May weather forecast
Marblemount, WA

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Weather in May

The last month of the spring, May, is a moderate month in Marblemount, Washington, with an average temperature fluctuating between 34.9°F (1.6°C) and 55.9°F (13.3°C).

Temperature

May's arrival brings a change in high-temperatures, moving from a chilly 44.2°F (6.8°C) in April to a mild 55.9°F (13.3°C). During May, Marblemount consistently records a temperature low averaging an icy 34.9°F (1.6°C).

Humidity

In Marblemount, the average relative humidity in May is 80%.

Rainfall

In Marblemount, in May, it is raining for 17.3 days, with typically 3.03" (77mm) of accumulated precipitation. Throughout the year, in Marblemount, there are 124 rainfall days, and 55.28" (1404mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Marblemount. In Marblemount, in May, snow falls for 8.1 days, with typically accumulated 9.53" (242mm) of snow. In Marblemount, during the entire year, snow falls for 142 days and aggregates up to 321.93" (8177mm) of snow.

Daylight

The average length of the day in May is 15h and 16min.
On the first day of May, sunrise is at 5:44 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:59 pm PDT.

Sunshine

In May, the average sunshine is 8.8h.

UV index

In Marblemount, the average daily maximum UV index in May is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 in May interprets into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Marblemount?

The high-temperature, in May, in Marblemount, is 55.9°F (13.3°C), while the low-temperature averages to 34.9°F (1.6°C).

What is the average humidity in May in Marblemount?

The average relative humidity in May in Marblemount, Washington, is 80%.

How much does it rain in Marblemount in May?

In May, in Marblemount, Washington, the rain falls for 17.3 days. Throughout May, 3.03" (77mm) of precipitation is accumulated.

How many days does it snow in May in Marblemount?

In Marblemount, during May, snow falls for 8.1 days and regularly aggregates up to 9.53" (242mm) of snow.

What is the average length of the day in May in Marblemount?

In Marblemount, the average day length in May is 15h and 16min.

What time are sunrise and sunset in May in Marblemount?

In May, on the first day of the month, sunrise is at 5:44 am and sunset at 8:21 pm. On the last day of the month, in Marblemount, Washington, sunrise is at 5:08 am and sunset at 8:59 pm PDT.

How long on average sun shines in May in Marblemount?

The average sunshine duration in May in Marblemount is 8.8h.

How high is the UV index in May in Marblemount?

In May, the average daily maximum UV index in Marblemount is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Marblemount, WA

Average temperature in May - Marblemount, WA
  • Average high temperature in May: 55.9°F

The warmest month (with the highest average high temperature) is August (71.2°F).
The month with the lowest average high temperature is December (30.7°F).

  • Average low temperature in May: 34.9°F

The month with the highest average low temperature is August (43.7°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).

Average pressure in May
Marblemount, WA

Average pressure in May - Marblemount, WA
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

Average wind speed in May
Marblemount, WA

Average wind speed in May - Marblemount, WA
  • Average wind speed in May: 3.5mph

The windiest month (with the highest average wind speed) is January (4.7mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).

Average humidity in May
Marblemount, WA

Average humidity in May - Marblemount, WA
  • Average humidity in May: 80%

The months with the highest relative humidity are January, February and March (91%).
The months with the lowest relative humidity are July and August (71%).

Average rainfall in May
Marblemount, WA

Average rainfall in May - Marblemount, WA
  • Average rainfall in May: 3.03"

The wettest month (with the highest rainfall) is January (9.25").
The driest month (with the least rainfall) is August (0.87").

Average rainfall days in May
Marblemount, WA

Average rainfall days in May - Marblemount, WA
  • Average rainfall days in May: 17.3 days

The month with the highest number of rainy days is June (17.5 days).
The month with the least rainy days is February (3.8 days).

Average snowfall in May
Marblemount, WA

Average snowfall in May - Marblemount, WA
  • Average snowfall in May: 9.53"

The month with the highest snowfall is January (71.57").
The months with the least snowfall are July and August (0").

Average snowfall days in May
Marblemount, WA

Average snowfall days in May - Marblemount, WA
  • Average snowfall days in May: 8.1 days

The month with the highest number of snowfall days is March (22.8 days).
The month with the least snowfall days is August (0 days).

Average daylight in May /
Average sunshine in May
Marblemount, WA

Average daylight in May / Average sunshine in May - Marblemount, WA
  • Average daylight in May: 15h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in May
Marblemount, WA

Average sunshine days in May - Marblemount, WA
  • Average sunshine days in May: 8.7 days

The month with the most sunshine days is August (18.1 days).
The month with the least sunshine days is April (6.5 days).

Average UV index in May
Marblemount, WA

Average UV index in May - Marblemount, WA
  • Average UV index in May: 3

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, October and November (UV index 1).

Average cloud cover in May
Marblemount, WA

Average cloud cover in May - Marblemount, WA
  • Average cloud cover in May: 48

The month with the most cloud cover is March (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in May
Marblemount, WA

Average visibility in May - Marblemount, WA
  • Average visibility in May: 4mi

The months with the highest visibility are June, July, August and September (5mi).
The months with the lowest visibility are January and March (3mi).

Marblemount, Washington, USA

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