Just in time for the autumnal equinox, the first hints of fall have arrived in the form of cooler weather. After last week’s unseasonably warm weather, a cold front passed through the Boston area on Sunday morning, bringing with it a cool northwesterly breeze. This breeze has ushered in a colder Canadian air mass that has brought temperatures down to around their normal levels. For this time of year, the normal high temperature is 70°F (21°C), while the normal low is 55°F (13°C). Indeed, the highs and lows for the next few days will be very close to those marks, as a strong high pressure system settles in over the northern East Coast.
The high pressure will make for relatively calm weather, with no precipitation expected for the remainder of the week. While onshore flow will result in considerable cloudiness today, sunshine will return in time for the first day of astronomical autumn tomorrow (the equinox occurs at 4:21 AM).
This week’s particularly pleasant pattern stands in stark contrast to the weather of this day on 1938, when the Great New England Hurricane struck Massachusetts with 87 mph winds, causing the deaths of over 600 people.