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
As Portal steps into January, the average high-temperature holds at a still cool 54.9°F (12.7°C), hinting at a minor fluctuation from the prior month. In the month of January, an average of 36.3°F (2.4°C) marks the low-temperature.Humidity
In January, the average relative humidity is 47%.Rainfall
In Portal, during January, the rain falls for 3.8 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Portal, during the entire year, the rain falls for 73.4 days and collects up to 7.91" (201mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Portal, during January, snow falls for 1.1 days and regularly aggregates up to 0.24" (6mm) of snow. In Portal, during the entire year, snow falls for 3.5 days and aggregates up to 1.3" (33mm) of snow.Daylight
In Portal, the average length of the day in January is 10h and 20min.On the first day of January, sunrise is at 7:16 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:49 pm MST.
Sunshine
In January, the average sunshine is 7.1h.UV index
In January, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 3 during January, leads to the following recommendations:
Take precautions - Protection against sun damage is advised. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How many hours of sunshine does Portal have in January?
What is the UV index intensity in January?
Average temperature in January
Portal, AZ
- Average high temperature in January: 54.9°F
The warmest month (with the highest average high temperature) is June (92.8°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in January: 36.3°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.3°F).
Average pressure in January
Portal, AZ
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in January
Portal, AZ
- Average wind speed in January: 7.1mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is January (7.1mph).
Average humidity in January
Portal, AZ
- Average humidity in January: 47%
The month with the highest relative humidity is December (51%).
The month with the lowest relative humidity is May (21%).
Average rainfall in January
Portal, AZ
- Average rainfall in January: 0.31"
The wettest month (with the highest rainfall) is July (1.81").
The driest month (with the least rainfall) is April (0.12").
Average rainfall days in January
Portal, AZ
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is May (2.1 days).
Average snowfall in January
Portal, AZ
- Average snowfall in January: 0.24"
The month with the highest snowfall is December (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Portal, AZ
- Average snowfall days in January: 1.1 days
The month with the highest number of snowfall days is December (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Portal, AZ
- Average daylight in January: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in January: 7h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in January
Portal, AZ
- Average sunshine days in January: 26.3 days
The month with the most sunshine days is May (28.5 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in January
Portal, AZ
- Average UV index in January: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in January
Portal, AZ
- Average cloud cover in January: 17
The months with the most cloud cover are July and December (Cloud cover 20).
The month with the least cloud cover is May (Cloud cover 8).
Average visibility in January
Portal, AZ
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Portal, Arizona, USA
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