Clouds will move out late Saturday, setting up a sunny Sunday

Cambridge, MA - 7/2/17 - A Sunday afternoon on the Charles River on Sunday, July 2, 2017. (v)
–Nicholas Pfosi for The Boston Globe

A cool mass of air arrived Thursday on a northeasterly wind and dropped temperatures well below typical July levels. Friday will continue on the cool side of normal with highs remaining under 70 degrees. This is unusual, but not record cold for this time of year.


Clouds (white) will finally clear late Saturday night, leaving sunshine for Sunday. Credit: Tropical Tidbits

In addition to the clouds, we do have the risk of more showers Friday. Since the air is coming off the ocean, the chances of any thunderstorms are low. Marine air tends to be more stable and not produce convective weather, thunderstorms in layman’s terms.

Highs Friday will be in the 60s. —Tropical Tidbits

Improving Saturday

Clouds are still going be tough to erode Saturday, but it will be warmer and only with a very small risk of a shower. It won’t be a great beach day, but it will be a nice day to get outside and, perhaps, play some field games, go for a run or hike, or play a round of golf.

Highs Saturday will reach near 80 in most areas, but be cooler along the coast. —Tropical Tidbits

Beach weather is back Sunday

Sunday is my pick of the weekend. Skies will be mainly sunny, and temperatures will reach into the 80s. Some inland areas could even nudge 90 degrees. Humidity will be moderate.

Vacation weather

The pattern returns to warm early next week along with typical summer humidity. I don’t see any more exceedingly cool days, and we could reach 90 or higher at least one day next week as a southwest flow of air dominates the weather picture. Overall, next week is better for vacation.

Follow David Epstein on Twitter @growingwisdom.