weather in napa valley ne
Napa Valley Weather Napa Valley June Weather Napa Valley Weather Napa Valley June Weather june weather in napa You are sure to experience warm daytime weather in June and pleasantly cool nights in the Napa Valley. The average June temperature in Calistoga is 68 degrees, with an average high of 86, and an average low of 50 degrees. The average rainfall in Calistoga for June is 0.22 inches.