Forecast discussion: Once again, despite mostly cloudy to overcast skies on Saturday, Boston continued with dry weather. Over the next seven days, Boston will be seeing a series of storm systems pass through the area. We will see a little precipitation on Sunday and Monday. However, a major storm will be moving through the area early Wednesday.
Like Friday, the weather was mostly cloudy skies, with some sunshine breaking through the clouds at times. For tonight, we will be seeing overcast skies, as a cold front over the Ohio River Valley slowly moves towards the east. By Sunday morning, there will be some isolated showers moving into eastern Massachusetts, but the majority of the precipitation will miss our area. Instead, the weak ridge of high pressure will push the precipitation off to our north and west. It will also be the mildest day of the week, as high temperatures reach the upper 40’s to lower 50’s.
As we go into Sunday night, the cold front over the Ohio River Valley will be passing through the area. Moisture will be picked up off the Atlantic, and eastern Massachusetts will see some snow showers by the early afternoon. The front will move offshore by Monday evening, and skies will be partly cloudy. Also, colder air from Canada will move back over New England, as high temperatures on Monday only reach the middle 30’s.
The strongest low pressure system is slowly forming over western Texas at the moment. The low will follow the cold front, and will gain upper level dynamics and moisture from the Gulf of Mexico. The computer models continue to agree on the low’s general track. But, the models continue to disagree on the precipitation type as it moves over the state. Right now, the models agree it will start off as light to moderate snow right at midnight. We could see 2-4 inches before the precipitation changes over to sleet. The Cape and Islands will only see an inch of snow before the changeover to sleet. By the mid to late morning, the precipitation will change to plain rain. The rain could be heavy at times, especially during the mid-afternoon hours. As the cold front passes through, colder air will return. The precipitation will then change back to a snow/freezing rain mix before changing back to snow showers. All precipitation will end by midnight.
For the rest of the week, a strong high pressure system will remain over the Northeast U.S. Temperatures will slowly rise from the middle to upper 20’s on Thursday to the middle 30’s next Saturday. However, overnight lows will be cold, with lows in the lower teens on Thursday, but slowly rising to the upper teens to lower 20’s by next Saturday.
72 hour forecast:
Tonight: Mostly cloudy with possible fog after 2 a.m. and a low of 35.
Sunday: Isolated showers through the morning; otherwise, expect mostly cloudy skies. We will see a high of 48 with west winds of 8-11 mph.
Sunday night: Cloudy skies with scattered snow showers before 2 a.m. It will be colder with the low falling to 29 and north-northwest winds of 7-10 mph.
Monday: Flurries for inland areas, with light snow showers for the Cape and Islands, during the morning. Light snow moves in for the early afternoon everywhere. Snow showers end by the end of the evening commute. An inch of snow is possible. We will see a high of 36.
Monday night: Partly cloudy with a low of 25.
Tuesday: Mostly sunny with a high of 37.
Tuesday night: Moderate snow by 2 a.m. with 2-4 inches possible. Snow changes to sleet by 6 a.m. We will see a low of 28.
Wednesday: Sleet changing over to rain by mid-morning. Rain could be heavy at times. Precipitation becomes light snow showers by 7 p.m. before ending by midnight. Highs 35-38, lows 19-22.
Thursday: Partly to mostly sunny. Highs 27-30, lows 12-15.
Friday: Mostly sunny. Highs 27-30, lows 16-19.
Saturday: Partly sunny. Highs 32-35, lows 18-21.