DAYS 1-5 (JUNE 25-29)
A “cold front”, by definition, maybe more of a “dewpoint front” has passed through the region and you’ll notice that while today is still a warm early summer day, the air will not feel nearly as sticky as it did yesterday. There will be some cloudiness around at times, otherwise expect a decent amount of sun too. A couple of troughs will cross the region later tonight and Friday, both potentially triggering a few showers and thunderstorms. The greatest chance will be midday and afternoon Friday over the eastern half of the WHW forecast area (southeastern NH, eastern MA, and RI) as the passage of the second trough will coincide with maximum heating. The weekend dilemma: timing of next feature. Models have not been performing in a stellar fashion of late and they can easily lead a forecaster astray, so instead of going over the various scenarios they present, I’m sticking basically with the same idea of a warm front / cold front combo over the weekend, with the best chance of unsettled weather occurring later Saturday and into Sunday, but not to be translated into “we’re going to have a rainy weekend”, rather just noticed as an opportunity for a few episodes of showers and/or thunderstorms. When we get to Monday, an upper level low in the area may trigger some diurnal shower and thunderstorm activity.
TODAY: Sun/cloud mix. Highs 80-88. Wind W-SW 5-15 MPH.
TONIGHT: Partly cloudy. Risk of a passing shower or thunderstorm overnight, favoring southwestern NH, central MA, and eastern CT. Lows 61-68. Wind SW-W 5-15 MPH.
FRIDAY: Variably cloudy. Risk of showers, possibly a few thunderstorms, mainly during the afternoon, favoring southeastern NH, eastern MA, and RI. Highs 78-85. Wind W 5-15 MPH.
FRIDAY NIGHT: Partly cloudy. Lows 60-67. Wind W 5-15 MPH.
SATURDAY: Early sun, then variably cloudy. Risk of showers and possibly a thunderstorm mid afternoon on. Highs 83-90 except 76-83 Cape Cod. Wind SW 5-15 MPH.
SATURDAY NIGHT: Mostly cloudy. Scattered showers and isolated thunderstorms. More humid. Lows 63-70. Wind SW 5-15 MPH.
SUNDAY: Variably cloudy. Scattered showers and thunderstorms. Highs 79-86. Wind SW-W 5-15 MPH, higher gusts.
SUNDAY NIGHT: Partly cloudy. Lows 58-65. Wind W-NW 5-15 MPH.
MONDAY: Partly sunny. Isolated afternoon showers and thunderstorms. Highs 77-84. Wind N 5-15 MPH.
DAYS 6-10 (JUNE 30 – JULY 4)
Low to moderate confidence on this forecast, but I believe we will transition from a small scale blocking pattern (high pressure north, upper level low pressure nearby to south) with opportunities for diurnal showers and thunderstorms, into more of a zonal (west to east) flow with mainly dry weather during the course of this period. Temperatures near to slightly below normal.
DAYS 11-15 (JULY 5-9)
General zonal pattern, west to northwest air flow. Temperatures near to above normal, limited opportunities for any showers and thunderstorms.