Zone Forecast Product for Southern New England National Weather Service Boston/Norton MA 402 PM EDT Sun Aug 9 2026 Southeast Middlesex MA- Including the city of Cambridge 402 PM EDT Sun Aug 9 2026 .TONIGHT...Clear. Lows in the upper 60s. West winds 5 to 10 mph. .MONDAY...Sunny, hot with highs around 90. Southwest winds 5 to 10 mph. .MONDAY NIGHT...Mostly cloudy in the evening, then clearing. Humid with lows in the upper 60s. Southwest winds 5 to 10 mph. .TUESDAY...Sunny. Highs in the upper 80s. West winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northwest winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs in the upper 80s. .WEDNESDAY NIGHT...Partly cloudy with a 40 percent chance of showers. Lows in the mid 60s. .THURSDAY...Partly sunny with a chance of showers. Highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers. Lows in the lower 60s. Chance of rain 40 percent. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs in the lower 80s. Lows in the upper 50s.