forecast September 21, 2021 4:23 am Forecast: Mix of Sun and Clouds, Highs in the 70s Tuesday Today: Sun & clouds, slight chance PM sprinkle. Highs 70-75. Tonight: A few showers. Lows around 60. Wednesday: Humid, a shower or two. Highs around 75. US & World Videos 3:43 Look out for showers this afternoon in Boston 3:41 Cool air to linger over Boston into the weekend 3:17 Cooling back down, weekend turns wet in Boston 3:02 Dry and cooler in our region, with temps in the mid-50s 3:20 Weather forecast: Highs in the 50s