Mostly sunny and unseasonably cold for this time of year, highs in the low 50's (normal high at Philly Airport is 65)
Partly cloudy, cold, possible frost late, lows by morning in the low-to-mid 30’s
Mostly sunny and continued unseasonably cold, low 50's
Mostly clear, cold, possible frost late, low-to-mid 30’s
Mostly sunny, still unseasonably chilly, low 50’s
Partly sunny, unseasonably cool, low-to-mid 50’s
Mostly sunny, cool, upper 50’s
Partly sunny, cool, near 60
Strong high pressure will spread eastward from the Plains over the next couple of days and it will be anchoring the coldest air mass of the season so far in the eastern half of the nation. High temperatures for the next several days will be way below normal for this time of year and lows late at night will not be far from the freezing mark in the northern and western suburbs. Below normal temperatures continue in the region this weekend although there will be some slight modification in temperatures.
Elsewhere, there are two large sunspot regions on a suddenly active sun and both are currently facing the Earth. One of these active regions did indeed erupt last night with an M-class solar flare and more activity is possible over the next 24 hours or so.