November in Terrance B. Lettsome International Airport is the rainiest month of the year. In November, the weather in Terrance B. Lettsome International Airport is typically hot. Average daily high temperature in November is about 28 degrees above zero. On average, Terrance B. Lettsome International Airport has 15 rainy, 11 sunny, and 4 partly cloudy days in November. The rains are usually heavy. November as well as October is considered the most uncomfortable time to visit Terrance B. Lettsome International Airport.