May weather forecast
Olympic National Park, WA

May in Olympic National Park highlights the transitioning weather from spring to early summer. The park witnesses a significant dip in rainfall, now only averaging 1.8" (46mm), indicating drier days when compared to the previously more humid April. Stepping into May, the increase in temperatures and daylight hours, reaching more than 15 hours a day, underlines the strong presence of warmer seasons. The month, offering warmer days and cool nights, provides the perfect balance between the two extremes. It sets the groundwork for the arrival of the hot summer days.

Temperature

The onset of May introduces a subtle rise in the average high-temperature, nudging from a refreshing 56.8°F (13.8°C) in April to a comfortable 63.5°F (17.5°C). Throughout May, the temperature in Olympic National Park tends to fall to a consistent average low of 42.1°F (5.6°C).

Rainfall

In Olympic National Park, Washington, during May, the rain falls for 11 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Olympic National Park, during the entire year, the rain falls for 149 days and collects up to 56.3" (1430mm) of precipitation.

Snowfall

In Olympic National Park, snow does not fall in April through October.

Daylight

The average length of the day in May is 15h and 12min.
On the first day of May, sunrise is at 5:54 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 9:04 pm PDT.