January weather forecast
Grand Canyon National Park, AZ

In Grand Canyon National Park, January is often the coldest month with light rain. The temperature fluctuates from 35°F (1.7°C) to 55°F (12.8°C), providing a crisp, cold environment. Despite this, January presents a unique opportunity to witness the park's natural beauty unobstructed by foliage. Albeit the shortest daylight hours of the year, the park still enjoys an average of seven hours of sunshine daily. Prepare for a light dusting of snow, as this month does see minimal snowfall.

Temperature

January and December, with an average high-temperature of 55°F (12.8°C), are the coldest months in Grand Canyon National Park.

Rainfall

In Grand Canyon National Park, in January, it is raining for 4 days, with typically 1.06" (27mm) 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

Months with snowfall in Grand Canyon National Park are January and December. January is the month with the most snowfall, with 0.16" (4mm) of accumulated snow.

Daylight

The average length of the day in January in Grand Canyon National Park, Arizona, is 10h and 2min.
On the first day of January, sunrise is at 7:39 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:53 pm MST.

Sunshine

January and December, with an average of 7h of sunshine, are months with the least sunshine.

UV index

In Grand Canyon National Park, Arizona, the average daily maximum UV index in January is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 3 suggests this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.