Forecast discussion: Due to the temperatures hovering in the middle 30’s, a Freezing Rain Advisory is in effect north and west of Boston until midnight. Some freezing rain has been creating accidents along Interstate 95 in Rhode Island throughout the afternoon and early evening. Temperatures will be slowly rising as warmer air moves into Southern New England tonight.
We will also be seeing some patchy to dense fog as well, as the warmer air moves over the colder snow on the ground. This meeting of the air masses will help create the patchy to dense fog. An advisory may be possible later this evening, but at this time the National Weather Service has no alerts. Temperatures may reach 50 degrees by late Monday morning, and two areas of low pressure will merge to bring showers throughout the morning. However, a very strong cold front will be passing through eastern Massachusetts by the late afternoon, and temperatures will begin to drop. Our precipitation may change to some freezing rain or snow showers before ending early Monday evening. Also, winds will be increasing to 20 mph Monday night, making wind chills feel like the lower single digits.
A strong high pressure system will bring some drier weather for Tuesday, although the colder air may help create some ocean effect snow showers for the Cape and Islands. High temperatures will not even make it to 20 degrees. Tuesday night will be quite cold, but not as cold as Saturday morning. Temperatures will fall into the upper single digits, with wind chills about 10 to 15 below zero.
Temperatures will slowly rise as we reach the middle of the week, and will see highs near freezing by Thursday. A very weak disturbance may bring the chance for a mix of rain and snow showers on Friday morning. Another weak disturbance brings the threat of rain showers for Saturday. We will remain well above freezing entering the weekend, as high pressure offshore brings south to southwest winds into New England.
72 hour forecast:
Tonight: Patchy to dense fog with showers arriving after midnight. We will see a low of 39, with temperatures rising into dawn.
Monday: Fog burning off by the afternoon. Rain/showers changing to snow showers by the mid-afternoon. We will see a high of 49 before temperatures drop throughout the afternoon. Winds will turn to the west-southwest at 12-15 mph.
Monday night: Windy with snow showers end by 9 p.m. with mostly cloudy skies the rest of the night. It will be much colder with a low of 16. Winds will come from the west at 19-24 mph.
Tuesday: Partly sunny and very cold with the high only reaching 18. The Cape and Islands may see some ocean effect snow showers through the day.
Tuesday night: Partly cloudy with a low of 7.
Wednesday: Partly to mostly sunny. We will see a high of 21.
Wednesday night: Partly cloudy with a low of 19.
Thursday: Mostly sunny until the early afternoon, with mostly cloudy skies by the evening. Highs 32-35, lows 22-25.
Friday: Overcast with passing snow/rain showers. Highs 36-39, lows 26-29.
Saturday: Partly sunny with possible showers by the afternoon. Highs 40-43, lows 29-32.
Sunday: Mostly sunny. Highs 41-44, lows 31-34.