DAYS 1-5 (SEPTEMBER 30 – OCTOBER 4)
This final day of September will be a cool one and an upper level low spinning over the region (center just to the east and north) which is sending a band of showers across the South Coast as the day dawns will also provide the instability for some pop up afternoon / early evening showers later today. This low will slide to the east enough so that we will have dry weather Friday, and then the high pressure area approaching from the west is going to have its top pinched from 2 sides – from the upper low still not that far away in eastern Canada, and the approach of moisture from a new system to the west. This interaction probably means varying amounts of clouds for the weekend, but at this time I expect the dry air to be substantial enough to keep away a rain threat. That probably can’t hold any longer by Monday, which is looking more like a wet day at this time. And once again, if you have plans near the coast this weekend, be aware of increased ocean swells / surf and rip current risk as a result of distant offshore Hurricane Sam.
TODAY: Variably cloudy. Scattered to numerous showers South Coast early. Isolated to scattered showers redeveloping during the afternoon hours. Highs 58-65, coolest in higher elevations of southwestern NH through central MA. Wind N 5-15 MPH.
TONIGHT: Clearing. Lows 46-53 except 38-45 interior lower elevations. Wind NW 5-15 MPH, diminishing.
FRIDAY: Sunny start then a sun/cloud mix. Highs 60-67. Wind NW 5-15 MPH.
FRIDAY NIGHT: Mostly clear. Lows 38-45 interior areas, 45-52 immediate coast and urban centers. Wind N under 10 MPH.
SATURDAY: Partly sunny. Highs 61-68. Wind W up to 10 MPH.
SATURDAY NIGHT: Partly cloudy. Lows 43-50. Wind WSW under 10 MPH.
SUNDAY: Partly sunny. Highs 65-72. Wind SW 5-15 MPH.
SUNDAY NIGHT: Mostly cloudy. Chance of rain overnight. Lows 48-55. Wind SW to variable up to 10 MPH.
MONDAY: Cloudy. Chance of rain. Highs 58-65. Wind variable to E 5-15 MPH.
DAYS 6-10 (OCTOBER 5-9)
The beginning of this period may start unsettled before high pressure from the north wins the battle and we turn drier with fairly seasonable temperatures. Still have to keep an eye on low pressure to the south.
DAYS 11-15 (OCTOBER 10-14)
High pressure should be more dominant with drier weather in this stretch of time, and we should also start to see a transition to more westerly flow again in the larger scale pattern.