Weather August 20, 2017 11:30 pm Hot Weather Sticks Around Tonight: Clear. Warm. Lows in the upper 60s. Monday: Perfect weather for the eclipse. Hot. Highs in the upper 80s. Tuesday: Sunny. Hot. Muggy. Highs near 90. US & World Videos 3:45 Afternoon rains expected on Sunday 4:04 Afternoon clouds over the region on Saturday 3:24 Weather forecast: Highs in the 50s 3:43 Look out for showers this afternoon in Boston 3:41 Cool air to linger over Boston into the weekend