DAYS 1-5 (JANUARY 17-21)
A sugar-dusting of snow fell in some areas overnight, and a little thicker coating in the South Coast region as a disturbance passed by the region. Today, high pressure noses in for a fair weather day and feeling fairly pleasant for mid January with above-freezing high temps and less wind. High pressure shifts offshore and a southerly wind increase for Saturday. But while this warms us up we end up cloudy as a cold front approaches. This front will bring a round of rain with the milder air in place Saturday late-day / early-night, before partial clearing arrives from west to east as the front pushes offshore. Colder air filters in Sunday, but we’ll have some diurnal temperature rise to overcome that along with some sun to start. But as colder air filters in from the north and west, clouds thicken back up as a low pressure wave rides up along the front that moved offshore the day before. This low pressure area will be moving quickly, but intensifying as it goes by, and this will result in a period of accumulating snow for Sunday evening to early Monday, with a widespread light to moderate snowfall expected. The lowest amounts are expected across Cape Cod and the Islands where some rain will be involved early on as the mild air holds on longest there. By the end of the event, we’ll be experiencing the onset of an arctic air invasion which will put us into the deep freeze late Monday and Tuesday, but with dry weather.
TODAY: Clouds give way to sun. Highs 30-37. Wind W up to 10 MPH.
TONIGHT: Clear evening. Increasing clouds overnight. Lows 21-28 evening. Temperatures rise slowly overnight. Wind W under 10 MPH evening, S 5-15 MPH overnight.
SATURDAY: Cloudy. Rain arrives late-day. Highs 40-47. Wind S 5-15 MPH, gusts 20+ MPH.
SATURDAY NIGHT: Cloudy with rain during the evening. Rain ends, clouds thinning overnight. Lows 32-39. Wind S 5-15 MPH, shifting to W.
SUNDAY: Limited sunshine in the morning, thicker overcast afternoon. Snow arrives late-day / evening except rain at first Cape Cod / Islands. Highs 35-42. Wind W up to 10 MPH shifting to N.
SUNDAY NIGHT: Overcast with snow except rain/mix changing to snow Cape Cod / Islands. Expected snowfall accumulation 3 to 6 inches, except 1 to 3 inches Cape Cod / Islands. Lows 18-25. Wind N 5-15 MPH.
MONDAY (MLK JR DAY): Sun/cloud mix. Highs 25-32 early, then falling through 20s. Wind N to NW 10-20 MPH, higher gusts.
MONDAY NIGHT: Clear. Lows 3-10. Wind NW 5-15 MPH, higher gusts.
TUESDAY: Sunny. Highs 13-20. Wind NW 5-15 MPH, higher gusts.
DAYS 6-10 (JANUARY 22-26)
Dry and very cold middle of next week (Wednesday-Thursday) while another storm tracks out to sea to the southeast of New England. Follow up system brings a snow chance late next week (Friday and/or Saturday). Fair, cold weather returns end of next weekend.
DAYS 11-15 (JANUARY 27-31)
One or two additional opportunities for snow in a continued cold pattern to end January.