PHILADELPHIA (CBS) - Locate that jacket ASAP!

A back door cold front is on the precipice of sweeping through the Delaware Valley, initiating a rapid and significant drop in temperatures this evening and tonight.

After highs in the 80's earlier today, a cruelly chilly east wind develops on the backside of the front as such our current temperature in Philadelphia of 74 degrees will plummet into the 40's by midnight.

Sad.

FORECAST:

SATURDAY NIGHT-- Increasing Clouds with a Rapid and Significant Temperature Drop.
Areas of Drizzle Develop Late. Low 46.

SUNDAY -- Cloudy, Breezy and Cold with Areas of Light Rain. High 47.

MONDAY -- Heavy Rain and Thunder in the Morning then Breezy with Spotty Showers. High 62.

TUESDAY -- Partly Sunny and Cool. High 54.

WEDNESDAY - Mostly Sunny and Turning Milder. High 63.

THURSDAY - Comfortable with a Mix of Sun and Clouds. High 62.

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JERSEY SHORE:

SATURDAY NIGHT-- Increasing Clouds with a Rapid and Significant Temperature Drop.
Areas of Drizzle Develop Late. Low 46.

SUNDAY -- Cloudy, Windy and Cold with Areas of Light Rain. High 47.

MONDAY - Heavy Rain and a Thunderstorm then Breezy with Spotty Showers. High 56.

OCEAN TEMP: 76°
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POCONOS:

SATURDAY NIGHT-- Increasing Clouds with a Rapid and Significant Temperature Drop.
Areas of Drizzle Develop Late. Low 36.

SUNDAY -- Cloudy, Breezy and Cold with Areas of Light Rain. High 37.

MONDAY -- Heavy Rain and Thunder in the Morning then Breezy with Spotty Showers. High 52.