Zone Forecast Product for Southern New England National Weather Service Boston/Norton MA 104 AM EDT Fri Aug 7 2026 Southeast Middlesex MA- Including the city of Cambridge 104 AM EDT Fri Aug 7 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT FRIDAY... .REST OF TONIGHT...Mostly clear. Near steady temperature in the mid 70s. Southwest winds around 5 mph. .FRIDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the lower 90s. West winds around 5 mph. Chance of rain 20 percent. Heat index values up to 100. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the lower 70s. Southwest winds around 5 mph. .SATURDAY...Showers likely with a chance of thunderstorms. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. .SUNDAY...Sunny. Highs in the upper 80s. .SUNDAY NIGHT...Clear. Lows in the upper 60s. .MONDAY...Sunny. Highs in the upper 80s. .MONDAY NIGHT...Partly cloudy. Lows around 70. .TUESDAY...Partly sunny with a chance of showers. Highs in the upper 80s. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 40 percent. .WEDNESDAY...Partly sunny with a 30 percent chance of showers. Highs in the mid 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s. .THURSDAY...Partly sunny with a chance of showers. Highs in the mid 80s. Chance of rain 30 percent.