Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With average high temperatures of 38.5°F (3.6°C) and lows of 22.5°F (-5.3°C), January is the coldest month.Humidity
With an average relative humidity of 70%, January is the most humid month.Rainfall
In Window Rock, in January, during 4.3 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Window Rock, during the entire year, the rain falls for 90.1 days and collects up to 11.93" (303mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Window Rock, in January, during 8.3 snowfall days, 5.35" (136mm) of snow is typically accumulated. In Window Rock, during the entire year, snow falls for 35.5 days and aggregates up to 21.02" (534mm) of snow.Daylight
The average length of the day in January is 10h and 4min.On the first day of January, sunrise is at 7:25 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:42 pm MST.
Sunshine
The months with the least sunshine are January and December, with an average of 6.4h of sunshine.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 minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 2 in January leads to these guidelines:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold does it get in January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
How many hours of daylight does Window Rock have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Window Rock, AZ
- Average high temperature in January: 38.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in January: 22.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in January
Window Rock, 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).
Average wind speed in January
Window Rock, 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 (6.7mph).
Average humidity in January
Window Rock, AZ
- Average humidity in January: 70%
The month with the highest relative humidity is January (70%).
The month with the lowest relative humidity is June (23%).
Average rainfall in January
Window Rock, AZ
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is July (2.44").
The driest month (with the least rainfall) is June (0.35").
Average rainfall days in January
Window Rock, AZ
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in January
Window Rock, AZ
- Average snowfall in January: 5.35"
The month with the highest snowfall is December (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Window Rock, AZ
- Average snowfall days in January: 8.3 days
The month with the highest number of snowfall days is December (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Window Rock, 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).
Average sunshine days in January
Window Rock, AZ
- Average sunshine days in January: 20.9 days
The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in January
Window Rock, 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).
Average cloud cover in January
Window Rock, AZ
- Average cloud cover in January: 29
The month with the most cloud cover is January (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 10).
Average visibility in January
Window Rock, 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).
Window Rock, Arizona, USA
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