January weather forecast
Grand Canyon National Park, AZ

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The famed Horseshoe bend at the iconic Grand Canyon National Park, Arizona
The famed Horseshoe bend at the iconic Grand Canyon National Park, Arizona

Weather in January

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.

Frequently asked questions

What is the coldest time of year in Grand Canyon National Park?

The coldest period falls in January and December, when the average high-temperature reaches 55°F (12.8°C).

What is the usual temperature for Grand Canyon National Park in January?

In January, in Grand Canyon National Park, the average high-temperature is 55°F (12.8°C), and the average low-temperature is 35.1°F (1.7°C).

How many days does it rain in January in Grand Canyon National Park?

In January, the rain falls for 4 days. Throughout January, 1.06" (27mm) of precipitation is accumulated.

When does it snow the most in Grand Canyon National Park?

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

What is the last month it snows in Grand Canyon National Park?

January is the last month it regularly snows in Grand Canyon National Park, Arizona. Throughout January, Grand Canyon National Park aggregates 0.16" (4mm) of snow.

How many hours of daylight does Grand Canyon National Park have in January?

In Grand Canyon National Park, the average day length in January is 10h and 2min.

What time are sunrise and sunset in January in Grand Canyon National Park?

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.

What are the months with the least sunshine in Grand Canyon National Park?

The months with the least sunshine in Grand Canyon National Park are January and December, with an average of 7h of sunshine.

How long on average sun shines in January in Grand Canyon National Park?

In January, the average sunshine duration in Grand Canyon National Park is 7h.

What is the UV index reading in January in Grand Canyon National Park?

In January, the average daily maximum UV index in Grand Canyon National Park is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average rainfall days
Average snowfall
Average daylight
Average sunshine
Average UV index

Average temperature in January
Grand Canyon National Park, AZ

Average temperature in January - Grand Canyon National Park, AZ
  • Average high temperature in January: 55°F

The warmest month (with the highest average high temperature) is July (104°F).
The months with the lowest average high temperature are January and December (55°F).

  • Average low temperature in January: 35°F

The month with the highest average low temperature is July (74°F).
The coldest month (with the lowest average low temperature) is January (35°F).

Average rainfall in January
Grand Canyon National Park, AZ

Average rainfall in January - Grand Canyon National Park, AZ
  • Average rainfall in January: 1.1"

The wettest month (with the highest rainfall) is August (1.5").
The driest month (with the least rainfall) is June (0.2").

Average rainfall days in January
Grand Canyon National Park, AZ

Average rainfall days in January - Grand Canyon National Park, AZ
  • Average rainfall days in January: 4 days

The month with the highest number of rainy days is August (5 days).
The months with the least rainy days are May and June (1 days).

Average snowfall in January
Grand Canyon National Park, AZ

Average snowfall in January - Grand Canyon National Park, AZ
  • Average snowfall in January: 0.1"

The months with the highest snowfall are January and December (0.1").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

Average daylight in January /
Average sunshine in January
Grand Canyon National Park, AZ

Average daylight in January / Average sunshine in January - Grand Canyon National Park, AZ
  • Average daylight in January: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in January: 7h

The month with the most sunshine is June (Average sunshine: 13h).
The months with the least sunshine are January and December (Average sunshine: 7h).

Average UV index in January
Grand Canyon National Park, AZ

Average UV index in January - Grand Canyon National Park, AZ
  • Average UV index in January: 3

The months with the highest UV index are June and July (UV index 11).
The month with the lowest UV index is December (UV index 2).

Grand Canyon National Park, Arizona, USA

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