The most pleasant months of the year for Plevna are September, May and June. In Plevna, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Plevna with an average high temperature of 87.2°, which ranks it as cooler than most places in Missouri. December is the snowiest month in Plevna with 5.2 inches of snow, and 5 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.