Philadelphia Area Weather Forecasts

Philly Weekend Weather Forecast

An easterly surface wind preceding a warm front will keep mostly cloudy skies over our area on Saturday.  There’s a chance of a light sprinkle in the morning, but most of the day will be just cloudy, maybe some bright spots early afternoon.  High temp  around 50.

A low pressure system moving up through the Great Lakes will pull a warm front through Saturday night into Sunday morning with rain, possibly heavy.  The warm front moves through Sunday mid-morning, the showers end and skies may brighten early afternoon.  Very warm. High 63.  Winds pick up also in the afternoon as a cold front approaches with cloudiness again  thickening.  The cold front moves through Sunday evening.  Temps will plummet to the low 30s Sunday night with windy conditions.

Updated Sat 1/9

It looks like it’s going to be cloudy today (Saturday).  The light sprinkles expected in this morning are developing.   A sprinkle possible early evening but the moderate rain starts after midnight.   The rain ends around noon Sunday.  Very warm and very windy.  We may see some sun in the mid to late afternoon Sunday.     Temperatures begin to fall.    Doesn’t get cold until Sunday night.

Philadelphia Weather Outlook

Philly Weather Outlook

Our first encounter with cold weather will end starting tomorrow (Thurs).  A warmer and moist southwesterly flow will develop over the weekend.  Saturday will be mostly cloudy with a chance of a shower but most of the day likely dry.

Rain develops Saturday evening into Sunday, possibly heavy.  A strong cold front moves through late Sunday and temperatures will drop during the evening.

Next week will be cold again.  Sometime during the following weekend of the 16th, we’ll likely see our first snow.

Philadelphia Weather Outlook

Winter Weather Outlook

Happy New Year!

We finished 2015 with a record-breaking average temperature for December.  No secret here…it was warm!

Winter 2016 is looking colder at the start and the trajectory of the flow from the strong El Ninio is changing, with the moisture from the Pacific entering  further south along California instead of Washington state.  This trajectory usually means more interaction over the southern states and eventually here in the Northeast.

The medium range models have been trending colder than forecast just a few days ago.  This means that later this weekend and early next week, we’ll have much colder than average temperatures, something that hasn’t occurred since November.  A previously forecast warmup that had been expected the end of next week doesn’t appear to be as warm.

Currently, the interaction of the broad, cold air upper air trough and the southern stream moisture is expected to occur over the Atlantic, leaving our area sunny and cold.

But this jet configuration is a recipe for storm formation.   With the new upper air pattern emerging just now, the amount of cold weather and storm development is in flux and forecasts more than 5 days away are expected to be highly changeable.    Expect a more active pattern of weather here after next Wednesday.

Weather… and Other Things 'Up in the Air'