May Weather in Pasadena Hills, United States

Last updated: June 24, 2025

In Pasadena Hills, United States, the average temperature in May hovers around 25°C (78°F), creating a delightful climate for outdoor activities. Expect temperatures to vary between a minimum of 12°C (53°F) and a maximum of 36°C (97°F). With precipitation totaling 123 mm (4.8 in) over 11 days, it's wise to prepare for occasional rain. The average humidity stands at a comfortable 68%, ensuring a pleasant atmosphere throughout the month.

May Temperature in Pasadena Hills

In May in Pasadena Hills, the average temperature is 25°C (78°F). The maximum can reach 36°C (97°F), while the minimum can drop as low as 12°C (53°F). Pack accordingly to enjoy your travels comfortably!

May Weather in Pasadena Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Pasadena Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pasadena Hills, May typically has an average temperature of 25°C (78°F), with highs reaching up to 36°C (97°F) and lows dropping to around 12°C (53°F).

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

May Precipitation in Pasadena Hills

In Pasadena Hills in May, the precipitation amount is 123 mm (4.8 in) occurring over the course of 11 days.

May Precipitation Trends in Pasadena Hills

The chart displays monthly precipitation patterns in Pasadena Hills, 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 Pasadena Hills, May typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 11 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 Pasadena Hills

In Pasadena Hills in May, humidity is 68%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel a bit more intense and sticky, but still manageable for traveling if you stay hydrated and take breaks in the shade.

May Average Humidity in Pasadena Hills

This chart illustrates the average monthly humidity levels in Pasadena Hills, 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 Pasadena Hills is approximately 68%, 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 Pasadena Hills

In Pasadena Hills 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 Pasadena Hills.

Maximum UV Index Levels in Pasadena Hills for May

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

Data source: Pasadena Hills 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 Pasadena Hills Compares to Other Months

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

This table compares monthly weather conditions in Pasadena Hills, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (60°F)	43 mm (1.7 inches)	83%	high
February Weather	19°C (66°F)	69 mm (2.7 inches)	80%	very high
March Weather	20°C (68°F)	20 mm (0.8 inches)	75%	very high
April Weather	23°C (73°F)	77 mm (3.0 inches)	70%	extreme
May Weather	25°C (78°F)	123 mm (4.8 inches)	68%	extreme
June Weather	27°C (81°F)	223 mm (8.8 inches)	75%	extreme
July Weather	27°C (81°F)	276 mm (10.8 inches)	79%	extreme
August Weather	28°C (82°F)	247 mm (9.7 inches)	81%	extreme
September Weather	27°C (81°F)	189 mm (7.4 inches)	83%	extreme
October Weather	25°C (77°F)	82 mm (3.2 inches)	81%	very high
November Weather	20°C (68°F)	49 mm (1.9 inches)	82%	high
December Weather	17°C (64°F)	70 mm (2.8 inches)	84%	moderate