7:00 Am | *Rain threat begins late today and continues off and on through the weekend...colder air seeps in late in the weekend and this could result in a mix with or changeover to snow/sleet*
Paul Dorian
6-Day Philadelphia Forecast
Today
Cloudy with some early patchy fog, turning milder, rain possible by late-afternoon, highs in the upper 40’s
Tonight
Cloudy and chilly with occasional rain, patchy fog possible, lows in the lower 40’s
Saturday
Cloudy, mild, more rain is likely, patchy fog possible, near 50 degrees for afternoon highs
Saturday Night
Cloudy, becoming breezy and turning colder, more showers are likely, upper 30’s for late night lows
Sunday
Cloudy, breezy, colder, more rain is likely, there is the chance for the rain to mix with or change to snow and/or sleet later in the day or at night, low-to-mid 40’s
Monday
Partly sunny, becoming windy, cold, chance for a snow shower or two, mid 40’s
Tuesday
Mainly sunny, cold, upper 30's
Wednesday
Mainly sunny, cold, near 40 degrees
Discussion
A broad area of moisture will push northeastward today from the southern states, but the heaviest rain looks like it will largely be suppressed to our south - at least initially. This unfolding complex pattern will feature two surface low systems - one headed towards the Tennessee Valley and the other to the Mid-Atlantic coastline - and it’ll be supported by a vigorous and a slow-moving wave of energy in the upper part of the atmosphere. During the latter stages of the weekend, colder air will seep into the region from the northwest and there is the chance that rain which should reach us by Saturday night mixes with or changes to snow and/or sleet on Sunday or Sunday night. Once the complex system pulls slowly away from the east coast on Monday, the door will open for another cold shot to arrive and this cold blast will be accompanied by another wave of energy in the upper atmosphere. Consequently, winds should increase noticeably later Monday and Monday night and they’ll continue to be quite strong on Tuesday as well from a northwesterly direction with a couple of snow showers possible.
Meteorologist Paul Dorian
Perspecta, Inc.
perspectaweather.com