Boston August 7, 2021 1:06 am Weather Forecast: Highs Near 90 Saturday: A veil of clouds in front of the sun. Slight chance isolated afternoon shower. Highs near 90. Sunday: An increasing chance of showers and thunder. Highs around 80. US & World Videos 3:11 So how long is Boston's gorgeous weather going to last? 3:13 Weather forecast: Clear and sunny, with temps in the 70s 2:31 Another warm day in Boston with plenty of sunshine 2:18 Weather forecast: Sunny and mild 3:19 Partly cloudy, high temps reach near 70