forecast August 18, 2021 4:26 am Forecast: Humid, Scattered Showers Wednesday Today: Mostly cloudy, turning humid, occasional shower. Highs 80-85. Overnight Wednesday Night: A few showers. Lows around 70. Thursday: A period of rain and thunder, humid. Highs in the upper 70s. US & World Videos 3:13 Weather forecast: Clear and sunny, with temps in the 70s 2:31 Another warm day in Boston with plenty of sunshine 2:44 Tuesday is the last dry and hot day this week 2:18 Weather forecast: Sunny and mild 3:19 Partly cloudy, high temps reach near 70