February in Zion National Park is the rainiest month of the year. In February, the weather in Zion National Park is typically warm. Average daily high temperature in February is about 10 degrees above zero. On average, Zion National Park has 16 sunny, 8 partly cloudy, and 5 rainy days in February. The rains are usually moderate. February as well as January and December is considered the most uncomfortable time to visit Zion National Park.