Monthly weather forecast and climate
Phoenix, AZ

The city of Phoenix, Arizona, at dusk
The city of Phoenix, Arizona, at dusk
January, like December, in Phoenix, Arizona, is another comfortable winter month, with average temperature ranging between max 64.2°F (17.9°C) and min 47.5°F (8.6°C). In Phoenix, the average high-temperature in January is almost the same as in December - a still comfortable 64.2°F (17.9°C). Weather in January »

February, the last month of the winter, in Phoenix, is also an enjoyable month, with average temperature varying between 67.6°F (19.8°C) and 50.2°F (10.1°C). In Phoenix, the average high-temperature is relatively the same as in January - a still enjoyable 67.6°F (19.8°C). Weather in February »

March, the first month of the spring, in Phoenix, is a moderately hot month, with temperature in the range of an average high of 76.1°F (24.5°C) and an average low of 55.9°F (13.3°C). In Phoenix, the average high-temperature in March slightly increases, from an enjoyable 67.6°F (19.8°C) in February, to a moderately hot 76.1°F (24.5°C). Weather in March »

April, the same as March, is another warm spring month in Phoenix, Arizona, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 83.1°F (28.4°C). In April, the average high-temperature slightly increases, from a warm 76.1°F (24.5°C) in March, to a still moderately hot 83.1°F (28.4°C). Weather in April »

May, the last month of the spring, in Phoenix, is a hot month, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 90.9°F (32.7°C). In Phoenix, the average high-temperature marginally rises, from a moderately hot 83.1°F (28.4°C) in April, to a tropical 90.9°F (32.7°C). Weather in May »

June, the first month of the summer, in Phoenix, is a sweltering month, with average temperature varying between 102°F (38.9°C) and 76.6°F (24.8°C). In Phoenix, the average high-temperature rises, from a hot 90.9°F (32.7°C) in May, to a sweltering 102°F (38.9°C). Weather in June »

July, the same as June, is a very hot summer month in Phoenix, Arizona, with average temperature fluctuating between 84°F (28.9°C) and 103.6°F (39.8°C). July is the warmest month, with an average high-temperature of 103.6°F (39.8°C) and an average low-temperature of 84°F (28.9°C). In Phoenix, the average relative humidity in July is 29%. Weather in July »

The last month of the summer, August, is also a sweltering month in Phoenix, Arizona, with temperature in the range of an average low of 84.7°F (29.3°C) and an average high of 102.6°F (39.2°C). In Phoenix, the average high-temperature is essentially the same as in July - a still torrid 102.6°F (39.2°C). Weather in August »

The first month of the autumn, September, is also a sweltering month in Phoenix, Arizona, with average temperature varying between 96.3°F (35.7°C) and 78.8°F (26°C). In September, the average high-temperature marginally drops, from 102.6°F (39.2°C) in August, to a still sweltering 96.3°F (35.7°C). Weather in September »

October, the same as September, is a moderately hot autumn month in Phoenix, Arizona, with average temperature fluctuating between 85.1°F (29.5°C) and 67.3°F (19.6°C). In October, the average high-temperature decreases, from a sweltering 96.3°F (35.7°C) in September, to a moderately hot 85.1°F (29.5°C). Weather in October »

The last month of the autumn, November, is another warm month in Phoenix, Arizona, with average temperature ranging between max 73.6°F (23.1°C) and min 56.3°F (13.5°C). In Phoenix, the average high-temperature decreases, from a moderately hot 85.1°F (29.5°C) in October, to a still warm 73.6°F (23.1°C). Weather in November »

December, the first month of the winter, in Phoenix, is also an enjoyable month, with average temperature varying between 47.8°F (8.8°C) and 63°F (17.2°C). The coldest month is December, with an average high-temperature of 63°F (17.2°C) and an average low-temperature of 47.8°F (8.8°C). Weather in December »

How much does it rain in Phoenix?

In Phoenix, Arizona, during the entire year, the rain falls for 44.6 days and collects up to 5.04" (128mm) of precipitation.

How much does it snow in Phoenix?

In Phoenix, Arizona, during the entire year, snow aggregates up to 0.04" (1mm).

When it does not snow in Phoenix?

January through August, October through December are months without snowfall.

What is the driest month in Phoenix?

May and June are months with the least rain in Phoenix, Arizona, when the rain falls for 1.3 days and typically aggregates up to 0.08" (2mm) of rain.

What is the month with the highest UV index in Phoenix?

Months with the highest UV index in Phoenix are May through August, with an average maximum UV index of 8.

What is the least humid month in Phoenix?

The least humid month in Phoenix, Arizona, is June, with an average relative humidity of 16%.

When are the longest days in Phoenix?

The month with the longest days in Phoenix is June, with an average of 14.3h of daylight.

What month has the most sunshine in Phoenix?

June has the most sunshine of the year, with an average of 12.1h of sunshine.

What is the warmest month in Phoenix?

July is the warmest month in Phoenix, with an average high-temperature of 103.6°F (39.8°C) and an average low-temperature of 84°F (28.9°C).

What is the rainiest month in Phoenix?

July is the month with the most rainfall in Phoenix, Arizona. Rain falls for 7.8 days and accumulates 0.75" (19mm) of precipitation.

When does it snow in Phoenix?

September is the only month when snow falls.

What is the snowiest month in Phoenix?

The month with the most snowfall in Phoenix, Arizona, is September when snow falls for 0.1 days and typically aggregates up to 0.04" (1mm) of snow.

What is the coldest month in Phoenix?

The coldest month is December, with an average high-temperature of 63°F (17.2°C) and an average low-temperature of 47.8°F (8.8°C).

What is the most humid month in Phoenix?

December is the most humid month, with an average relative humidity of 43%.

What is the month with the shortest days in Phoenix?

December has the shortest days of the year, with an average of 10h of daylight.

What is the month with the least sunshine in Phoenix?

The month with the least sunshine in Phoenix is December, with an average of 6.8h of sunshine.

When is the lowest UV index in Phoenix?

December is the month with the lowest UV index, with an average maximum UV index of 3.
Average temperature - Phoenix, AZ
Average pressure - Phoenix, AZ

The month with the highest atmospheric pressure is January (1018.9mbar).
The month with the lowest atmospheric pressure is June (1009.5mbar).

Average wind speed - Phoenix, AZ

The windiest month (with the highest average wind speed) is April (10.3km/h).
The calmest month (with the lowest average wind speed) is December (7km/h).

Average rainfall - Phoenix, AZ
Average rainfall days - Phoenix, AZ
Average snowfall - Phoenix, AZ

The month with the highest snowfall is September (1mm).
Months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0mm).

Average snowfall days - Phoenix, AZ

The month with the highest number of snowfall days is September (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

Average daylight / Average sunshine - Phoenix, AZ

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

The month with the most sunshine is June (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.8h).

Average sunshine days - Phoenix, AZ

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 visibility - Phoenix, AZ

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).