The most pleasant months of the year for Duchess Landing are May, October and September. In Duchess Landing, there are 4 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Duchess Landing with an average high temperature of 92.5°, which ranks it as cooler than most places in Oklahoma. January is the snowiest month in Duchess Landing with 2.7 inches of snow, and 4 months of the year have significant snowfall. The most uncomfortably humid months are July, August and June.