May weather forecast
Tukwila, WA

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Weather in May

May, the last month of the spring in Tukwila, is a comfortable month, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 44.4°F (6.9°C).

Temperature

The start of May brings a subtle shift in the average high-temperature, edging up from April's refreshing 56.7°F (13.7°C) to an enjoyable 65.3°F (18.5°C). The temperature lowers to an average of 44.4°F (6.9°C) during May nights.

Humidity

In May, the average relative humidity is 74%.

Rainfall

In Tukwila, Washington, in May, it is raining for 12.3 days, with typically 1.06" (27mm) of accumulated precipitation. In Tukwila, Washington, during the entire year, the rain falls for 138.2 days and collects up to 14.09" (358mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Tukwila, the average length of the day in May is 15h and 8min.
On the first day of the month, sunrise is at 5:50 am and sunset at 8:21 pm. On the last day of May, sunrise is at 5:15 am and sunset at 8:57 pm PDT.

Sunshine

In May, the average sunshine in Tukwila, Washington, is 9h.

UV index

In Tukwila, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

What are May temperatures in Tukwila?

The average high-temperature and low-temperature during May are 65.3°F (18.5°C) and 44.4°F (6.9°C) respectively.

What is the average humidity in May in Tukwila?

The average relative humidity in May is 74%.

How many days does it rain in May in Tukwila?

In May, the rain falls for 12.3 days. Throughout May, 1.06" (27mm) of precipitation is accumulated.

When it does not snow in Tukwila?

In Tukwila, snow does not fall in April through October.

How many hours of daylight does Tukwila have in May?

The average day length in May in Tukwila is 15h and 8min.

What time are sunrise and sunset in May in Tukwila?

On the first day of May, sunrise is at 5:50 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:57 pm PDT.

How long on average sun shines in May in Tukwila?

The average sunshine duration in May is 9h.

How high is the UV index in May in Tukwila?

In Tukwila, Washington, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents 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
Tukwila, WA

Average temperature in May - Tukwila, WA
  • Average high temperature in May: 65.3°F

The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (43.5°F).

  • Average low temperature in May: 44.4°F

The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).

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Average pressure in May
Tukwila, WA

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

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in May
Tukwila, WA

Average wind speed in May - Tukwila, WA
  • Average wind speed in May: 4.1mph

The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.6mph).

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Average humidity in May
Tukwila, WA

Average humidity in May - Tukwila, WA
  • Average humidity in May: 74%

The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (68%).

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Average rainfall in May
Tukwila, WA

Average rainfall in May - Tukwila, WA
  • Average rainfall in May: 1.06"

The wettest month (with the highest rainfall) is December (2.2").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in May
Tukwila, WA

Average rainfall days in May - Tukwila, WA
  • Average rainfall days in May: 12.3 days

The month with the highest number of rainy days is April (14.9 days).
The month with the least rainy days is August (5.7 days).

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Average snowfall in May
Tukwila, WA

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

The month with the highest snowfall is February (2.52").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
Tukwila, WA

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

The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

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

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: 9h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

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Average sunshine days in May
Tukwila, WA

Average sunshine days in May - Tukwila, WA
  • Average sunshine days in May: 15.8 days

The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (13 days).

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Average UV index in May
Tukwila, WA

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

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

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Average cloud cover in May
Tukwila, WA

Average cloud cover in May - Tukwila, WA
  • Average cloud cover in May: 44

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in May
Tukwila, WA

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

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

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Tukwila, Washington, USA

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