January weather forecast
Fort Defiance, AZ

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Weather in January

January, like December, in Fort Defiance, Arizona, is a wintry winter month, with an average temperature varying between 37.8°F (3.2°C) and 21.6°F (-5.8°C).

Temperature

Fort Defiance's coldest month, January, registers temperatures that range from a high of 37.8°F (3.2°C) to a low of 21.6°F (-5.8°C).

Humidity

With an average relative humidity of 71%, January is the most humid month.

Rainfall

In Fort Defiance, during January, the rain falls for 3.7 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, in Fort Defiance, there are 91.1 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Fort Defiance, Arizona. In Fort Defiance, in January, snow falls for 8.7 days, with typically accumulated 5.51" (140mm) of snow. In Fort Defiance, Arizona, during the entire year, snow falls for 37.7 days and aggregates up to 22.44" (570mm) of snow.

Daylight

In January, the average length of the day in Fort Defiance is 10h and 4min.
On the first day of January, sunrise is at 7:26 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:42 pm MST.

Sunshine

January and December, with an average of 6.4h of sunshine, are months with the least sunshine in Fort Defiance.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 2 in January translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What time of the year is the coldest in Fort Defiance?

January, known for its average high temperature of 37.8°F (3.2°C) and an average low temperature of 21.6°F (-5.8°C), is the coldest month in Fort Defiance, Arizona.

How cold is it in Fort Defiance in January?

January temperatures in Fort Defiance vary between a high-temperature of 37.8°F (3.2°C) and a low-temperature of 21.6°F (-5.8°C).

What is the most humid month in Fort Defiance?

The most humid month in Fort Defiance, Arizona, is January, with an average relative humidity of 71%.

What is the average humidity in January in Fort Defiance?

In Fort Defiance, the average relative humidity in January is 71%.

How much does it rain in Fort Defiance in January?

In Fort Defiance, Arizona, in January, it is raining for 3.7 days, with typically 0.91" (23mm) of accumulated precipitation.

How much does it snow in Fort Defiance in January?

In Fort Defiance, Arizona, in January, snow falls for 8.7 days, with typically accumulated 5.51" (140mm) of snow.

What is the average length of the day in January in Fort Defiance?

The average day length in January in Fort Defiance, Arizona, is 10h and 4min.

What time are sunrise and sunset in January in Fort Defiance?

In January, on the first day of the month, sunrise is at 7:26 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:42 pm MST.

What is the month with the least sunshine in Fort Defiance?

The months with the least sunshine in Fort Defiance are January and December, with an average of 6.4h of sunshine.

How many hours of sunshine does Fort Defiance have in January?

In January, the average sunshine duration in Fort Defiance, Arizona, is 6.4h.

What are the months with the lowest UV index in Fort Defiance?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the UV index reading in January in Fort Defiance?

In Fort Defiance, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Fort Defiance, AZ

Average temperature in January - Fort Defiance, AZ
  • Average high temperature in January: 37.8°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in January
Fort Defiance, AZ

Average pressure in January - Fort Defiance, AZ
  • Average pressure in January: 30.19"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in January
Fort Defiance, AZ

Average wind speed in January - Fort Defiance, AZ
  • Average wind speed in January: 6.8mph

The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in January
Fort Defiance, AZ

Average humidity in January - Fort Defiance, AZ
  • Average humidity in January: 71%

The month with the highest relative humidity is January (71%).
The month with the lowest relative humidity is June (24%).

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Average rainfall in January
Fort Defiance, AZ

Average rainfall in January - Fort Defiance, AZ
  • Average rainfall in January: 0.91"

The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is June (0.39").

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Average rainfall days in January
Fort Defiance, AZ

Average rainfall days in January - Fort Defiance, AZ
  • Average rainfall days in January: 3.7 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (3.1 days).

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Average snowfall in January
Fort Defiance, AZ

Average snowfall in January - Fort Defiance, AZ
  • Average snowfall in January: 5.51"

The month with the highest snowfall is December (6.42").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Fort Defiance, AZ

Average snowfall days in January - Fort Defiance, AZ
  • Average snowfall days in January: 8.7 days

The month with the highest number of snowfall days is December (9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Fort Defiance, AZ

Average daylight in January / Average sunshine in January - Fort Defiance, AZ
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in January: 6h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).

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Average sunshine days in January
Fort Defiance, AZ

Average sunshine days in January - Fort Defiance, AZ
  • Average sunshine days in January: 20.7 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is July (8.7 days).

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Average UV index in January
Fort Defiance, AZ

Average UV index in January - Fort Defiance, AZ
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Fort Defiance, AZ

Average cloud cover in January - Fort Defiance, AZ
  • Average cloud cover in January: 29

The months with the most cloud cover are January and December (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 10).

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Average visibility in January
Fort Defiance, AZ

Average visibility in January - Fort Defiance, AZ
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Fort Defiance, Arizona, USA

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