September weather forecast
Capitol Reef National Park, UT

As September rolls in, Capitol Reef National Park undergoes an atmospheric change. The retreat of summer is most evident in temperatures, which fall between 41°F (5°C) and 75°F (23.9°C). This marks the start of the cooler season and a decline in the UV index to 8. Autumn's advent colors the landscape in beautiful hues, awakening the romance of the season. There is sustained rainfall, accounting for 0.9" (23mm) over six days, maintaining the tradition of a subtly wet September.

Temperature

Capitol Reef National Park's progression into September involves a gentle drop in the average high-temperature, from a warm 82.4°F (28°C) in August to a still moderately hot 75.2°F (24°C). In stark contrast to the day's heat, the temperature dips to an average of 41°F (5°C) during September nights.

Rainfall

In Capitol Reef National Park, Utah, during September, the rain falls for 6 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Capitol Reef National Park, during the entire year, the rain falls for 79 days and collects up to 7.99" (203mm) of precipitation.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 6:55 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:08 pm MDT.

Sunshine

In September, the average sunshine is 10h.

UV index

The average daily maximum UV index in September is 8. A UV Index of 8 to 10 symbolizes a very high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the maximum UV index of 8 suggests this advice:
Ensure precautions are always in place. The risk to skin and eyes is high without them. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.