April in Estes Park is the cloudiest month of the year. In April, the weather in Estes Park is typically cold. Average daily high temperature in April is about 4 degrees above zero. On average, Estes Park has 21 rainy, 4 sunny, 3 partly cloudy, 1 snowy, and 1 cloudy day in April. The rains are usually heavy. April as well as March, May, and July is considered the most uncomfortable time to visit Estes Park.