nomadseason

July Weather in Phoenix, United States

Last updated: June 24, 2025

In July, the average temperature in Phoenix, United States is a comfortable 21°C (70°F). However, be prepared for a range, as temperatures can dip to a cool 5°C (41°F) and soar to a warm 35°C (95°F). With only 4 mm (0.2 in) of precipitation expected over 0 days, you can look forward to generally dry conditions. Don't forget, the average humidity sits at a notable 78%, adding to the overall climate experience!

July Temperature in Phoenix

In July in Phoenix, the average temperature is 21°C (70°F). Maximums can reach 35°C (95°F), while minimums can drop to 5°C (41°F). This variability in temperature makes it essential for travelers to pack both lightweight clothing for the warm days and warmer layers for the cooler evenings.

July Weather in Phoenix: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Phoenix, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phoenix, July typically has an average temperature of 21°C (70°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec383742475462696961504237
Data source: Temperature data for Phoenix generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Phoenix

In Phoenix in July, the precipitation amount is 4 mm (0.2 in) over the course of 0 days.

July Precipitation Trends in Phoenix

The chart displays monthly precipitation patterns in Phoenix, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Phoenix, July typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec12613611996673249445194106
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

July Humidity in Phoenix

In Phoenix in July, humidity is 78%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can leave travelers feeling sticky and slightly fatigued, making it important to stay hydrated and take frequent breaks from outdoor activities.

July Average Humidity in Phoenix

This chart illustrates the average monthly humidity levels in Phoenix, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Phoenix is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%86%83%83%83%78%67%66%77%87%87%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Phoenix

In Phoenix in July, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Phoenix.

Maximum UV Index Levels in Phoenix for July

The chart shows the monthly maximum UV Index (UVI) for Phoenix in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Phoenix typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3478111110108642
Data source: Phoenix July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How July Weather in Phoenix Compares to Other Months

Weather in Phoenix varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Phoenix, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Phoenix, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)125 mm (4.9 inches)84%moderate
February Weather3°C (38°F)136 mm (5.4 inches)85%moderate
March Weather5°C (42°F)119 mm (4.7 inches)86%high
April Weather8°C (47°F)96 mm (3.8 inches)83%very high
May Weather12°C (54°F)67 mm (2.6 inches)83%extreme
June Weather17°C (62°F)32 mm (1.3 inches)83%extreme
July Weather21°C (70°F)4 mm (0.2 inches)78%very high
August Weather20°C (69°F)9 mm (0.4 inches)67%very high
September Weather16°C (61°F)44 mm (1.7 inches)66%very high
October Weather10°C (51°F)51 mm (2.0 inches)77%high
November Weather6°C (43°F)94 mm (3.7 inches)87%moderate
December Weather3°C (37°F)106 mm (4.2 inches)87%low

Compare Phoenix's Climate with Cities Worldwide