5:37PM
SUMMARY…
In came the back-door cold front Friday morning and the cool ocean air along with it over southeastern NH and eastern MA. It has taken longer for the front and somewhat cooler air to push further west away from the coast. In fact, as of mid afternoon Friday, the temperature ranged from near 50 along the eastern coast of MA to near 90 in Hartford CT. Though a difference of nearly 40 degrees over about 200 miles, this is not all that unusual an occurrence for this part of the country at this time of year. Now as we get into evening area of low clouds and fog are coming in from the ocean and this will become more widespread during the later evening and tonight as the marine layer becomes established. This low overcast and areas of fog will burn off in most areas Saturday as the wind turns more to the south, but this southerly wind off the water just south of New England means that the low clouds will be much slower to break along the South Coast and it may never completely clear there. Temperatures respond and warm up inland but less quickly along the coast. By Sunday, a southwesterly wind flow means warmer for most areas except still somewhat cooler along the South Coast and especially across Cape Cod. A frontal system to the north and west of the region is expected to cause showers/thunderstorms in northern New England but none of those will reach southern areas as it looks now, meaning that Mother’s Day will be rain-free across southeastern New England. By Monday, this front pushes a little closer with a slight risk of a spot shower or storm but overall most of the activity should still remain to the west and north. By Tuesday, finally the front swings through as it is kicked along by a disturbance from the west. At the same time, remnant moisture from the first named tropical system of the year, Ana, will be making a close pass though most of its moisture should remain offshore just to the southeast. By the middle of next week look for a return to somewhat cooler and drier weather, with a slow warm-up commencing by the end of the week as high pressure dominates.
SOUTHEASTERN NEW ENGLAND FORECAST…
TONIGHT: Low clouds and patchy fog take over. Lows 47-55. Wind NE to SE 5-15 MPH.
SATURDAY: Low clouds and areas of fog give way to sun by afternoon in most locations except low clouds persisting southern RI and south coastal MA including Cape Cod. Highs 58-65 coast, 66-74 interior areas. Wind SE to S 5-15 MPH.
SATURDAY NIGHT: Partly to mostly cloudy. Patchy fog. Lows 52-60. Wind light S to SW.
SUNDAY – MOTHER’S DAY: Mostly cloudy to partly sunny South Coast including Cape Cod, partly cloudy to mostly sunny elsewhere. Highs in the 80s interior areas ranging down to the 60s South Coast. More humid. Wind SW 10-20 MPH with higher gusts.
MONDAY: Partly sunny. Isolated showers/thunderstorms possible mainly interior MA and southern NH late. Lows 58-66. Highs 67-75 South Coast, 75-83 elsewhere.
TUESDAY: Mostly cloudy. Scattered showers/thunderstorms. Lows in the 60s. Highs in the 70s.
WEDNESDAY: Partly cloudy. Breezy. Lows in the 50s. Highs in the 60s.
THURSDAY: Mostly sunny. Lows 45-50 interior, 50s coast. Highs 60s coast, 70-75 interior.
FRIDAY: Sunny. Lows in the 50s. Highs 60s coast, 70s interior.