May Weather in Spokane, United States

Last updated: June 24, 2025

The average temperature in Spokane, United States during May is a comfortable 14°C (58°F). Temperatures can range from a chilly 0°C (32°F) to a warm 31°C (88°F). Expect about 50 mm (2.0 in) of precipitation over 8 days, with an average humidity level of 77%. Embrace the variety that this month brings!

May Temperature in Spokane

In May in Spokane, the average temperature is 14°C (58°F), with maximums reaching up to 31°C (88°F) and minimums dropping as low as 0°C (32°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack layers for comfort throughout the day.

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

The chart illustrates May temperature patterns in Spokane, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Spokane, May typically has an average temperature of 14°C (58°F), with highs reaching up to 31°C (88°F) and lows dropping to around 0°C (32°F).

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

May Precipitation in Spokane

In Spokane in May, the total precipitation amount is 50 mm (2.0 in) spread over 8 days.

May Precipitation Trends in Spokane

The chart displays monthly precipitation patterns in Spokane, 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 Spokane, May typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Spokane

In Spokane in May, humidity is 77%. With an average temperature of 14°C (58°F), this humidity feels like a warm blanket wrapping around you, making traveling feel sticky and heavy, yet still manageable as you explore the sights.

May Average Humidity in Spokane

This chart illustrates the average monthly humidity levels in Spokane, 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 Spokane 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 Spokane

In Spokane in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Spokane.

Maximum UV Index Levels in Spokane for May

The chart shows the monthly maximum UV Index (UVI) for Spokane 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 Spokane typically reaches 8, which falls under the very high exposure category.

Data source: Spokane 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 Spokane Compares to Other Months

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

This table compares monthly weather conditions in Spokane, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	76 mm (3.0 inches)	85%	low
February Weather	-1°C (30°F)	65 mm (2.6 inches)	86%	moderate
March Weather	4°C (40°F)	60 mm (2.4 inches)	86%	moderate
April Weather	8°C (47°F)	52 mm (2.1 inches)	82%	high
May Weather	14°C (58°F)	50 mm (2.0 inches)	77%	very high
June Weather	19°C (66°F)	21 mm (0.8 inches)	79%	very high
July Weather	23°C (75°F)	4 mm (0.1 inches)	77%	very high
August Weather	23°C (73°F)	11 mm (0.5 inches)	62%	very high
September Weather	17°C (62°F)	30 mm (1.2 inches)	60%	high
October Weather	8°C (47°F)	55 mm (2.2 inches)	80%	moderate
November Weather	3°C (38°F)	79 mm (3.1 inches)	87%	moderate
December Weather	0°C (32°F)	74 mm (2.9 inches)	86%	low