August in Langley is the warmest month of the year. In August, the weather in Langley is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, Langley has 17 sunny, 9 partly cloudy, 4 rainy, and 1 cloudy day in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Langley.