Forecast discussion: A strong high pressure system over North Carolina brought Boston a nice day of sun and clouds on Friday. We will have dry day on tap for Saturday, before a fast moving low pressure system brings some significant rainfall for Sunday. Meanwhile, some computer models want to develop some light to moderate snowfall for Thursday.
The high will protect us on Saturday, but we will see some breezy conditions. A warm front will move into New England via Canada, helping to bring some milder temperatures. Any cloud cover will give way to sunshine by the afternoon. By Sunday, a low pressure system developing in the Gulf of Mexico will move onshore early Sunday morning. We will see increasing clouds with drizzle and isolated showers Sunday afternoon, with steadier precipitation by the early evening. As we head into the overnight hours, we may see periods of heavy rain in isolated areas. There is the chance we could see a total of an inch to an inch and a half of total rainfall by Monday morning.
As we head into the New Year, we will see dry, sunny weather, but colder temperatures. An upper level low will swing down and cover most of the eastern U.S. We will feel cold temperatures on Tuesday, with temperatures in the middle to upper teens when the clock strikes midnight. A quick moving low pressure system will bring cloudy skies Wednesday morning, with some limited sunshine in the afternoon.
As we head into Thursday, the long range computer models continue to disagree on what to do with a developing low pressure center over the southern Great Lakes. The European and United Kingdom models do not even show a low developing, keeping dry weather. The Canadian model shows the low moving eastward, but only bringing some light snow on Thursday night. Meanwhile, the American model develops a second low off the Atlantic by Thursday night, which becomes the primary low by early Friday morning, and would bring light to moderate snow right into Friday evening. This would mean some significant snowfall totals. However, I am still not confident in the forecast. I am only mentioning it because this would be the worst case scenario of all the models. I will continue to watch the models, and update you any changes as we move into next week.
72 hour forecast:
Tonight: Partly to mostly cloudy with a low of 28.
Saturday: Mostly sunny by the late morning and breezy with a high of 43. Winds will come from the west-southwest at 13-16 mph.
Saturday night: Partly cloudy with a low of 32. Winds will come from the west-southwest at 7-10 mph.
Sunday: Overcast skies with showers arriving by 4 p.m. We will see a high of 43.
Sunday night: Rain, heavy at times, will end by 4 a.m. We will see strong winds, especially along the coastline. We will see a low of 34.
Monday: Partly sunny skies by the late morning and colder with a high of 39. Winds will remain strong and from the northwest.
Monday night: Partly cloudy with a low of 17.
New Year’s Eve: Mostly sunny until the early afternoon, with increasing clouds for the evening. Highs 22-25, lows 11-14.
New Year’s Day: Mostly cloudy in the morning, with partly sunny skies by the afternoon. Highs 20-23, lows 8-11.
Thursday: Cloudy with light snow developing by mid-morning. Highs 21-24, lows 11-14.
Friday: Light snow until 3 a.m., then moderate snow. Snow becomes lighter by mid-afternoon, before ending in the evening. Highs 27-30, lows 14-17.