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Author

Matthew Moll

Matthew Moll is a degreed meteorologist, founder of New England Weather Consulting, and a member of both the American Meteorological Society (AMS) and National Weather Association (NWA). He provides hyper-local, science-backed forecasts for communities across Massachusetts.

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Matthew's Latest Articles

Friday, June 19 – Breezy, less humid, and pleasant

A refreshing change arrives as drier air sweeps into the region behind Thursday’s storm system. Sunshine will mix with passing fair-weather clouds while west winds remain gusty throughout the day. Humidity levels will be noticeably lower. • High: 77–82°F | Low: 54–58°F | Wind: W 15–25 mph, gusting 30 mph • Sky: Mostly sunny • Precipitation: 0%

Thursday, June 18 – Windy with showers and strong thunderstorms possible

Showers will continue through the morning before conditions become increasingly unstable during the afternoon as warmer, more humid air moves into the region. A few thunderstorms may become strong to severe, especially during the afternoon and early evening, with damaging wind gusts the primary threat. An isolated tornado cannot be ruled out given the unusually strong wind shear. Outside of thunderstorms, gusty southerly winds will make for a blustery day. • High: 75–80°F | Low: 62–66°F | Wind: S 15–25 mph, gusting 30–40 mph • Sky: Mostly cloudy with occasional sunshine • Precipitation: 80% This forecast was updated at 10:22am to address current weather conditions.

Wednesday, June 17 – Warm with intervals of sunshine

Above-normal temperatures continue with a mix of sun and clouds. Most locations should remain dry, although a brief isolated shower cannot be completely ruled out. • High: 82–86°F | Low: 60–64°F | Wind: SW 5–10 mph • Sky: Mostly sunny to partly sunny • Precipitation: 20%

Monday, June 15 – Morning shower chance, then improving

A few showers may linger during the morning before conditions gradually improve during the afternoon. Sunshine should return at times later in the day with lower humidity arriving by evening. • High: 82–86°F | Low: 59–63°F | Wind: W 5–10 mph • Sky: Partly sunny • Precipitation: 40%

Waltham Weather Outlook: June 12 – June 20, 2026
Sunday, June 14 – Very hot with increasing clouds late

Likely the hottest day of the forecast period, with temperatures reaching the lower 90s and humidity increasing through the afternoon. Clouds gradually increase overnight as a weak disturbance approaches, with showers becoming likely toward daybreak Monday. • High: 91–95°F | Low: 64–68°F | Wind: SW 5–15 mph • Sky: Mostly sunny, becoming mostly cloudy overnight • Precipitation: 10% day, 60% late night

Saturday, June 13 – Hot and mainly sunny

Any overnight showers should move offshore early, leaving behind a hot and mostly sunny day. Humidity levels remain elevated, but conditions will be favorable for outdoor activities. Clear to partly cloudy skies continue overnight. • High: 88–92°F | Low: 63–67°F | Wind: NW 5–10 mph • Sky: Sunny to mostly sunny • Precipitation: 10%

Friday, June 12 – Hot with late thunderstorms possible

A summer-like day is expected with plenty of sunshine and increasing humidity. Temperatures will approach 90 degrees during the afternoon before clouds increase at night. Showers and thunderstorms become possible late in the evening and overnight, with locally heavy downpours and gusty winds possible. • High: 88–92°F | Low: 66–70°F | Wind: S 5–10 mph • Sky: Mostly sunny, becoming partly to mostly cloudy at night • Precipitation: 20% day, 60% night

Thursday, June 11 – Summer heat continues

Little change is expected as the warm ridge remains in control. Inland locations may again challenge the 90°F mark. • High: 88–93°F | Low: 64–69°F | Wind: SW 5–15 mph • Sky: Mostly sunny • Precipitation: 10%

Wednesday, June 10 – Hot and dry

A strengthening ridge aloft brings the first widespread chance of 90°F temperatures across the interior. Sunshine should dominate throughout the day. • High: 87–92°F | Low: 62–67°F | Wind: SW 5–15 mph • Sky: Mostly sunny • Precipitation: 5%

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