Boston’s Weather Outlook: Late‑May’s Shifting Skies

Boston is heading into the tail‑end of May with a bit of a mood swing in the atmosphere. After a stretch of dry, sunny days, the radar’s now hinting at some late‑season moisture making its way inland.

Monday kicks off with partly cloudy skies and a pleasant high near 72°F (22°C). It’ll feel nice enough for a jog along the Charles, though the humidity might creep up a touch in the late afternoon.

Tuesday brings a change – expect intermittent showers across the metro area, especially in the western suburbs. The high should dip to about 68°F (20°C), and you’ll probably need a light jacket if you’re out after sunset.

Mid‑week looks a bit brighter. Wednesday is slated to be mostly sunny, with highs nudging up to the low‑70s again. If you’ve got plans for the harbor, it’s probably a good day to make them.

Thursday, however, throws a curveball. The forecast calls for a 40‑percent chance of thunderstorms, mainly after 4 p.m. The storms should stay brief, but they could bring gusty winds – think 25‑30 mph – and a quick drop in temperature.

Friday eases back into a cooler, more comfortable rhythm. Highs hover around 65°F (18°C), and the sky stays mostly clear. It’s a decent night for a rooftop dinner, as the evenings will feel crisp but not biting.

The weekend is where the rain returns. Saturday looks wet, with scattered showers and a low chance of an isolated thunderstorm. Temperatures will stay in the mid‑60s, so an umbrella is a smart move. Sunday, on the other hand, may clear up just enough for a few sunny spells, though clouds will linger, keeping the high around 68°F (20°C).

All told, late‑May in Boston is a bit of a toss‑up – warm enough to enjoy the outdoors, yet unpredictable enough that you’ll want to keep an eye on the sky before you head out. Keep a light jacket handy, and don’t forget that umbrella for the weekend.