Zion National Park Weather in September
September in Zion National Park brings high temperatures, with highs of 25°C (77°F) and nights dropping to 7°C (45°F). With perfect weather conditions overall, it's a good time to visit.
Rainfall in Zion National Park in September
Looking at the last 30 years, the data shows about 7 days with rain, averaging 45 mm (1.8 in) for the month. The occasional light shower is possible, but rain is rarely an issue this month.
Temperature in Zion National Park in September
The perfect temperature in Zion National Park in September makes it a solid month to visit, with 25°C (77°F) during the day and 7°C (45°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows around 7°C (45°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Zion National Park's climate page.
Zion National Park Temperature in September
Min Temperature
7°C (45°F)
Max Temperature
25°C (77°F)
Chance of Rain
23%
Precipitation
45 mm (1.8 in)
Rainy days
7 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Zion National Park typically drop from around 31°C (88°F) at the start of September to approximately 26°C (79°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 14°C (57°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Zion National Park in September
Browse day-by-day weather records for Zion National Park spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Zion National Park historical weather extremes in September
Based on weather observations in Zion National Park between 1976 and 2025, these are the recorded extremes during September.
- Zion National Park recorded its highest September temperature of 41°C (106°F) on September 6, 2020.
- Nighttime temperatures dropped to -2°C (28°F) on September 29, 1985, marking the coldest September night on record.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Zion National Park in September
For Zion National Park in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket.What To Do in Zion National Park in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Zion National Park's climate page.
See the full Zion National Park climate overview or explore weather in the United States of America.
