High pressure over Quebec and low pressure off the mid-Atlantic coast this morning are the two main weather features as we head into the long holiday weekend. The high pressure to our north will continue to drift over New England through the weekend as the low to our south drifts southward.
The precipitation shield from the mid-Atlantic low never reached the greater Boston area Friday and with the high pushing drier air southward we were able to capture a fairly decent day on Friday. This trend will continue into Saturday as we expect the clouds and rain from the ocean storm to remain south of the area not only for Saturday but for Sunday and Columbus Day as well.
However, there is another concern and that is a weak back door cold front sliding down from the north country and with it will come periods of cloudiness, with areas of drizzle and a slight chance of a sprinkle Saturday afternoon and evening, as low level moisture gets trapped near the surface. High temperatures only in the upper 50s on the coast to the low 60s inland. Northeast winds at 5 to 15 mph.
Tonight, areas of patchy fog possible, otherwise generally partly cloudy later at night and cool. Lows in the 40s. Light northeast winds under 10 mph.
Sunday, another chunk of drier air infiltrates the region as the high sinks further south and with that we should see a mostly sunny day. Any areas of patchy fog that may develop overnight will burn off around mid morning. Highs stay on the cool side, upper 50s coast to the low 60s at best through the interior. Winds continue northeast around 10 mph, shifting to east and southeast later in the day.
Sunday night, skies become mostly clear and as a result lows fall into the upper 30s to low 40s. Winds near calm.
Columbus Day, partly sunny. Highs in the 60s.
Monday night through Tuesday night, high pressure remains in control. Generally partly cloudy skies and seasonably cool. Highs in the 60s and lows in the 40s.
Wednesday, a cold front that is associated with low pressure back in the Great Lakes, slowly approaches the area. Skies become partly to mostly cloudy, highs in the upper 60s.
If the low pressure system off the mid-Atlantic coast had been allowed to drift northward the weather picture would have featured low clouds, cooler temperatures and periods of rain through a good portion of the weekend. Fortunately that is not the case so get out and enjoy the weekend which will be nice for checking out the foliage among other things.