August in Ossining is the sunniest month of the year. In August, the weather in Ossining is typically warm. Average daily high temperature in August is about 26 degrees above zero. On average, Ossining has 17 sunny, 8 rainy, and 6 partly cloudy days in August. The rains are usually moderate. August as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Ossining.