The most pleasant months of the year for Happy are May, September and June. In Happy, there are 2 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Happy with an average high temperature of 92.3°, which ranks it as warmer than most places in Kansas. February is the snowiest month in Happy with 5.0 inches of snow, and 7 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.