May Weather in Holtville, United States

Last updated: June 24, 2025

In Holtville, United States, the average temperature in May is a warm 27°C (82°F), with minimums dipping to a cool 12°C (53°F) and soaring to a sweltering 44°C (111°F). Despite these fluctuations, the area experiences a meager 1 mm (0.1 in) of precipitation over 0 days, and boasts an average humidity of 46%, making it a great time to enjoy outdoor activities!

May Temperature in Holtville

In May in Holtville, the average temperature is 27°C (82°F). Maximum can reach 44°C (111°F) and minimum can be as low as 12°C (53°F). It's advisable to pack for both warm days and cooler evenings when traveling to Holtville during this time.

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

The chart illustrates May temperature patterns in Holtville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Holtville, May typically has an average temperature of 27°C (82°F), with highs reaching up to 44°C (111°F) and lows dropping to around 12°C (53°F).

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

May Precipitation in Holtville

In Holtville in May, the precipitation amount is 1 mm (0.1 in) during 0 days, indicating a very dry period.

May Precipitation Trends in Holtville

The chart displays monthly precipitation patterns in Holtville, 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 Holtville, May typically receives around 1 mm (0.1 inches) of precipitation spread over approximately 0 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 Holtville

In Holtville in May, humidity is 46%. With an average temperature of 27°C (82°F), this humidity feels like a warm embrace, making traveling quite comfortable, though you might want to stay hydrated and take occasional breaks in the shade.

May Average Humidity in Holtville

This chart illustrates the average monthly humidity levels in Holtville, 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 Holtville is approximately 46%, 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 Holtville

In Holtville 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 Holtville.

Maximum UV Index Levels in Holtville for May

The chart shows the monthly maximum UV Index (UVI) for Holtville 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 Holtville typically reaches 11, which falls under the extreme exposure category.

Data source: Holtville 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 Holtville Compares to Other Months

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

This table compares monthly weather conditions in Holtville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (59°F)	10 mm (0.4 inches)	72%	moderate
February Weather	16°C (62°F)	15 mm (0.6 inches)	77%	high
March Weather	20°C (68°F)	10 mm (0.4 inches)	67%	very high
April Weather	24°C (76°F)	4 mm (0.2 inches)	56%	very high
May Weather	27°C (82°F)	1 mm (0.1 inches)	46%	extreme
June Weather	33°C (91°F)	0 mm (0.0 inches)	48%	extreme
July Weather	36°C (98°F)	8 mm (0.3 inches)	46%	extreme
August Weather	36°C (98°F)	6 mm (0.3 inches)	42%	extreme
September Weather	32°C (90°F)	9 mm (0.4 inches)	52%	very high
October Weather	25°C (78°F)	3 mm (0.1 inches)	58%	high
November Weather	19°C (67°F)	4 mm (0.2 inches)	66%	moderate
December Weather	14°C (58°F)	10 mm (0.4 inches)	74%	moderate