Weather changes will be plenty for the next several days. First a hot and breezy Wednesday not without a thunderstorm threat in the afternoon and evening, especially northwest of Boston where some strong to severe storms are possible. This will be triggered by a cold front sliding in from the Great Lakes and nearby Canada. The details of the thunderstorms will be worked out and updated through comments and on the Facebook page (for those who have access to it).
By Thursday, the front responsible for the storms will also be introducing much cooler air, but the front itself maybe sluggish so clouds and a shower threat will linger especially in eastern areas for a while before improvement arrives. High pressure will bring this improvement as it starts to build in, and then will deliver a couple great days Friday and Saturday, with lower humidity but a warming trend. And then the next change will be taking place as a trough of low pressure, again rather deep for the time of year, drops out of Canada into the Great Lakes and Midwest and sends increasing moisture this way during Sunday and Monday, at which time some significant shower and thunderstorm activity is likely to develop. The trough should start to lift into southeastern Canada and weaken by next Tuesday with improvement but still some risk of a shower as humidity will likely be on the higher side.
Forecast for southeastern New England…
TONIGHT: Areas of low clouds and fog, especially coastal areas and Cape Cod. Clear but hazy elsewhere. More humid. Lows 65-70. Wind SW 5-15 MPH.
WEDNESDAY: Any low clouds and fog burning off early then hazy sunshine but developing clouds in the afternoon, some possibly building into thunderstorms and a few areas mainly northwest of Boston, and also a line of storms possibly approaching from the west by evening. Any storms may be strong. Humid. Highs from near 80 Cape Cod and 80s South Coast to around 90 elsewhere. Wind SW 10-20 MPH with higher gusts.
WEDNESDAY NIGHT: Variably cloudy with a chance of showers and thunderstorms. Patchy fog late. Humid. Lows 65-70. Wind variable 5-15 MPH, locally gusty near storms.
THURSDAY: Mostly cloudy with a chance of showers through midday then slow clearing west to east. Lowering humidity. Highs in the 70s. Wind mostly N to NE 5-15 MPH.
FRIDAY: Mostly sunny. Low 59. High 80.
SATURDAY: Mostly sunny. Low 63. High 85.
SUNDAY: Increasing clouds. PM showers. Low 65. High 82.
MONDAY: Mostly cloudy. Numerous showers/thunderstorms. Low 65. High 80.
TUESDAY: Partly sunny. Isolated showers. Low 67. High 82.