August in International Falls is the sunniest month of the year. In August, the weather in International Falls is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, International Falls has 14 sunny, 13 partly cloudy, 3 rainy, and 1 cloudy day in August. The rains are usually light. August as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit International Falls.