May weather forecast
Lynnwood, WA

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Weather in May

May marks the advent of warm weather in Lynnwood, with increasing daylight hours and less frequent showers. Pleasant weather dominates the month, indicating the proximity of summer. An annual low in rainfall, 1.57" (40mm), comes to pass in May, contributing to the delightful weather. These marked changes make May stand out with a mesmerizing blend of warmth, brightness, and minimal precipitation.

Temperature

The commencement of May sees a minor shift in the average high-temperature, moving from a cool 55.2°F (12.9°C) in April to a refreshing 62.8°F (17.1°C). In May, the nighttime temperature lowers to an average of 45.5°F (7.5°C).

Humidity

In Lynnwood, the average relative humidity in May is 76%.

Rainfall

In Lynnwood, in May, during 13.3 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, in Lynnwood, there are 173 rainfall days, and 25" (635mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In Lynnwood, Washington, the average length of the day in May is 15h and 11min.
On the first day of May, sunrise is at 5:49 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 8:59 pm PDT.

Sunshine

In May, the average sunshine is 9.5h.

UV index

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index, 4 during May, leads to the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

May temperatures vary between a high-temperature of 62.8°F (17.1°C) and a low-temperature of 45.5°F (7.5°C).

What is the average humidity in May in Lynnwood?

In May, the average relative humidity in Lynnwood is 76%.

How much does it rain in May?

In Lynnwood, during May, the rain falls for 13.3 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow?

In Lynnwood, snow does not fall in May through October.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Lynnwood have in May?

The average day length in May is 15h and 11min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 5:49 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 8:59 pm PDT.

How long on average sun shines in May?

In May, the average sunshine duration is 9.5h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Lynnwood, WA

Average temperature in May - Lynnwood, WA
  • Average high temperature in May: 62.8°F

The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is December (43.3°F).

  • Average low temperature in May: 45.5°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (35.8°F).

Average pressure in May
Lynnwood, WA

Average pressure in May - Lynnwood, WA
  • Average pressure in May: 30.02"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

Average wind speed in May
Lynnwood, WA

Average wind speed in May - Lynnwood, WA
  • Average wind speed in May: 4.2mph

The windiest month (with the highest average wind speed) is November (5.9mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

Average humidity in May
Lynnwood, WA

Average humidity in May - Lynnwood, WA
  • Average humidity in May: 76%

The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is July (72%).

Average rainfall in May
Lynnwood, WA

Average rainfall in May - Lynnwood, WA
  • Average rainfall in May: 1.57"

The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is July (0.39").

Average rainfall days in May
Lynnwood, WA

Average rainfall days in May - Lynnwood, WA
  • Average rainfall days in May: 13.3 days

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.8 days).

Average snowfall in May
Lynnwood, WA

Average snowfall in May - Lynnwood, WA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Lynnwood, WA

Average snowfall days in May - Lynnwood, WA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in May / Average sunshine in May - Lynnwood, WA
  • Average daylight in May: 15h and 1min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in May: 9h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in May
Lynnwood, WA

Average sunshine days in May - Lynnwood, WA
  • Average sunshine days in May: 14.6 days

The month with the most sunshine days is August (22.5 days).
The month with the least sunshine days is November (9.2 days).

Average UV index in May
Lynnwood, WA

Average UV index in May - Lynnwood, WA
  • Average UV index in May: 4

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in May
Lynnwood, WA

Average cloud cover in May - Lynnwood, WA
  • Average cloud cover in May: 40

The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in May
Lynnwood, WA

Average visibility in May - Lynnwood, WA
  • Average visibility in May: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Lynnwood, Washington, USA

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