May Weather in Pendleton, United States

Last updated: June 24, 2025

In May, the average temperature in Pendleton, United States hovers around 15°C (60°F), offering a comfortable climate. However, be prepared for extremes; temperatures can dip to a chilly 0°C (33°F) or soar up to a sizzling 32°C (90°F). Rainfall is modest, with 34 mm (1.3 in) expected over roughly 6 days, while average humidity lingers at a notable 77%. Whether you're exploring or relaxing, this month brings a delightful blend of weather possibilities!

May Temperature in Pendleton

In May in Pendleton, the average temperature is 15°C (60°F). Maximums can reach 32°C (90°F) and minimums can be as low as 0°C (33°F). This makes it an ideal time for travelers to experience a range of weather, so be sure to pack accordingly!

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

The chart illustrates May temperature patterns in Pendleton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pendleton, May typically has an average temperature of 15°C (60°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (33°F).

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

May Precipitation in Pendleton

In Pendleton in May, the total precipitation amount is 34 mm (1.3 in) spread over 6 days.

May Precipitation Trends in Pendleton

The chart displays monthly precipitation patterns in Pendleton, 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 Pendleton, May typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 6 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 Pendleton

In Pendleton in May, humidity is 77%. With an average temperature of 15°C (60°F), this humidity feels like you're wading through a warm, heavy blanket, making travel feel more exhausting and sticky than usual.

May Average Humidity in Pendleton

This chart illustrates the average monthly humidity levels in Pendleton, 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 Pendleton is approximately 77%, 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 Pendleton

In Pendleton in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Pendleton.

Maximum UV Index Levels in Pendleton for May

The chart shows the monthly maximum UV Index (UVI) for Pendleton 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 Pendleton typically reaches 9, which falls under the very high exposure category.

Data source: Pendleton 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 Pendleton Compares to Other Months

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

This table compares monthly weather conditions in Pendleton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	59 mm (2.3 inches)	86%	low
February Weather	2°C (36°F)	88 mm (3.5 inches)	86%	moderate
March Weather	6°C (44°F)	61 mm (2.4 inches)	85%	high
April Weather	10°C (51°F)	49 mm (1.9 inches)	83%	high
May Weather	15°C (60°F)	34 mm (1.3 inches)	77%	very high
June Weather	20°C (68°F)	16 mm (0.6 inches)	81%	very high
July Weather	25°C (77°F)	0 mm (0.0 inches)	76%	very high
August Weather	24°C (75°F)	8 mm (0.3 inches)	60%	very high
September Weather	18°C (65°F)	19 mm (0.7 inches)	58%	high
October Weather	11°C (52°F)	45 mm (1.8 inches)	75%	moderate
November Weather	6°C (42°F)	63 mm (2.5 inches)	85%	moderate
December Weather	2°C (36°F)	63 mm (2.5 inches)	87%	low