Weekly Outlook: December 7-13, 2020

We’ve got a fairly quiet week coming up across the region with a moderating trend as well.

We start the week off with high pressure in control, providing us with dry and cool conditions. We’ll start off sunny, but high clouds will start to stream in during the afternoon ahead of low pressure moving off the Carolina coast. That system will pass well to our south and east on Tuesday, but the flow around it, moving over the still relatively mild ocean, could help generate a few ocean-effect rain or snow showers, mainly across Cape Cod and east-coastal Massachusetts, especially coastal Plymouth County and Cape Ann. That system pulls away Tuesday night, but another weak upper-level disturbance swings through on Wednesday. Moisture will be limited with this system, but again, a few rain or snow showers can’t be ruled out, mainly well north and west of Boston. High pressure builds in again for Thursday and Friday with generally dry weather and moderating temperatures.

Temperatures should start to moderate by Thursday. Image provided by Weathermodels.com

Things start to get active again next weekend. Most of the models show a low pressure area heading into the Great Lakes and then southeastern Canada. This would result in a warmup around here with some rain likely as the storm drags a frontal system toward the region. However, most of these same models showed a similar scenario for the storm we just had on Saturday. Also, some of the members of the various ensembles show the potential for a secondary area of low pressure to develop south of New England, a common occurrence with low pressure areas that pass well to our west. If this were to happen, it would result in the warm air never making it in here. Now, this doesn’t mean we’ll be in for another snowstorm. It also doesn’t mean that we won’t get well into the 50s with more rain. Obviously, things can and will change as we head through the week. Consider our forecast for next weekend to be “low confidence” right now.

Several members of the GFS Ensemble show a secondary area of low pressure near or south of Southern New England next Sunday. Image provided by WeatherBell.

Monday: Sunshine fades behind thickening afternoon clouds. High 32-39.

Monday night: Partly to mostly cloudy, a few flurries may develop late at night near the east coast. Low 19-26.

Tuesday: More clouds than sun, a few rain or snow showers possible near the coast. High 29-36.

Tuesday night: Partly to mostly cloudy. Low 17-24.

Wednesday: Mostly cloudy, slight chance for a rain or snow shower, favoring areas north and west of Boston. High 34-41.

Thursday: Plenty of sunshine. High 40-47.

Friday: Sunshine dimmed by some afternoon high clouds. High 40-40.

Saturday: Plenty of clouds with showers possible, mainly late in the day and at night. High 47-54.

Sunday: Cloudy with a chance for more showers, mainly early. High 49-56.

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