August 14, 2017 11:45 pm Forecast: Tuesday Preview Showers along the south coast. Additional showers and thunder north during the afternoon. Highs in the upper 70s. US & World Videos 3:01 Weather: Sunny start to weekend 2:38 Weather forecast: Clear, cool Friday night 2:50 Weekend forecast: It's going to be rather splendid in Boston 3:23 Weather forecast: Warm and mostly dry this weekend 2:45 Chilly in Boston Friday, but there's plenty of sunshine