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
The transition from December to January sees an average high-temperature of a still enjoyable 64.2°F (17.9°C), indicating a minor variance from the prior month. In Phoenix, January nights cool down to an average of 47.5°F (8.6°C).Humidity
In Phoenix, the average relative humidity in January is 42%.Rainfall
In Phoenix, in January, during 3 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Phoenix, during the entire year, the rain falls for 44.6 days and collects up to 5.04" (128mm) of precipitation.Snowfall
In Phoenix, snow does not fall in January through August, October through December.Daylight
The average length of the day in January is 10h and 14min.On the first day of January in Phoenix, sunrise is at 7:32 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:58 pm MST.
Sunshine
In Phoenix, the average sunshine in January is 7.1h.UV index
In January, the average daily maximum UV index in Phoenix is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 in January translates into these instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the usual temperature for Phoenix in January?
What is the average humidity in January in Phoenix?
How many days does it rain in January in Phoenix?
When it does not snow in Phoenix?
What is the average length of the day in January in Phoenix?
When is the sunrise / sunset in January in Phoenix?
How many hours of sunshine does Phoenix have in January?
What is the UV index intensity in January in Phoenix?
Average temperature in January
Phoenix, AZ
- Average high temperature in January: 64.2°F
The warmest month (with the highest average high temperature) is July (103.6°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in January: 47.5°F
The month with the highest average low temperature is August (84.7°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).
Average pressure in January
Phoenix, AZ
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in January
Phoenix, AZ
- Average wind speed in January: 4.5mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is December (4.3mph).
Average humidity in January
Phoenix, AZ
- Average humidity in January: 42%
The month with the highest relative humidity is December (43%).
The month with the lowest relative humidity is June (16%).
Average rainfall in January
Phoenix, AZ
- Average rainfall in January: 0.28"
The wettest month (with the highest rainfall) is July (0.75").
The driest months (with the least rainfall) are May and June (0.08").
Average rainfall days in January
Phoenix, AZ
- Average rainfall days in January: 3 days
The month with the highest number of rainy days is July (7.8 days).
The month with the least rainy days is June (0.8 days).
Average snowfall in January
Phoenix, AZ
- Average snowfall in January: 0"
The month with the highest snowfall is September (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0").
Average snowfall days in January
Phoenix, AZ
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Phoenix, AZ
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 7h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in January
Phoenix, AZ
- Average sunshine days in January: 27.3 days
The month with the most sunshine days is May (29.2 days).
The month with the least sunshine days is July (21.1 days).
Average UV index in January
Phoenix, AZ
- Average UV index in January: 4
The months with the highest UV index are May, June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Phoenix, AZ
- Average cloud cover in January: 18
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in January
Phoenix, 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).
Phoenix, Arizona, USA
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