April weather forecast and climate
Phoenix, AZ

The city of Phoenix, Arizona at dusk
The city of Phoenix, Arizona at dusk
April in Phoenix gets even hotter with temperatures rising to read between 51.8°F (11°C) and 84.2°F (29°C) accompanied by sunshine that will shine steadily for up to twelve hours across the day; that is like all daytime! Humidity declines sharply to 16%, a clear indication of temperatures going up. Rainfall is quite minimal in April as it falls only for an average of two days during the entire month prompting the rain gauge at just 0.3" (7.6mm).
Average temperature in April - Phoenix, AZ
  • Average high temperature in April: 29.6°C

The warmest month (with the highest average high temperature) is July (41.2°C).
The month with the lowest average high temperature is December (18.9°C).

  • Average low temperature in April: 15.7°C

The month with the highest average low temperature is July (28.6°C).
The coldest month (with the lowest average low temperature) is December (7.1°C).

Average humidity in April - Phoenix, AZ
  • Average humidity in April: 27.8%

The month with the highest relative humidity is December (51.8%).
The month with the lowest relative humidity is June (19.4%).

Average rainfall in April - Phoenix, AZ
  • Average rainfall in April: 7.1mm

The wettest month (with the highest rainfall) is July (26.7mm).
The driest month (with the lowest rainfall) is June (0.5mm).

Average rainfall days in April - Phoenix, AZ
  • Average rainfall days in April: 1.7 days

The month with the highest number of rainy days is August (5 days).
The month with the lowest number of rainy days is June (0.5 days).

Average daylight in April / Average sunshine in April - Phoenix, AZ
  • Average daylight in April: 13h

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

  • Average sunshine in April: 11.8h

The month with most sunshine is June (Average sunshine: 13.6h).
The month with least sunshine is December (Average sunshine: 7.9h).

Average UV index in April - Phoenix, AZ
  • Average UV index in April: 8

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 3).

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