October weather forecast
Grand Canyon National Park, AZ

October introduces cooler weather in Grand Canyon National Park. Fall coats the park in vibrant hues as temperatures average between 55°F (12.8°C) and 81°F (27.2°C). The rainfall levels continue to descend, and scarce instances of precipitation prevail throughout the month. Enjoying fewer daylight hours than September, Grand Canyon revels in the autumn sun. Despite the waning sunlight hours, a hiking adventure can still be comfortably enjoyed.

Temperature

The shift from September to October involves a decrease in the average high-temperature, dropping from a hot 93°F (33.9°C) to a warm 81°F (27.2°C). Grand Canyon National Park documents a marked decrease from day to night, with an average low of 55°F (12.8°C) throughout October.

Rainfall

In Grand Canyon National Park, in October, it is raining for 2 days, with typically 0.94" (24mm) of accumulated precipitation. In Grand Canyon National Park, during the entire year, the rain falls for 33 days and collects up to 9.69" (246mm) of precipitation.

Snowfall

February through November are months without snowfall in Grand Canyon National Park.

Daylight

In Grand Canyon National Park, the average length of the day in October is 11h and 15min.
On the first day of the month, sunrise is at 6:24 am and sunset at 6:11 pm. On the last day of October, in Grand Canyon National Park, sunrise is at 6:50 am and sunset at 5:33 pm MST.

Sunshine

In Grand Canyon National Park, the average sunshine in October is 9h.

UV index

In Grand Canyon National Park, the average daily maximum UV index in October is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 5 in October translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.