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May Weather in Oro Valley, United States

Last updated: June 24, 2025

In May, the average temperature in Oro Valley, United States hovers around 24°C (76°F), providing a pleasant atmosphere for outdoor activities. However, temperatures can vary significantly, with a minimum of 9°C (48°F) and a maximum reaching up to 39°C (102°F). Expect some light rain, as precipitation averages 5 mm (0.2 in) over 2 days. Additionally, the climate features a comfortable average humidity level of 40%. Get ready for a month of diverse weather!

May Temperature in Oro Valley

In May in Oro Valley, the average temperature is 24°C (76°F). The maximum can reach 39°C (102°F), and the minimum can be as low as 9°C (48°F). Be prepared for a wide range of temperatures when planning your travel to Oro Valley this May.

May Weather in Oro Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Oro Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oro Valley, May typically has an average temperature of 24°C (76°F), with highs reaching up to 39°C (102°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec515360697686868581716252
Data source: Temperature data for Oro Valley generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Oro Valley

In Oro Valley in May, the precipitation amount is 5 mm (0.2 in) over a period of 2 days.

May Precipitation Trends in Oro Valley

The chart displays monthly precipitation patterns in Oro Valley, 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 Oro Valley, May typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec344222359966334122131
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Oro Valley

In Oro Valley in May humidity is 40%. With an average temperature of 24°C (76°F), this humidity feels like a comfortably warm day, making it pleasant for traveling as you can explore the sights without feeling too sluggish or uncomfortable.

May Average Humidity in Oro Valley

This chart illustrates the average monthly humidity levels in Oro Valley, 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 Oro Valley is approximately 40%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Oro Valley

In Oro Valley 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 Oro Valley.

Maximum UV Index Levels in Oro Valley for May

The chart shows the monthly maximum UV Index (UVI) for Oro Valley 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 Oro Valley typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111212121111864
Data source: Oro Valley 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 Oro Valley Compares to Other Months

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

This table compares monthly weather conditions in Oro Valley, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)34 mm (1.3 inches)76%moderate
February Weather12°C (53°F)42 mm (1.7 inches)79%high
March Weather15°C (60°F)22 mm (0.9 inches)67%very high
April Weather21°C (69°F)3 mm (0.1 inches)55%extreme
May Weather24°C (76°F)5 mm (0.2 inches)40%extreme
June Weather30°C (86°F)9 mm (0.3 inches)33%extreme
July Weather30°C (86°F)96 mm (3.8 inches)34%extreme
August Weather29°C (85°F)63 mm (2.5 inches)48%extreme
September Weather27°C (81°F)34 mm (1.3 inches)64%extreme
October Weather22°C (71°F)12 mm (0.5 inches)67%very high
November Weather17°C (62°F)21 mm (0.8 inches)77%high
December Weather11°C (52°F)31 mm (1.2 inches)82%moderate

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