May Weather in Pima, United States

Last updated: June 24, 2025

In May, the average temperature in Pima, United States is a pleasant 22°C (73°F). However, temperatures can fluctuate, ranging from a brisk 5°C (42°F) to a sizzling 37°C (99°F). Expect a little moisture, with an average precipitation of about 4 mm (0.2 in) over the course of 1 day. The average humidity sits around 45%, making for a comfortable climate overall.

May Temperature in Pima

In May in Pima, the average temperature is 22°C (73°F). Maximums can reach 37°C (99°F), while minimums can drop as low as 5°C (42°F). Be prepared for warm days and cooler evenings, making it ideal for both outdoor adventures and relaxing nights.

May Weather in Pima: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Pima, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pima, May typically has an average temperature of 22°C (73°F), with highs reaching up to 37°C (99°F) and lows dropping to around 5°C (42°F).

Data source: Temperature data for Pima generated using information from the Copernicus Climate Change Service.

May Precipitation in Pima

In Pima in May, the precipitation amount is 4 mm (0.2 in) during 1 day.

May Precipitation Trends in Pima

The chart displays monthly precipitation patterns in Pima, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Pima, May typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Pima

In Pima in May humidity is 45%. With an average temperature of 22°C (73°F), this humidity feels like a refreshing embrace, making it comfortable for traveling and exploring the local sights without feeling overly sticky or fatigued.

May Average Humidity in Pima

This chart illustrates the average monthly humidity levels in Pima, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Pima is approximately 45%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Pima

In Pima in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Pima.

Maximum UV Index Levels in Pima for May

The chart shows the monthly maximum UV Index (UVI) for Pima in May, 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 May, the maximum UV index in Pima typically reaches 12, which falls under the extreme exposure category.

Data source: Pima May 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 May Weather in Pima Compares to Other Months

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

This table compares monthly weather conditions in Pima, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	32 mm (1.3 inches)	81%	moderate
February Weather	9°C (49°F)	37 mm (1.5 inches)	82%	high
March Weather	13°C (56°F)	26 mm (1.0 inches)	68%	very high
April Weather	18°C (65°F)	2 mm (0.1 inches)	55%	extreme
May Weather	22°C (73°F)	4 mm (0.2 inches)	45%	extreme
June Weather	28°C (83°F)	4 mm (0.2 inches)	37%	extreme
July Weather	29°C (84°F)	51 mm (2.0 inches)	43%	extreme
August Weather	28°C (83°F)	21 mm (0.8 inches)	53%	extreme
September Weather	25°C (77°F)	28 mm (1.1 inches)	66%	extreme
October Weather	19°C (66°F)	16 mm (0.6 inches)	72%	very high
November Weather	13°C (56°F)	17 mm (0.7 inches)	81%	high
December Weather	8°C (47°F)	28 mm (1.1 inches)	84%	moderate