January weather forecast
Grand Canyon National Park, AZ

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

January, the same as December, is another fresh winter month in Grand Canyon National Park, Arizona, with an average temperature varying between 35.1°F (1.7°C) and 55°F (12.8°C).

Temperature

The coldest months are January and December, with an average high-temperature of 55°F (12.8°C).

Rainfall

In Grand Canyon National Park, during January, the rain falls for 4 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 33 rainfall days, and 9.69" (246mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in January is 10h and 2min.
On the first day of the month, sunrise is at 7:39 am and sunset at 5:25 pm. On the last day of January, in Grand Canyon National Park, sunrise is at 7:29 am and sunset at 5:54 pm MST.

Sunshine

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

UV index

In Grand Canyon National Park, the average daily maximum UV index in January is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 3 in January interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What are the coldest months in Grand Canyon National Park?

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

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

In January, 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 Grand Canyon National Park, during January, the rain falls for 4 days and regularly aggregates up to 1.06" (27mm) of precipitation.

What is the snowiest month 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.

When are sunrise and sunset in January in Grand Canyon National Park?

On the first day of January in Grand Canyon National Park, Arizona, sunrise is at 7:39 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:54 pm MST.

What is the month with the least sunshine in Grand Canyon National Park?

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

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

In January, the average sunshine duration is 7h.

How high is the UV index in January in Grand Canyon National Park?

The average daily maximum UV index in January in Grand Canyon National Park, Arizona, is 3. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average rainfall days
Average snowfall
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).

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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").

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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).

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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").

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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 2min

The month with the longest days is June (Average daylight: 14h and 35min).
The month with the shortest days is December (Average daylight: 9h and 45min).

  • 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).

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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).

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