May weather forecast
Yosemite National Park, CA

With May comes a noticeable transition from spring to summer in Yosemite National Park. A stark contrast from the winter season, May sees a near absence of snowfall with only 0.2" (5mm) recorded on average. Weather conditions significantly improve, leading to an increase in the park's footfall. Most of the snow melts away, revealing the large expansive greens and the cascading waterfalls to their fullest. Between sunrise and sunset, a 14.2 hours of daylight combined with 11 hours of sunshine pave way for various outdoor recreational activities.

Temperature

The arrival of May in Yosemite National Park, California, witnesses a small shift in the average high-temperature, moving from an enjoyable 65.8°F (18.8°C) in April to an agreeable 72.9°F (22.7°C). Yosemite National Park registers a prominent dip from daytime highs, with an average of 41.5°F (5.3°C) during the nights of May.

Rainfall

In May, the rain falls for 5 days. Throughout May, 1.46" (37mm) of precipitation is accumulated. Throughout the year, in Yosemite National Park, California, there are 65 rainfall days, and 36.26" (921mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Yosemite National Park, California. May is the last month it regularly snows in Yosemite National Park, California. Throughout May, Yosemite National Park aggregates 0.2" (5mm) of snow. Throughout the year, 65.31" (1659mm) of snow is accumulated.

Daylight

The average length of the day in May in Yosemite National Park is 14h and 14min.
On the first day of the month, sunrise is at 6:01 am and sunset at 7:49 pm. On the last day of May, sunrise is at 5:37 am and sunset at 8:14 pm PDT.

Sunshine

The average sunshine in May is 11h.

UV index

In Yosemite National Park, the average daily maximum UV index in May is 9. A UV Index estimate of 8 to 10 represents a very high health risk from exposure to the Sun's UV radiation for average individuals.
Note: During May, 9 as the daily maximum UV index converts into the following advice:
Be sure to take precautions. Without protection, skin might suffer damage quickly. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.