DAYS 1-5 (JULY 20-24)
The sunshine is back to start today, but it’s got a smoke screen – a high altitude one via Canadian and western US wildfires – nothing all that unusual for this time of year though. We’ll feel a bit of heat today today as we’re in a very warm air mass with moderate to high humidity. This may help fuel a couple isolated late day showers or thunderstorms, mainly west and north of Boston, which may still be around tonight as a disturbance moves through from the west. This sets up a potentially interesting day tomorrow, as a broad trough moves across the region with embedded disturbances, good for up to a few rounds of convection producing showers and thunderstorms. Some of the storms could potentially be strong to severe, so we’ll have to keep an eye on this during the day, anywhere from late morning to early evening. This system pushes off to the east at night, and we get a visit from Canadian high pressure bringing us the nicest day we’ve had in a while on Thursday. The next disturbance passes through the region Friday, but this one looks fairly weak and will only bring the chance of a few passing showers, mainly during the first half of the day as it stands now. Another area of high pressure brings nice weather back for Saturday.
TODAY: Smoke-filtered sun, eventually some clouds, and the chance of a late-day shower or thunderstorm mostly well north and west of Boston. Highs 80-87, cooler Cape Cod. Dew point upper 60s. Wind W 5-15 MPH.
TONIGHT: Variably cloudy with a chance of a shower or thunderstorm during the evening, then partly cloudy with patchy ground fog overnight. Lows 61-68. Dew point lower 60s. Wind W under 10 MPH.
WEDNESDAY: Variably cloudy. Episodes of scattered to numerous showers and thunderstorms. Some thunderstorms may become severe. Highs 76-83. Dew point middle to upper 60s. Wind W 5-15 MPH, variable and potentially stronger around storms.
WEDNESDAY NIGHT: Partly cloudy. Lows 57-64. Dew point falling to middle 50s. Wind NW 5-15 MPH.
THURSDAY: Mostly sunny. Highs 76-83. Dew point upper 50s. Wind NW 5-15 MPH.
THURSDAY NIGHT: Partly cloudy. Lows 58-65. Dew point middle to upper 50s. Wind W under 10 MPH.
FRIDAY: Partly sunny. Chance of showers, mostly morning through midday. Highs 73-80. Dew point near 60. Wind W 5-15 MPH.
FRIDAY NIGHT: Mostly clear. Patchy ground fog lower elevation areas. Lows 55-62. Dew point falling to middle 50s. Wind NW up to 10 MPH.
SATURDAY: Mostly sunny. Highs 76-83. Dew point upper 50s. Wind W 5-15 MPH.
DAYS 6-10 (JULY 25-29)
Westerly flow overall. Disturbances with shower chances somewhere in the July 25-26 and later July 27-28 time frames, but most of the time rain-free – a considerably drier pattern than recently. Temperatures near to below normal.
DAYS 11-15 (JULY 30 – AUGUST 3)
Overall pattern keeps us in a west to northwesterly air flow, with no major heat, temperatures near to slightly below normal, and a drier overall regime with fewer shower chances.