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Zion National Park Weather and Climate: A Comprehensive Guide

The climate in Zion National Park is marked by big temperature swings throughout the year. Temperatures range from very warm during the warmest months to cold in the cooler months. It's weather is marked by below-average rain/snowfall. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

In Zion National Park, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 30°C in July. In December, the coolest month of the year, temperatures drop to a chilly 7°C.

At night, you can expect cooler temperatures, with averages dropping to around -7°C during this month. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Zion National Park tends toward drier weather patterns, receiving approximately 466 mm of rain/snow per year. Zion National Park can be quite wet during December, receiving approximately 70 mm of precipitation over 11 snowy/rainy days.

In contrast June, experiences much drier conditions, with 5.6 mm of rainfall, spread across 2 rainy days. For more details, please visit our Zion National Park Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Zion National Park

Mon   Dec 23
15°C | -4°C
W 2 m/s
almost clear and no rain

almost clear and no rain

Tue   Dec 24
14°C | -2°C
SE 3 m/s
12 mm
broken clouds and small chance of rain

broken clouds and small chance of rain

Wed   Dec 25
7°C | -6°C
NW 4 m/s
1.9 mm
partly cloudy and  chance of slight sleet

partly cloudy and chance of slight sleet

The best time of year to visit Zion National Park in the United States of America

During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Zion National Park?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Zion National Park?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Zion National Park?
    The coldest month is December with an average maximum temperature of 7°C.
  • Which is the wettest month in Zion National Park?
    December tops the wettest month list with 70 mm of rainfall.
  • Which is the driest month in Zion National Park?
    June is the driest month with 6 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.