The threat of thunderstorms will begin to return this evening and linger through the Fourth of July.  The first heat wave may be possible for the Philadelphia metropolitan area and southern New Jersey next week.

TODAY

A trough will linger over the region with low clouds and fog in the morning followed by scattered clouds and isolated thunderstorms in the afternoon.  Winds will be from the southeast at 5 to 15 mph.  Temperatures will rise into the lower to mid-80s over the interior, mid to upper 80s in the Delaware River Valley, upper 70s to lower 80s along the coast, and mid to upper 70s on Long Island for highs.

TONIGHT

A cold front will approach the region with increasing clouds and scattered showers and thunderstorms.  Winds will be from the southeast at 5 to 15 mph.  Temperatures will fall into the mid to upper 60s over the interior and upper 60s to lower 70s along the coast for lows.

TOMORROW

An area of low pressure and cold front will produce variable cloud cover and scattered showers and thunderstorms.  Winds will be from the southeast at 5 to 15 mph.  Temperatures will rise into the upper 70s to lower 80s over the interior, lower to mid-80s in the Delaware River Valley, and upper 70s to lower 80s along the coast for highs.

TOMORROW NIGHT

A cold front will linger over the region with scattered showers and thunderstorms.  Winds will be from the south-southwest at 5 to 15 mph.  Temperatures will fall into the mid to upper 60s over the interior and upper 60s to lower 70s along the coast for lows.

MONDAY

A cold front will linger over the region with scattered showers and thunderstorms.  Winds will be from the south-southwest at 5 to 15 mph.  Temperatures will rise into the upper 70s to lower 80s over the interior, mid-80s to lower 90s in the Delaware River Valley, and upper 70s to lower 80s along the coast for highs.

TUESDAY: FOURTH OF JULY!!

A cold front will linger over the region with scattered showers and thunderstorms.  Winds will be from the west at 5 to 15 mph.  Temperatures will range from the mid to upper 60s over the interior and upper 60s to lower 70s along the coast for lows and upper 70s to lower 80s over the interior, mid-80s to lower 90s in the Delaware River Valley, and upper 70s to lower 80s along the coast for highs.

WEDNESDAY

A trough will linger over the region with scattered clouds and isolated thunderstorms.  Temperatures will range from the mid to upper 60s for lows and lower to mid-80s over the interior, mid-80s to lower 90s in the Delaware River Valley, and lower to mid-80s along the coast for highs.

THURSDAY

A trough will linger over the region with scattered clouds and isolated thunderstorms.  Temperatures will range from the lower to mid-60s over the interior and mid to upper 60s along the coast for lows and mid to upper 80s over the interior, upper 80s to mid-90s in the Delaware River Valley, and lower to mid-80s along the coast for highs.

FRIDAY

A trough will linger over the region with scattered clouds and isolated thunderstorms.  Temperatures will range from the upper 60s to mid-70s for lows and mid to upper 80s over the interior, upper 80s to lower 90s in the Delaware River Valley, and lower to mid-80s along the coast for highs.

SATURDAY

A trough will linger over the region with scattered clouds and isolated thunderstorms.  Temperatures will range from the upper 60s to lower 70s over the interior and lower to mid-70s along the coast for lows and mid to upper 80s over the interior, upper 80s to lower 90s in the Delaware River Valley, and lower to mid-80s along the coast for highs.