Metro Boston, North Shore and Metro West: Saturday featured a mix of clouds and sun through the day with temperatures ranging from the upper 70s to mid 80s. After a mainly cloudy overnight we wake this Sunday morning with overcast skies and temperatures hovering around 70 degrees.
A sprawling area of several low pressure systems, from southwestern Quebec to the Great Lakes and Plains States will all be players in combining to bring our area unsettled weather over the next couple of days. A warm from lies southwest of New England this morning and will make little progress toward us through today. A line of showers and thunderstorms are moving through the Hudson Valley and across the metro New York City area early this morning, with additional showers in northern New England.
Although there is a chance of a bit of sun this afternoon the main theme today will be mostly cloudy skies with a chance of showers and thunderstorms. The first batch of precipitation could reach the local area by late this morning with a second impulse of showers and storms late today and or tonight. There is a slight risk of a strong to severe thunderstorm that could produce gusty winds, heavy downpours and frequent lightning. High temperatures today close to 80 degrees with humid conditions. Light winds this morning, becoming south 8 to 18 mph, possible higher gusts in the afternoon. Lows tonight a muggy 70 degrees or so. South winds 8 to 15 mph, diminishing to 5 to 10 mph.
The beginning of the work week, or vacation for some, starts off wet. The warm front lifts northward into the forecast area. Clouds prevail Monday with showers likely and a few thunderstorms as well. Most of the activity likely through midday, then becoming intermittent in the afternoon. Again, watch for the possibility of a stray severe storm. A few periods of sun possible in the afternoon. It remains humid with high temperatures again near 80.
The threat of showers begins to diminish Monday night as low pressure north of us swings a cold front through the area and offshore by Tuesday morning. The front will be a slow mover and then is expected to stall offshore by mid week. Lows Monday night in the 60s.
Tuesday, behind the departing front, skies improve and it should be a partly cloudy day on average. Less humid, highs mid 70s on the beach to a few low 80s inland.
Showers will be a threat across New York State and also well offshore for most of the week. In between we should stay mainly dry but there is a slight chance of a shower on any given afternoon. Otherwise, generally partly cloudy skies through the work week. A word of caution, if the frontal boundary inches west a bit and a few disturbances ripple along the front this will mean more clouds than sun and a better chance of showers during the week. Highs from the mid 70s to low 80s, coolest near the coast. Overnight lows in the upper 50s to mid 60s, coolest inland.
North Shore beach outlook:
Sunday: Patchy fog and lots of clouds. Showers and thunderstorms later this morning and early afternoon, reemerging late day or this evening. Slight chance of a strong to severe thunderstorm that would produce heavy downpours and gusty winds. A few periods of sun possible in between the shower activity. High temperatures in the mid to upper 70s. Water temperatures mid 60s. Winds south 10 to 20 mph this afternoon. High tide just after midday. Surf 2 to 4 feet with a moderate chance of rip currents. UV Index moderate.