May Weather in Yelm, United States

Last updated: June 24, 2025

In May, the average temperature in Yelm, United States is a comfortable 13°C (55°F), with minimums dipping to 3°C (38°F) and maximums soaring to 28°C (83°F). Expect a total precipitation of 68 mm (2.7 in) spread across 12 days, contributing to an average humidity of 84%. Perfect for those who enjoy a mild, slightly damp climate!

May Temperature in Yelm

In May in Yelm, the average temperature is 13°C (55°F), with maximums reaching up to 28°C (83°F) and minimums dropping as low as 3°C (38°F). This mild climate makes Yelm an ideal destination for travelers looking to enjoy a pleasant outdoor experience during this time of year.

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

The chart illustrates May temperature patterns in Yelm, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yelm, May typically has an average temperature of 13°C (55°F), with highs reaching up to 28°C (83°F) and lows dropping to around 3°C (38°F).

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

May Precipitation in Yelm

In Yelm in May, the precipitation amount is 68 mm (2.7 in) over the course of 12 days.

May Precipitation Trends in Yelm

The chart displays monthly precipitation patterns in Yelm, 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 Yelm, May typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 12 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 Yelm

In Yelm in May humidity is 84%. With average temperature 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and draining for traveling.

May Average Humidity in Yelm

This chart illustrates the average monthly humidity levels in Yelm, 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 Yelm is approximately 84%, 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 Yelm

In Yelm 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 Yelm.

Maximum UV Index Levels in Yelm for May

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

Data source: Yelm 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 Yelm Compares to Other Months

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

This table compares monthly weather conditions in Yelm, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	183 mm (7.2 inches)	86%	low
February Weather	4°C (40°F)	189 mm (7.4 inches)	84%	moderate
March Weather	7°C (44°F)	136 mm (5.4 inches)	85%	moderate
April Weather	9°C (49°F)	118 mm (4.7 inches)	83%	high
May Weather	13°C (55°F)	68 mm (2.7 inches)	84%	very high
June Weather	16°C (60°F)	58 mm (2.3 inches)	84%	very high
July Weather	18°C (65°F)	11 mm (0.4 inches)	82%	very high
August Weather	18°C (66°F)	13 mm (0.5 inches)	73%	very high
September Weather	16°C (60°F)	90 mm (3.5 inches)	74%	high
October Weather	10°C (51°F)	142 mm (5.6 inches)	83%	moderate
November Weather	7°C (45°F)	180 mm (7.1 inches)	86%	moderate
December Weather	5°C (41°F)	201 mm (7.9 inches)	87%	low