Weather in May
Temperature
As Mount Rainier National Park transitions into May, a marginal rise in the average high-temperature is observed, moving from a wintry 42.1°F (5.6°C) in April to a frosty 49.3°F (9.6°C). Throughout May, Mount Rainier National Park's nights cool down to an average of 31.8°F (-0.1°C).Rainfall
In May, the rain falls for 15.4 days. Throughout May, 5.91" (150mm) of precipitation is accumulated. In Mount Rainier National Park, during the entire year, the rain falls for 188.7 days and collects up to 118.31" (3005mm) of precipitation.Snowfall
Months with snowfall are January through December. In Mount Rainier National Park, in May, during 7.9 snowfall days, 26.1" (663mm) of snow is typically accumulated. Throughout the year, there are 121.5 snowfall days, and 670.91" (17041mm) of snow is accumulated.Daylight
In May, the average length of the day is 15h and 5min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:17 pm. On the last day of May, sunrise is at 5:16 am and sunset at 8:53 pm PDT.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
How many days does it rain in May?
How much does it snow in May?
What is the average length of the day in May?
When is the sunrise / sunset in May?
Average temperature in May
Mount Rainier National Park, WA
- Average high temperature in May: 49.3°F
The warmest month (with the highest average high temperature) is August (64.5°F).
The month with the lowest average high temperature is December (33.8°F).
- Average low temperature in May: 31.8°F
The month with the highest average low temperature is August (43.9°F).
The coldest month (with the lowest average low temperature) is December (21.1°F).
Average rainfall in May
Mount Rainier National Park, WA
- Average rainfall in May: 5.9"
The wettest month (with the highest rainfall) is November (20.3").
The driest months (with the least rainfall) are July and August (2").
Average rainfall days in May
Mount Rainier National Park, WA
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is November (21.7 days).
The month with the least rainy days is August (6.6 days).
Average snowfall in May
Mount Rainier National Park, WA
- Average snowfall in May: 26.1"
The months with the highest snowfall are January, November and December (99.9").
The month with the least snowfall is August (0.1").
Average snowfall days in May
Mount Rainier National Park, WA
- Average snowfall days in May: 7.9 days
The month with the highest number of snowfall days is March (19.5 days).
The month with the least snowfall days is August (0.1 days).
Average daylight in May
Mount Rainier National Park, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
Mount Rainier National Park, Washington, USA
Weather forecast for your location
2. Allow the app to use your location