We have a significant temperature spread at sunrise on this second day of September. A clear sky and light wind set up radiational cooling overnight, with many areas seeing low temperature in the upper 40s to lower 50s. Exceptions: Boston in the upper 50s due to a combo of urban effect and water’s influence, and Cape Cod around 60 due to the ocean water’s modifying effects. This set-up will repeat tonight which will be the coolest night in a while. But between these 2 cool nights come a very pleasant September day today, under a ridge of high pressure with lots of sun, dry air, light wind. After Saturday’s chilly start, the temperature rebound will be significant as high pressure sinks a little bit to the south a return flow of warmer air arrives. But humidity stays low, making for a great late summer day to start the holiday weekend. High pressure sinks further south and a stronger southwesterly air flow will be established on Sunday as a cold front approaches from the northwest. This set-up brings a stronger breeze but also very warm air and higher humidity. There may be a few pop up showers and thunderstorms ahead of the approaching front late in the day, but these look limited and mostly over interior southern NH to central MA. The cold front will then move across the region during the first half of Monday, based on current timing. This is when we have our greatest chance of showers, in my meteorological opinion. Some of our guidance has suggested a wetter scenario with more widespread rainfall from Monday into Tuesday, but I feel this may be over-done and am going with a more progressive system and a drying trend later Monday onward, with high pressure from eastern Canada being strong enough to accomplish this.<\/p>\n\n\n\n
TODAY: Sunny. Highs 73-80. Dew point upper 40s. Wind variable up to 10 MPH with coastal sea breezes.<\/p>\n\n\n\n
TONIGHT: Clear except ground fog patches forming interior lower elevations. Lows 47-54, warmer in some urban and immediate coastal areas. Dew point upper 40s to 50. Wind calm.<\/p>\n\n\n\n
SATURDAY: Sunny. Highs 76-83. Dew point rising through 50s. Wind S up to 10 MPH but coastal sea breezes possible.<\/p>\n\n\n\n
SATURDAY NIGHT: Mostly clear. Lows 60-67. Dew point upper 50s. Wind S-SW up to 10 MPH.<\/p>\n\n\n\n
SUNDAY: Partly sunny. An afternoon shower or thunderstorm possible, favoring interior southern NH and central MA. Highs 82-89. Dew point rising into 60s. Wind SW 5-15 MPH.<\/p>\n\n\n\n
SUNDAY NIGHT: Variably cloudy. Areas of fog forming. Chance of showers overnight. Lows 60-67. Dew point near 60. Wind variable to N 5-15 MPH.<\/p>\n\n\n\n
MONDAY \u2013 LABOR DAY: Variably cloudy. Chance of showers in the morning. Highs 70-77, coolest coast. Dew point near 60. Wind NE 5-15 MPH.<\/p>\n\n\n\n
MONDAY NIGHT: Partly cloudy. Lows 50-57. Dew point falling toward 50. Wind N to variable up to 10 MPH.<\/p>\n\n\n\n
TUESDAY: Partly sunny. Highs 72-79. Dew point 50s. Wind variable up to 10 MPH.<\/p>\n\n\n\n
DAYS 6-10 (SEPTEMBER 7-11)<\/p>\n\n\n\n
High pressure builds to the south with dry weather and a warm-up September 7-8. Next frontal boundary brings a shower chance September 9 before another area of high pressure moves in for the September 10-11 weekend with more fair weather. Offshore tropical activity may increase surf and ocean swells later in the period.<\/p>\n\n\n\n
DAYS 11-15 (SEPTEMBER 12-16)<\/p>\n\n\n\n
Overall pattern looks dry with variable but near to above normal temperatures as high pressure is the main driver of our weather. Continuing to monitor for offshore tropical activity which may at times increase surf along the coast.<\/p>\n","protected":false},"excerpt":{"rendered":"
We have a significant temperature spread at sunrise on this second day of September. A clear sky and light wind set up radiational cooling overnight, with many areas seeing low temperature in the upper 40s to lower 50s. Exceptions: Boston in the upper 50s due to a combo of urban effect and water’s influence, and … Continue reading Friday September 2 2022 Forecast (6:44AM)<\/span>