May weather forecast
Tualatin, OR

Weather in May

May, the last month of the spring in Tualatin, is a comfortable month, with an average temperature ranging between min 44.4°F (6.9°C) and max 67.1°F (19.5°C).

Temperature

In Tualatin, the average high-temperature in May marginally rises from a mild 58.5°F (14.7°C) in April to an enjoyable 67.1°F (19.5°C). In Tualatin, in May, the average low-temperature is 44.4°F (6.9°C).

Humidity

The average relative humidity in May in Tualatin, Oregon, is 73%.

Rainfall

In Tualatin, during May, the rain falls for 13.4 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, in Tualatin, Oregon, there are 170.9 rainfall days, and 30.67" (779mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In Tualatin, the average length of the day in May is 14h and 55min.
On the first day of the month, sunrise is at 5:59 am and sunset at 8:17 pm. On the last day of May, sunrise is at 5:26 am and sunset at 8:51 pm PDT.

Sunshine

In May, the average sunshine in Tualatin is 8.8h.

UV index

In Tualatin, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in May in Tualatin?

In May, in Tualatin, the average high-temperature is 67.1°F (19.5°C), and the average low-temperature is 44.4°F (6.9°C).

What is the average humidity in May in Tualatin?

In Tualatin, the average relative humidity in May is 73%.

How much does it rain in Tualatin in May?

In Tualatin, in May, it is raining for 13.4 days, with typically 1.69" (43mm) of accumulated precipitation.

When it does not snow in Tualatin?

April through October are months without snowfall in Tualatin, Oregon.

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

The average day length in May in Tualatin, Oregon, is 14h and 55min.

When is the sunrise / sunset in May in Tualatin?

On the first day of May in Tualatin, Oregon, sunrise is at 5:59 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 8:51 pm PDT.

How long on average sun shines in May in Tualatin?

The average sunshine duration in May is 8.8h.

How high is the UV index in May in Tualatin?

The average daily maximum UV index in May in Tualatin, Oregon, is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Tualatin, OR

Average temperature in May - Tualatin, OR
  • Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (44.1°F).

  • Average low temperature in May: 44.4°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).

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Average pressure in May
Tualatin, OR

Average pressure in May - Tualatin, OR
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed in May
Tualatin, OR

Average wind speed in May - Tualatin, OR
  • Average wind speed in May: 4.2mph

The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average humidity in May
Tualatin, OR

Average humidity in May - Tualatin, OR
  • Average humidity in May: 73%

The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is August (63%).

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Average rainfall in May
Tualatin, OR

Average rainfall in May - Tualatin, OR
  • Average rainfall in May: 1.69"

The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in May
Tualatin, OR

Average rainfall days in May - Tualatin, OR
  • Average rainfall days in May: 13.4 days

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.8 days).

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Average snowfall in May
Tualatin, OR

Average snowfall in May - Tualatin, OR
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.57").
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
Tualatin, OR

Average snowfall days in May - Tualatin, OR
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Tualatin, OR

Average daylight in May / Average sunshine in May - Tualatin, OR
  • Average daylight in May: 14h and 55min

The month with the longest days is June (Average daylight: 15h and 37min).
The month with the shortest days is December (Average daylight: 8h and 47min).

  • Average sunshine in May: 8h and 48min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

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Average sunshine days in May
Tualatin, OR

Average sunshine days in May - Tualatin, OR
  • Average sunshine days in May: 15.7 days

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (8.6 days).

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Average UV index in May
Tualatin, OR

Average UV index in May - Tualatin, OR
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
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
Tualatin, OR

Average cloud cover in May - Tualatin, OR
  • Average cloud cover in May: 46

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in May
Tualatin, OR

Average visibility in May - Tualatin, OR
  • Average visibility in May: 5mi

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

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