May weather forecastSkykomish, WA

A calm Skykomish river with clear waters, visible stones, with a view of the iconic Lewis Street Bridge, near Monroe in Washington

May

Weather in May

May, the last month of the spring in Skykomish, is a cool month, with an average temperature fluctuating between 36.1°F (2.3°C) and 54.3°F (12.4°C).

Temperature

With the onset of May, Skykomish's average high-temperature sees a rise, moving from April's chilly 44.2°F (6.8°C) to a fresh 54.3°F (12.4°C). In the month of May, the average low-temperature usually rests at a cold 36.1°F (2.3°C).

Humidity

The average relative humidity in May is 82%.

Rainfall

In Skykomish, in May, it is raining for 19.9 days, with typically 3.54" (90mm) of accumulated precipitation. In Skykomish, during the entire year, the rain falls for 207.7 days and collects up to 61.81" (1570mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Skykomish aggregates 0.04" (1mm) of snow. Throughout the year, there are 46.1 snowfall days, and 58.62" (1489mm) of snow is accumulated.

Daylight

In May, the average length of the day is 15h and 10min.
On the first day of May, sunrise is at 5:46 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:11 am and sunset at 8:55 pm PDT.

Sunshine

In Skykomish, the average sunshine in May is 7.5h.

UV index

In Skykomish, the average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the UV index of 3 transforms into the following advice:
Exercise prevention - Warding off sunburn is urged. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Skykomish, 54.3°F (12.4°C) is the average high-temperature and 36.1°F (2.3°C) is the average low-temperature during May.

The average relative humidity in May is 82%.

In Skykomish, during May, the rain falls for 19.9 days and regularly aggregates up to 3.54" (90mm) of precipitation.

May is the last month it regularly snows. During 0.2 snowfall days, in May, Skykomish aggregates 0.04" (1mm) of snow.

In May, the average day length is 15h and 10min.

In May, on the first day of the month, sunrise is at 5:46 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:11 am and sunset at 8:55 pm PDT.

In Skykomish, the average sunshine duration in May is 7.5h.

In May, the average daily maximum UV index in Skykomish is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

44.2°F

54.3°F

59.5°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.2mph

4mph

4.2mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

5.8

8.2

9.9

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Skykomish, WA

Average high temperature in May: 54.3°F

The warmest month (with the highest average high temperature) is August (69.4°F).
The month with the lowest average high temperature is December (32.9°F).

Average low temperature in May: 36.1°F

The month with the highest average low temperature is August (44.2°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).

Average pressure in May
Skykomish, WA

Average pressure in May: 30"Hg

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

Average wind speed in May
Skykomish, WA

Average wind speed in May: 3.7mph

The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest months (with the lowest average wind speed) are August and September (3.4mph).

Average humidity in May
Skykomish, WA

Average humidity in May: 82%

The month with the highest relative humidity is February (93%).
The months with the lowest relative humidity are July and August (73%).

Average rainfall in May
Skykomish, WA

Average rainfall in May: 3.54"

The wettest month (with the highest rainfall) is January (9.96").
The driest month (with the least rainfall) is July (0.94").

Average rainfall days in May
Skykomish, WA

Average rainfall days in May: 19.9 days

The month with the highest number of rainy days is April (22.6 days).
The month with the least rainy days is August (9.9 days).

Average snowfall in May
Skykomish, WA

Average snowfall in May: 0.04"

The month with the highest snowfall is February (16.26").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Skykomish, WA

Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is December (11 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in May: 15h and 12min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

Average sunshine in May: 7h and 30min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 0min).