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Weather

Wednesday, June 24 – Pleasant and seasonable

High pressure should provide another beautiful early summer day with sunshine, comfortable humidity, and light breezes. • High: 76–81°F | Low: 56–60°F | Wind: WNW 5–15 mph • Sky: Mostly sunny • Precipitation: 0%

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Tuesday, June 23 – Improving conditions

Lingering morning clouds or a few showers are possible depending on the departure of Monday’s storm system. Conditions should gradually improve during the afternoon with increasing sunshine and comfortable humidity returning. • High: 75–80°F | Low: 57–61°F | Wind: W 10–15 mph • Sky: Partly sunny • Precipitation: 20%

Monday, June 22 – Watching for a soaking rainfall

Forecast confidence decreases early next week, but there is increasing potential for a widespread, beneficial rainfall as low pressure develops nearby. If the system tracks favorably, periods of rain could continue through much of the day. Temperatures should remain seasonably mild. • High: 72–77°F | Low: 60–64°F | Wind: E to SE 5–15 mph • Sky: Cloudy • Precipitation: 70%

Waltham Weather Outlook: June 22–26
Sunday, June 21 – Increasing clouds late

Much of the day should remain dry with seasonable temperatures and relatively comfortable humidity. Clouds may increase during the afternoon and evening as the next weather system begins approaching. An isolated late-day shower cannot be ruled out. • High: 77–82°F | Low: 58–62°F | Wind: SW 5–15 mph • Sky: Partly sunny becoming mostly cloudy • Precipitation: 30%

Saturday, June 20 – Comfortable early summer weather

High pressure remains in control with another dry and pleasant day. A few fair-weather clouds are expected, but sunshine will dominate. Gusty west winds continue, although they should be somewhat lighter than Friday. • High: 78–83°F | Low: 56–60°F | Wind: W 10–20 mph, gusting 25 mph • Sky: Mostly sunny • Precipitation: 0%

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%

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