Memorial Day Weekend Outlook: May 28-31, 2021

Earlier this week we had said that we were being optimistic that the weekend would turn out mostly dry. Yeah, turns out that probably isn’t going to work out.

While high pressure is providing us with a terrific day today, it’s not going to last. Low pressure will move out of the Ohio Valley and ride along a stalled out frontal boundary to our south. That will spread clouds in late tonight, with a cloudy and rather cool day expected on Friday. Rain will develop Friday afternoon, and become heavy Friday night, especially south of the Massachusetts Turnpike. Rain will continue off and on Saturday, finally tapering off later in the day. With plenty of clouds and rain, temperatures on Saturday will be quite chilly for late May, with most places staying in the 50s.

Temperatures will be about 20 degrees below normal on Saturday. Image provided by

Clouds remain in place Saturday night, then another system moves in later Sunday into at least midday Monday. The first half of Sunday may not be that bad north of the Mass Pike, though still on the chilly side, and Memorial Day afternoon may not be a complete washout. But overall, on a scale of 1 to 10, we’d rate the Memorial Day weekend a 3 at this point. If there’s a bright side to this, after a fairly long dry spell, we’re going to get quite a bit of rain over the next few days, which will not only be good for your lawn and garden, but will wash most of the pollen out of the air (and off your cars). Many of the models may be overdoing the precipitation totals, but a solid 1-2 inches wouldn’t surprise us, especially south of the Mass Pike.

A solid 1-2 inches of rain (or more) is expected this weekend. Images provided by Pivotal Weather.

(Editor’s note: Per a request, we’re going to add a beach and boating forecast to the daytime portions of the Weekend Outlook through Labor Day Weekend)

Thursday night: Partly cloudy. Low 46-53.

Friday: Becoming mostly cloudy with showers developing in the afternoon. High 60-67. Offshore: East winds 10-15 knots, gusts to 20 knots, becoming southeast late in the day, especially for the North Shore. Seas 2-4 feet, visibility lower to 1-3 miles in late-day showers. Water temperatures range from the low 50s off the North Shore to the upper 50s south of the Cape and Islands.

Friday night: Showers becoming a steady rain overnight, breezy. Low 40-47.

Saturday: Showers taper off and end by early afternoon, windy, and chilly. High 48-55. Offshore: Northeast winds 15-25 knots, gusts to 40 knots, especially near Cape Cod. Seas 4-7 feet, visibility under 1 mile in rain.

Saturday night: Mostly cloudy, showers may redevelop along the South Coast toward daybreak. Low 42-49.

Sunday: A few breaks of sun across southern New Hampshire early, otherwise cloudy with showers spreading across the region from south to north. High 51-58. Offshore: Northeast winds 15-20 knots, gusts to 30 knots. Seas 4-8 feet, visibility 1-3 miles in showers.

Sunday night: Periods of rain and showers. Low 43-50.

Memorial Day: Cloudy with rain tapering off and ending by early afternoon. High 57-64. Offshore: North to northeast winds 10-15 knots, diminishing in the afternoon. Seas 3-6 feet, visibility 1-3 miles in showers.

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