Low pressure centered near southern New Jersey at midday is expected to move across southeast Massachusetts early tonight and then speed northeastward into the Maritimes Wednesday. Showers began to overspread the area early this morning and so far they have remained rather light. As the day wears on showers fill in and a more general area of rainfall keeps us wet through the afternoon and into the evening. As the low pulls away tonight the rain quickly comes to an end during the early evening, although a few lingering showers may hang around for a couple more hours. The trend later at night will be to dry out. Temperatures will likely fall near and slightly below freezing in many areas, especially away from the coast, and this may cause some black ice in areas where standing water remains. Some patchy fog may also develop. Rainfall totals less than one half inch locally, heavier amounts across southeast Massachusetts.
Wednesday brings us a nice mid January day with mild temperatures running 10 to near 15 degrees above average, light winds and a fair amount of sunshine. Clouds fill back in at night and by morning we could be dealing with more light precipitation, especially along the coastal plain. The reason, low pressure will develop off the Carolina coastline later Wednesday and Wednesday night, moving well offshore Thursday. The system is expected to be too far offshore to have much of an impact on the area with eastern sections essentially the only area getting some light precipitation out of this. We could wake Thursday morning to rain and snow showers mixed, changing to rain showers, possibly ending with a few flakes mixed in during the evening. Again, most of this action will occur along the coast, mainly east of Route 128/95.
The low pulls away and we dry out again on Friday with a return to sunshine and continued mild temperatures.
Yet another in a series of low pressure systems will move toward southern New England Friday night and early Saturday. This will bring another round of unsettled weather with snow showers Friday night, changing to rain showers along the coastal plain Saturday. Cooler air will begin to work in later Saturday night and Sunday as the low departs and this will mark the end of our week of mild temperatures. Highs on Sunday and Martin Luther King Day are projected to remain in the 30s which is average for mid January.
72 Hour Outlook:
Tuesday: Periods of light showers this morning, rain through the afternoon. Areas of fog developing. Mild, high temperatures in the upper 40s to 50 degrees. Light southwest winds 5 to 15 mph.
Tuesday night: Rain tapers off this evening with a few widely scattered showers. Becoming partly cloudy after midnight. Areas of fog. Cooler, lows in the low 30s, near 35 in Boston. Light northwest winds.
Wednesday: Becoming mostly to partly sunny. Mild, highs around 50 degrees. Light and variable winds.
Wednesday night: Becoming mostly cloudy. Lows in the upper 20s inland to low 30s on the shore.
Thursday: Along the coastal plain, chance of light rain and snow showers early, changing to rain showers. Mostly cloudy inland. Cooler, highs in the low 40s coast, mid 40s inland.
Thursday night: Slight chance of an evening rain or snow shower near the coast, otherwise remaining mostly cloudy. Lows in the low 30s.