July in Churchill Falls is the rainiest and the warmest month of the year. In July, the weather in Churchill Falls is typically warm. Average daily high temperature in July is about 18 degrees above zero. On average, Churchill Falls has 18 rainy, 7 partly cloudy, 4 cloudy, and 2 sunny days in July. The rains are usually heavy. July as well as January, February, March, and May is considered the most uncomfortable time to visit Churchill Falls.