The most pleasant months of the year for Jacumba are October, May and April. In Jacumba, there are 3 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Jacumba with an average high temperature of 94.4°, which ranks it as warmer than most places in California. February is the snowiest month in Jacumba with 1.2 inches of snow, and 3 months of the year have significant snowfall. Days with noticeable humidity are rare throughout the year.