Wednesday, November 10, 2021 10:33 PM

A chilly polar air mass will drop temperatures like a rock across eastern parts of the lower-48

Christopher Nunley

The month of November has featured below-average temperatures for much of the eastern U.S. and Southern Plains. The average temperature (daily lows and daily highs) through November 9 has been around 5 degrees below average. Notice the blue and green colors on the map below for these areas. Join the Firsthand Weather Supporter Group today!

On the flip side, temperatures have been above average for much of the West and Northern Plains where temperatures have been close to 5 degrees above average. Notice the orange and red colors on the map below for these areas.

Temperature departure from average November 1 through November 9

A similar pattern is expected to take shape late this week, through the upcoming weekend, into the first half of next week. A storm system will dislodge polar air into eastern parts of the lower-48. This means temperatures will drop like a rock and be well below average. Some areas will experience temperatures 10-25 degrees below average by this weekend into early next week. If you live east of the Mississippi River, you will need the jacket! Join the Firsthand Weather Supporter Group today!

Temperature departure from average from late this weekend through early next week

The storm system paired with such a cold air mass will deliver the first snow of the season to many across the Northern Plains, Great Lakes, Ohio Valley, and Northeast late this week and into the weekend. The heaviest snow will fall across the eastern Dakotas and northern and central Minnesota. This is where over 1 foot of snow will fall. Secondary areas of heavier snow will set up on the eastern shores of the Great Lakes and along the higher peaks of the Appalachians. Join the Firsthand Weather Supporter Group today!

Snow accumulation forecast: Dakotas

Snow accumulation forecast: the Great Lakes

Snow accumulation forecast: Mid-Atlantic

Snow accumulation forecast: Northeast

Stay warm out there, and while you’re bundled up in the house, take a look at a few of the latest 2021-2022 Winter Outlooks below!

Read the NOAA Winter Outlook here.

Read the AccuWeather Winter Outlook here.

Read the Farmers’ Almanac here.

Read the Old Farmer’s Almanac here.