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May Weather in Cactus, United States

Last updated: June 24, 2025

In May, the average temperature in Cactus, United States is a comfortable 19°C (66°F). However, be prepared for a range of temperatures, with minimums dipping as low as 0°C (33°F) and highs soaring up to 37°C (99°F). Expect 71 mm (2.8 in) of precipitation spread over about 9 days, contributing to a relatively high average humidity of 78%.

May Temperature in Cactus

In May, in Cactus, the average temperature is 19°C (66°F). Maximums can reach 37°C (99°F) and minimums can be as low as 0°C (33°F). When traveling to Cactus during this time, it's advisable to prepare for a wide range of temperatures.

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

The chart illustrates May temperature patterns in Cactus, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cactus, May typically has an average temperature of 19°C (66°F), with highs reaching up to 37°C (99°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec373849566676807772574740
Data source: Temperature data for Cactus 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 Cactus

In Cactus in May, the precipitation amount is 71 mm (2.8 in) spread over 9 days.

May Precipitation Trends in Cactus

The chart displays monthly precipitation patterns in Cactus, 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 Cactus, May typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec161144417145406127591215
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Cactus

In Cactus in May, humidity is 78%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making traveling quite uncomfortable unless you're well-prepared with lightweight, breathable clothing and frequent breaks to stay hydrated.

May Average Humidity in Cactus

This chart illustrates the average monthly humidity levels in Cactus, 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 Cactus is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%64%70%78%81%82%78%72%73%81%81%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Cactus

In Cactus in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Cactus.

Maximum UV Index Levels in Cactus for May

The chart shows the monthly maximum UV Index (UVI) for Cactus 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 Cactus typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110754
Data source: Cactus 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 Cactus Compares to Other Months

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

This table compares monthly weather conditions in Cactus, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)16 mm (0.6 inches)75%moderate
February Weather3°C (38°F)11 mm (0.4 inches)76%high
March Weather10°C (50°F)44 mm (1.7 inches)64%very high
April Weather13°C (56°F)41 mm (1.6 inches)70%very high
May Weather19°C (66°F)71 mm (2.8 inches)78%extreme
June Weather25°C (76°F)45 mm (1.8 inches)81%extreme
July Weather26°C (80°F)40 mm (1.6 inches)82%extreme
August Weather25°C (78°F)61 mm (2.4 inches)78%extreme
September Weather22°C (72°F)27 mm (1.1 inches)72%very high
October Weather14°C (57°F)59 mm (2.3 inches)73%high
November Weather8°C (47°F)12 mm (0.5 inches)80%moderate
December Weather4°C (40°F)15 mm (0.6 inches)81%moderate

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