Zone Forecast Product for Southern New England National Weather Service Boston/Norton MA 704 PM EDT Sat Jun 27 2026 Southeast Middlesex MA- Including the city of Cambridge 704 PM EDT Sat Jun 27 2026 .TONIGHT...Partly cloudy with a chance of showers this evening, then mostly cloudy after midnight. Patchy fog after midnight. Lows in the lower 60s. East winds around 5 mph this evening, becoming light and variable. Chance of rain 50 percent. .SUNDAY...Mostly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Patchy fog in the morning. Highs in the upper 70s. East winds 5 to 10 mph. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 60s. Southeast winds around 5 mph in the evening, becoming light and variable. .MONDAY...Mostly sunny. Highs in the mid 80s. Northeast winds around 5 mph, becoming east around 5 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 60s. South winds around 5 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny. Hot with highs in the lower 90s. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of rain 40 percent. .WEDNESDAY...Partly sunny with a chance of showers and thunderstorms. Hot with highs in the upper 90s. Chance of rain 30 percent. Heat index values up to 110 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Hot. Highs around 100. Lows in the mid 70s. Heat index values up to 110. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. A chance of showers. Hot. Highs in the upper 90s. Lows in the lower 70s. Chance of rain 30 percent. Heat index values up to 105. .INDEPENDENCE DAY...Mostly sunny. Hot with highs around 90.