Accuweather Channel Forecast

Weather Forecast Discussion

Winter storm to bring not only snow but a wintry mix and rain this weekend

Below zero wind chills follow the storm

TONIGHT: Turning partly cloudy and cold. Low: 24

SATURDAY: Turning out cloudy and colder with snow arriving before nightfall, which will lead to slick spots. High: 36 

SATURDAY NIGHT: Snow mixing with or changing to sleet, freezing rain, and plain rain to the south, all heavy at times. Low: 31

WINTER STORM WARNING IS NOW IN EFFECT FOR THE LEHIGH VALLEY, NORTHWESTERN NEW JERSEY, THE POCONOS, AND BERKS, LUZERNE, PIKE, SCHUYLKILL, LANCASTER, AND LEBANON COUNTIES FOR SATURDAY AFTERNOON THROUGH SUNDAY AFTERNOON

WINTER STORM WATCH REMAINS FOR HUNTERDON, UPPER BUCKS, AND UPPER MONTGOMERY COUNTIES FOR SATURDAY AFTERNOON THROUGH SUNDAY AFTERNOON


Friday served as a nice breather in between the little light snow that fell last night and the much bigger and more impactful winter storm that arrives over the weekend. Things remain quiet overnight as clouds break at least a little and Saturday morning should be likewise dry and uneventful and probably the best time this weekend to get any errands done. That’s because the break will be short-lived as our impending weekend storm will bring not only snow, but a wintry mix of sleet, freezing rain, and even plain rain for many later Saturday through early Sunday morning. And no matter how much of each type of weather you see in your backyard, all of our backyards will experience the coldest air of the winter so far as a bitter cold blast of arctic air arrives late in the weekend and has us shivering through early next week.

Snow will develop during Saturday afternoon overspreading the area from west to east, and there will be a solid “thump” of snow on the front end of this storm, which is really when all of the snowfall accumulations are expected. The worst time to travel will be as this thump of snow moves through, lasting a few hours towards the Delaware Valley, up to six hours in the Lehigh Valley, and longer still farther north towards the Poconos and northwestern New Jersey. Once the initial burst of snow passes, the changeover from snow to mix and rain should occur along the Interstate 95 corridor during the early to mid-evening, from late evening towards midnight along Interstate 78, and then after midnight up towards those along Interstate 80.

In terms of accumulations, let’s start towards the Interstate 95 corridor, where it’s probably only a coating to an inch or so at most before a quick change to rain, which it will remain for most of the storm and wash away any snow that fell. Farther north and west through Lancaster and Pottstown through much of Upper Bucks/Mont to most of northern New Jersey, it’s two to four inches of snow on the front end before a change to a wintry mix and then eventually plain rain. Our forecast has the four inch of snow forecast line running pretty much right through Reading and Allentown. Then along and especially north of the Interstate 78 corridor into the Poconos and northwestern New Jersey, the snow will last longer and it’s likely four to eight inches of snow before a change to sleet and freezing rain for a prolonged period, with only a limited mixing with plain rain in some spots. It will be four inches closer to I-78 and eight inches towards the Poconos and higher elevations. This is also where some ice and sleet accumulations are most likely to occur as well. Ice may accumulate between a tenth to a quarter of an inch, mainly from the northern Lehigh Valley on north, especially across the higher elevations.

As an arctic cold front sweeps through and our storm lifts out, any wintry mix or rain will shut off and wrap up early Sunday morning, and most of the day on Sunday will be dry with some breaks of sun later in the day. More notably however, temperatures will begin to crash later Sunday, rapidly dropping below freezing and probably as low as the single digits and even near zero Sunday night. Winds will increase and may gust over 30 miles-per-hour, helping to deliver a blast of bitterly cold arctic air and likely driving wind chills well below zero. Martin Luther King Jr. Day on Monday will be the coldest day of the winter by far, with winds chills possibly remaining below zero from Sunday night right through early Tuesday morning. 

Another storm is likely by the second half of next week, centered on next Wednesday and Thursday, with rain more likely than snow for most of us, at least the way things look right now. Another shot of arctic air may be in the cards towards next weekend.

Have a great night and a nice weekend, despite the wintry and then bitter cold weather!
 

LINKS:  HOUR BY  HOUR  |  RADAR | TRAFFIC

10 Day Forecast

  • Saturday

    36° / 31°
    Increasing Clouds; Snow Late 100%
  • Sunday

    32° /
    Morning Mix, Then Temps Fall 90%
  • Monday

    14° /
    Blustery and Frigid; Flurry 0%
  • Tuesday

    26° / 18°
    Sun to Clouds; Flurries Late 20%
  • Wednesday

    46° / 32°
    Milder with a Chance of Rain 40%
  • Thursday

    37° / 23°
    A Chance of Rain and Snow 30%
  • Friday

    35° / 16°
    Mostly Cloudy; Brisk, Colder 20%
  • Saturday

    29° / 14°
    Clouds and Sun; Even Colder 0%
  • Sunday

    33° / 14°
    Partly Sunny 0%
  • Monday

    26° / 11°
    Mostly Cloudy 20%

Interactive Radars

Allentown, PA 18102

34°F

Overcast Feels like 34°
  • 0 mph
  • 79%
  • 28°
  • 30.18 in
  • 7:21 AM
  • 5:03 PM

TONIGHT

31°F
Snow, Ice, and Rain

  • 15 mph ENE
  • 100%
  • 5:03 PM
  • Saturday

    36° / 31°
  • Sunday

    32° /
  • Monday

    14° /
  • Tuesday

    26° / 18°
  • Wednesday

    46° / 32°
  • Thursday

    37° / 23°

Reading, PA 19605

32°F

Feels like 32°
  • 0 mph
  • 92%
  • 30°
  • 30.19 in
  • 7:22 AM
  • 5:06 PM

TONIGHT

32°F

  • 10 mph ENE
  • 100%
  • 5:06 PM
  • Saturday

    36° / 32°
  • Sunday

    33° /
  • Monday

    15° /
  • Tuesday

    27° / 19°
  • Wednesday

    47° / 33°
  • Thursday

    38° / 24°

This Week's Circulars

Regional Radar Image

Historical Averages

High Low
Current 36°F 31°F
Average 35°F 19°F
Record 61°F January 19, 1915 -11°F January 19, 1994

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