highs.

WEDNESDAY

A cold front will move through the region with isolated to widely scattered showers and thunderstorms.  Temperatures will range from the lower to mid-60s over the interior and upper 60s to lower 70s along the coast for lows and mid-70s to lower 80s over the interior, upper 70s to lower 80s along the coast, and mid to upper 80s in the Delaware River Valley for highs.

THURSDAY

A cold front will move through the region with widely scattered showers and thunderstorms.  Temperatures will range from the upper 50s to lower 60s over the interior and lower to mid-60s along the coast for lows and lower to mid-80s over the interior, upper 80s to lower 90s in the Delaware River Valley, lower to mid-80s along the coast, and upper 70s to lower 80s on Long Island.

FRIDAY

A cold front will move through the region with scattered showers and thunderstorms.  Temperatures will range from the mid to upper 60s over the interior and upper 60s to lower 70s along the coast for lows and mid to upper 80s over the interior, lower to mid-90s in the Delaware River Valley, mid to upper 80s along the coast, and upper 70s to lower 80s on Long Island for highs.