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Boston weather: A decent Sunday, but some risk for precipitation

Forecast discussion: Despite a high pressure system over the state of Michigan, Boston saw grey skies and even some showers. The clouds cover and showers were due to a weak disturbance moving into northern New England. It is helping to trigger showers across eastern Massachusetts at the moment. This will continue into the overnight.

Despite the high pressure center moving slowly to the east, the disturbance will slowly move further south. We will continue to see grey skies and peeks of sunshine. However, the disturbance may create some isolated showers and a possible thunderstorm, especially in the middle of the afternoon. Any thunderstorms may be strong enough to produce some small hail and gusty winds. The disturbance will finally move offshore late Sunday night, and the high will dominate our weather on Memorial Day.

The holiday looks fantastic, with mostly sunny skies and temperatures will reach the lower 80’s. This will make for the perfect cookout or parade. But, as we head into the evening, we will begin to see increasing clouds. A cold front will be moving over the region, and we will see the risk of showers and thunderstorms through the early afternoon into the late evening. Our warm temperatures on Monday will return to slightly below seasonable temperatures on Tuesday.

As we head into Tuesday night, we are going to feel some very cold temperatures for the last week of May. Low temperatures may fall into the lower 50’s in some spots, with high temperatures in the middle 60’s on Wednesday. Temperatures will warm up into the upper 60’s to lower 70’s on Thursday.

As we head into the weekend, a new cold front will slowly work its way into Southern New England. We should see showers arrive by the late morning on Friday, The front will be moving through rather quickly, as the front moves offshore by the early part of next Saturday morning. A new high pressure system will bring back mostly sunny skies during the daytime.

72 hour forecast:

Tonight: Cloudy with isolated showers and a low of 52.
Sunday: Partly sunny skies in the morning, with the chance for showers and an isolated thunderstorm by 3 p.m. Any thunderstorms could produce small hail and gusty winds. We will see the high of 69 with winds shifting to the southeast at 7-10 mph.
Sunday night: Isolated showers and thunderstorms end around 2 a.m. with clearing skies. We will see a low of 56 with winds turning to the southwest at 7-10 mph.
Memorial Day: Mostly sunny and warmer with a high of 82.
Monday night: Increasing clouds with a low of 61.
Tuesday: Partly sunny in the morning, with overcast skies and showers/ thunderstorms starting by 1 p.m. We will see a high of 71.
Tuesday night: Showers end by 11 p.m. with mostly cloudy skies. We will see a low of 54.

Extended Forecast:
Wednesday: Mostly sunny. Highs 63-66, lows 49-52.
Thursday: Mostly sunny. Highs 69-72, lows 51-54.
Friday: Becoming cloudy with showers/light rain arriving by the late morning. Highs 72-75, lows 55-58.
Saturday: Showers end by 2 a.m. with mostly sunny skies during the day. Highs 71-74, lows 55-58.