June in Chimaltenango is the rainiest and the cloudiest month of the year. In June, the weather in Chimaltenango is typically warm. Average daily high temperature in June is about 20 degrees above zero. On average, Chimaltenango has 30 rainy days in June. The rains are usually heavy. June as well as May, July, August, and September is considered the most uncomfortable time to visit Chimaltenango.