7:00 AM | Arctic air mass modifies today

6-Day Philly Forecast

Today

Mostly sunny, not as cold, highs in the upper 30's

Tonight

Mainly clear, quite cold, lows in the lower 20’s

Thursday

A mix of sun and clouds, milder, low 40’s

Thursday Night

Partly cloudy, not as cold as recent nights, near 30 degrees

Friday

Becoming cloudy, mild, chance for some PM rain, mid 40’s

Saturday

Mostly cloudy, mild, chance for early showers and then steadier rain at night, mid-to-upper 40’s

Sunday

Mainly cloudy, mild, periods of rain likely, upper 40’s

Monday

Colder with mostly sunny skies, breezy, upper 30’s

Discussion

The Arctic air mass in control around here during the past couple of days will modify somewhat today and we’ll turn slightly milder for the second half of the week. By the end of the week, moisture will spread northeastward from the Deep South and showers are likely later Friday into early Saturday. By late in the weekend, a more important rain event is possible from Saturday night into Sunday and this system will usher in much colder air for the early part of next week. This initial shot of more Arctic air will likely be followed by a second blast at mid-week. Elsewhere, the rain (coast) and snow (inland) will continue to pile up over the next few days across California thanks to El Nino enhanced Pacific Ocean storms. Also, next week's initial Arctic blast will arrive first in the Upper Midwest and the playoff football game in Minneapolis on Sunday is likely to be played with temperatures near zero.