7:00 AM | Rain today as cold air mass presses towards the east coast...much colder Fri/Sat/Sun

6-Day Philly Forecast

Today

Periods of rain, some of the rain will be heavy at times, mild, highs in the low-to-mid 50’s

Tonight

Lingering early evening showers possible then remaining mostly cloudy, turning colder late, lows by morning near 40 degrees

Friday

Partly sunny, breezy, colder, mid-to-upper 40’s

Friday Night

Partly cloudy, cold, upper 20’s

Saturday

Partly sunny, blustery, cold, near 40 degrees

Sunday

Mainly sunny, still pretty cold, low-to-mid 40’s

Monday

Mainly cloudy, milder, near 50 degrees

Tuesday

Mainly cloudy, warm, chance for showers, upper 50’s

Discussion

A strong cold front will arrive in the region today and low pressure will form along the frontal boundary zone generating periods of rain around here and some of it will be heavy at times. Much colder air will flood into the Northeast US following the cold frontal passage for the Friday/Saturday/Sunday time period. This weekend will also feature the first serious outbreak of “lake effect” snow in those areas just downstream from the Great Lakes given the expected temperature difference between the cold air mass flowing over the still relatively warm water temperatures. This cold shot will be only temporary, however. Once high pressure pushes off the east coast early next week, the floodgates will open once again for much milder air to push northward into the Northeast US. In fact, record warmth is likely in many areas east of the Mississippi River by the middle of next week and the warmth should continue right through Christmas Day.