May weather forecast and climate
Olympic National Park, WA

The incredibly scenic Green Moss stream flowing downstream in the Olympic National Park in Washington, USA
The incredibly scenic Green Moss stream flowing downstream in the Olympic National Park in Washington, USA

What is the average temperature in May in Olympic National Park?

The average high-temperature, in May, in Olympic National Park, Washington, is 63.5°F (17.5°C), while the average low-temperature is 42.1°F (5.6°C).
Average temperature in May - Olympic National Park, WA
  • Average high temperature in May: 63.5°F

The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is January (40.7°F).

  • Average low temperature in May: 42°F

The month with the highest average low temperature is August (50.9°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).

Average rainfall in May - Olympic National Park, WA
  • Average rainfall in May: 1.8"

The wettest month (with the highest rainfall) is December (9.9").
The driest month (with the lowest rainfall) is July (0.8").

Average rainfall days in May - Olympic National Park, WA
  • Average rainfall days in May: 11 days

The month with the highest number of rainy days is November (18 days).
The month with the lowest number of rainy days is July (5 days).

Average snowfall in May - Olympic National Park, WA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (7.1").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average daylight in May - Olympic National Park, WA
  • Average daylight in May: 15.2h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8.5h).

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