Most of this weekend will feature low clouds, spotty drizzle and fog patches, with above normal temperatures continuing. There may be some brightening of the skies at times, especially Sunday afternoon, but most of the time it will be dreary out. A brief appearance by the sun cannot be completely ruled on Sunday afternoon. The worst of the fog and drizzle will be early Saturday morning, again at night and early Sunday morning. A spot shower or two are also possible. High pressure offshore will slowly move away from the area over the weekend and give way to an approaching cold front Sunday night. Expect high temperatures Saturday in the upper 40s to the low 50s on Sunday. Overnight lows around 40 degrees tonight and staying really mild Sunday night as lows remain in the 40s. Winds will remain 10 mph or less through the weekend.
The approaching cold front will push through eastern Massachusetts Monday morning. A few showers are likely to accompany the front and then skies partially clear for the afternoon. It will become windy behind the front. High temperatures Monday will peak in the morning, near 50 degrees, before collapsing through the 40s during the afternoon hours. Monday night will be much cooler from recent nights and expect low temperatures to fall into the upper 20s by Tuesday sunrise.
Speaking of Tuesday we have a low level of confidence on the forecast. The cold front will settle to our south later Monday and Monday night, with a wave of low pressure likely developing along the front. The question becomes will the low move close enough to throw any precipitation at us during the day. We do expect clouds from this system, with just a chance of a sprinkle or mix of snow. However, the better chance for any precipitation will be over southeast Massachusetts and Cape Cod. Cooler temperatures, with highs in the low to mid 40s. Lows Tuesday night in the upper 20s inland to low 30s on the coast.
Wednesday should turn out partly cloudy as the low south of us moves out to sea. Behind this low we can expect temperatures to continue to trend cooler, returning to more seasonal levels. Highs in the upper 30s and lows in the mid to upper 20s.
Much colder air is expected by the end of next week and by Friday high temperatures might not get out of the 20s.