Monthly Weather in Phoenix, United States
What is the average monthly temperature in Phoenix?
The average monthly temperature in Phoenix, Arizona, United States ranges from 11.7°C (53.1°F) in January to 39.2°C (102.6°F) in July. Phoenix temperature by month is given in the table below.
| Month | Celsius | Fahrenheit |
|---|---|---|
| January | 11.7°C | 53.1°F |
| February | 13.6°C | 56.5°F |
| March | 16.3°C | 61.3°F |
| April | 23.6°C | 74.5°F |
| May | 28.4°C | 83.1°F |
| June | 32.0°C | 89.6°F |
| July | 39.2°C | 102.6°F |
| August | 36.7°C | 98.1°F |
| September | 32.5°C | 90.5°F |
| October | 27.4°C | 81.3°F |
| November | 20.4°C | 68.7°F |
| December | 15.1°C | 59.2°F |
What is the hottest month in Phoenix?
The hottest months in Phoenix are July, August and September. During July the average temperature outside is 39.2°C (102.6°F), in August it is 36.7°C (98.1°F) and during September the air temperature is around 32.5°C (90.5°F).
What is the coldest month in Phoenix?
The coldest months in Phoenix are January, February and December. In January the average air temperature drops to 11.7°C (53.1°F), in February air temperature is 13.6°C (56.5°F) and during December it is 15.1°C (59.2°F).
How much does it rain on average in Phoenix?
On average it rains for 9 month(s) in Phoenix, United States with an average of 3.5 days of rain per month. In total Phoenix has 42 rainy days in a year.
When does it rain the most in Phoenix?
In Phoenix it rains the most during the following months.
- March - on average 0.95mm (0.04 inches) of rainfall per day.
- January - on average 0.8mm (0.03 inches) of rainfall per day.
- December - on average 0.74mm (0.03 inches) of rainfall per day.
- February - on average 0.29mm (0.01 inches) of rainfall per day.
- November - on average 0.24mm (0.01 inches) of rainfall per day.
- September - on average 0.08mm (0 inches) of rainfall per day.
Does it snow in Phoenix?
No, it doesn't snow in Phoenix.
When is it windy in Phoenix?
The windiest months in Phoenix, United States are August, July and May. In August the average windspeed is 26.5 km/h (16.5 mph), during July the windspeed is 26.4 km/h (16.4 mph) and in May the windspeed is 26 km/h (16.2 mph).
What are the least windy months in Phoenix?
The least windy months in Phoenix are December, January and October. In December the average windspeed is 16 km/h (9.9 mph), during January the windspeed is 17.5 km/h (10.9 mph) and in October the windspeed is 18.3 km/h (11.4 mph).
When is it cloudy in Phoenix?
The cloudiest months in Phoenix, United States are March, January and August. On average in March 58.2% of sky is covered by clouds, in January 52.7% is covered by clouds and in August clouds cover about 51.2% of sky.
When does Phoenix have the clearest sky?
Phoenix has the clearest sky in October, June and May. In October 18.1% of sky is covered by clouds, in June clouds cover around 21.8% and during May clouds cover about 27.7% of sky.
What is the average daylight duration in Phoenix?
The average daylight duration in Phoenix is 12 hours 10 minutes 22 seconds.
Which months have the most daylight in Phoenix?
The longest days in Phoenix are during June, July and May.
- June - 14 hours 19 minutes 54 seconds of daylight.
- July - 14 hours 6 minutes 54 seconds of daylight.
- May - 13 hours 53 minutes 50 seconds of daylight.
Which months have the least daylight in Phoenix?
The shortest days in Phoenix are during December, January and November.
- December - 9 hours 58 minutes 36 seconds of daylight.
- January - 10 hours 13 minutes 35 seconds of daylight.
- November - 10 hours 26 minutes 23 seconds of daylight.
What are the humidity levels in Phoenix throughout the year?
Humidity levels in Phoenix, United States range from 13.1% in June to 53.2% in January.
What are the pressure levels in Phoenix throughout the year?
Pressure levels in Phoenix change from 1007 mb (millibars) in June to 1016.8 mb in December.
What is the visibility in Phoenix throughout the year?
Visibility in Phoenix changes from lowest 15.7 km (9.8 miles) in December to highest 16 km (9.9 miles) in September.
What are the UV levels in Phoenix throughout the year?
UV levels change in Phoenix from 4.9 in December to 10 in June.
Which months have the highest UV levels in Phoenix throughout the year?
In Phoenix, United States the highest UV index is during June, May and July. During June the average UV index is 10, in May UV level is 9.7 and in July UV index is around 9.5.
Which months have the lowest UV levels in Phoenix throughout the year?
The lowest UV levels in Phoenix are in December, January and November. In December the average UV index is around 4.9, in January UV index is 5.3 and during November UV level is 5.8.