Forecast discussion: A warm front passed through eastern Massachusetts Thursday afternoon, helping to lower the cloud bank and produce some dense fog for the evening commute. The fog will remain thick through the evening, as a Dense Fog Advisory remains in effect for all of Massachusetts until 3 a.m.
We are awaiting a cold front to push through Friday morning. We will see some showers develop during the overnight hours, as the front inches closer to Southern New England. Heavier precipitation will arrive during the late morning and afternoon hours, and will continue into the evening. By Friday night, colder air will help change the precipitation to a frozen variety. At this time, it appears to be some sleet, although some wet snow showers may mix in from time to time. The frozen precipitation changes back to plain rain by early Saturday morning, before all precipitation ends by the mid-morning. We should see some sunshine before sunset, as skies continue to clear going into Saturday evening.
We will see sunshine during the daytime hours on Sunday, and it will be colder. Clouds will be increasing throughout the evening. This will be due to a developing area of low pressure around the Tennessee River Valley. The system will push high pressure into the Atlantic, and bring another round of winter precipitation into the region. This time, it will begin as some wet snow showers, before mixing with sleet and freezing rain. This will continue into the morning commute on Monday morning, so you may want to take some extra time to arrive at work or school. Also, please take extreme caution while driving. Before lunchtime, precipitation should begin to change over to all rain. The showers will end by Monday evening.
For the rest of the forecast period, we will see partly to mostly sunny skies and cold temperatures. High pressure will influence our weather pattern, with daytime high temperatures only near freezing, with low temperatures in the upper teens.
72 hour forecast:
Tonight: Patchy to dense fog with drizzle going to scattered showers developing around 3 a.m. We will see a low of 48.
Friday: Overcast with light to moderate rain and a high of 50. Temperatures will actually drop into the middle 40’s by sunset. Winds will come from the northwest at 7-10 mph.
Friday night: Showers/light rain before changing over to sleet around 2 a.m. It will become colder with a low of 34 with north winds at 7-10 mph.
Saturday: Sleet/snow mix changes to rain by the early morning before all precipitation ends by mid-morning. Partly cloudy skies expected by the early afternoon. We will see a high of 40.
Saturday night: Partly cloudy with a low of 23.
Sunday: Mostly sunny during the daytime hours, with overcast skies by the evening. We will see a high of 33.
Sunday night: Light snow starting around 3 a.m. with a low of 30.
Monday: A mix of sleet, snow, and freezing rain by 6 a.m. changing to all rain by late morning, with showers ending in the evening. Highs 42-45, lows 31-34.
Tuesday: Partly sunny. Highs 35-38, lows 19-22.
Wednesday: Mostly sunny and breezy. Highs 30-33, lows 17-20.
Thursday: Mostly sunny. Highs 30-33, lows 16-19.