DAYS 1-5 (AUGUST 23-27)
A pretty decent production of rainfall by the warm front portion of our low pressure system yesterday resulting in up to a few inches of rain in the jackpot areas of southeastern MA, especially Plymouth County. Other areas enjoyed the benefit of 0.50 to 1.50 inch but there were some “have-nots” that ended up under the 0.50 inch mark. Such is the nature of summertime rain. But in general, a helpful event for the drought. We’re far from ending it, but anything we get is definitely a positive. And some areas are in for more today. But this time the activity, associated with an approaching cold front, will be more in the form of classic showers and thunderstorms. After a morning that starts out with lots of clouds, areas of fog, and a cool mugginess, the wind will pick up and help clear us out at least somewhat, and enough to get some decent daytime heating. We’ll see some initial showers and possible thunderstorms pop up in a south southwest air flow well ahead of the cold front, and some of these can cause brief downpours. These will be around from midday through the first part of the afternoon. Later in the afternoon and into evening, a couple or a few clusters of showers and thunderstorms will have more of a west-to-east movement across our region, with activity most favored west of and up to the I-95 corridor, with less of a chance of the activity pushing into southeastern MA and RI before it has weakened and is in the process of dissipating. The frontal boundary will pass by the region by late evening but may linger a bit just offshore Wednesday, which will feature some additional clouds. Also, a little disturbance passing by to the north may trigger a couple isolated pop-up afternoon showers mainly over interior locations later in the day, but the probability of any location seeing that is very low. High pressure will dominate the weather Thursday with very warm, dry air. Friday, the high pushes offshore and a cold front approaches. It will be a very warm and slightly more humid day and with the approach of the front, add in the chance for a shower or thunderstorm, current timing favoring those being west and north of Boston later in the day with areas to the southeast only seeing remnant showers sometime in the evening or night. Either way, the front pushes through and high pressure from Canada builds to our north and sends a cooling north to northeast wind into our area to start the weekend, with fair weather.
TODAY: Variably cloudy. Scattered to numerous showers and possible thunderstorms during the afternoon, favoring areas in the I-95 corridor westward. Any storms can lead to brief road / parking lot flooding. Highs 77-84. Dew point upper 60s to near 70. Wind SW 5-15 MPH, can be variable and briefly gusty around any shower or storms.
TONIGHT: Mostly cloudy. Chance of showers. Patchy fog. Lows 60-67. Dew point falling to near 60. Wind W 5-15 MPH.
WEDNESDAY: Sun/cloud mix. Very slight shower threat interior areas afternoon. Highs 76-83. Dew point 50s. Wind NW 5-15 MPH.
WEDNESDAY NIGHT: Variably cloudy. Lows 58-65. Dew point 50s. Wind N up to 10 MPH.
THURSDAY: Partly cloudy. Highs 77-84, coolest coast. Dew point 50s. Wind variable up to 10 MPH with coastal sea breezes.
THURSDAY NIGHT: Mostly clear. Patchy ground fog overnight. Lows 60-67. Dew point upper 50s to 60. Wind SW up to 10 MPH.
FRIDAY: Sun/cloud mix. Late-day showers and thunderstorms possible, favoring areas north and west of Boston. Highs 83-90. Dew point lower to middle 60s. Wind SW 5-15 MPH.
FRIDAY NIGHT: Partly cloudy. A shower or thunderstorm possible evening. Lows 60-67. Dew point falling to upper 50s. Wind shifting to NW 5-15 MPH.
SATURDAY: Sunny to partly cloudy. Highs 77-84, coolest coast. Wind N to NE 5-15 MPH.
DAYS 6-10 (AUGUST 28 – SEPTEMBER 1)
Ironed out the uncertainty and August 28 looks like it will be a nice finish to the final weekend of August with high pressure shifting east of New England, fair weather and a southeasterly air flow, keeping the coast coolest while it warms nicely inland. Fair and slightly more humid weather August 29 and then we’ll watch for a frontal boundary to approach the region with a shower and thunderstorm threat sometime between late August 30 and late August 31 – timing uncertain, and a possible shot of cool/dry air to start September.
DAYS 11-15 (SEPTEMBER 2-6)
Early indications are for high pressure to dominate the first several days of September with dry weather, starting seasonable then warming up.