May weather forecast
West Linn, OR

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Weather in May

May in West Linn, Oregon marks a distinct departure from the typical spring weather, paving the way for summer. Soaring temperatures range between a mild 43.5°F (6.4°C) and a warm 66.6°F (19.2°C). With an uptick in daylight hours, signs of summer become evident. The cityscape morphs into a green landscape, blending perfectly with the blue of the skies. As the school year ends, the sunny skies draw local kids to play outdoors.

Temperature

A gentle upsurge in temperatures occurs as April gives way to May, with average highs shifting from a moderate 58.5°F (14.7°C) to an enjoyable 66.6°F (19.2°C). Despite the intense daytime heat, West Linn sustains a steady low-temperature average of 43.5°F (6.4°C) during May.

Humidity

In West Linn, the average relative humidity in May is 74%.

Rainfall

In May, in West Linn, the rain falls for 13.7 days. Throughout May, 1.81" (46mm) of precipitation is accumulated. Throughout the year, in West Linn, there are 169.9 rainfall days, and 32.76" (832mm) of precipitation is accumulated.

Snowfall

In West Linn, snow does not fall in April through October.

Daylight

In May, the average length of the day in West Linn is 14h and 55min.
On the first day of the month, sunrise is at 5:57 am and sunset at 8:17 pm. On the last day of May, in West Linn, sunrise is at 5:25 am and sunset at 8:51 pm PDT.

Sunshine

In May, the average sunshine is 9h.

UV index

In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 4 in May suggests the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

What are May temperatures in West Linn?

In May, in West Linn, the average high-temperature is 66.6°F (19.2°C), and the average low-temperature is 43.5°F (6.4°C).

What is the average humidity in May in West Linn?

The average relative humidity in May is 74%.

How many days does it rain in May in West Linn?

In West Linn, Oregon, in May, it is raining for 13.7 days, with typically 1.81" (46mm) of accumulated precipitation.

When it does not snow in West Linn?

In West Linn, snow does not fall in April through October.

What is the average length of the day in May in West Linn?

In West Linn, the average day length in May is 14h and 55min.

When is the sunrise / sunset in May in West Linn?

In May, on the first day of the month, sunrise is at 5:57 am and sunset at 8:17 pm. On the last day of the month, in West Linn, Oregon, sunrise is at 5:25 am and sunset at 8:51 pm PDT.

How many hours of sunshine does West Linn have in May?

The average sunshine duration in May in West Linn, Oregon, is 9h.

What is the UV index intensity in May in West Linn?

In West Linn, Oregon, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health risk from 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
West Linn, OR

Average temperature in May - West Linn, OR
  • Average high temperature in May: 66.6°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (44.4°F).

  • Average low temperature in May: 43.5°F

The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).

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Average pressure in May
West Linn, OR

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in May
West Linn, OR

Average wind speed in May - West Linn, OR
  • Average wind speed in May: 4.1mph

The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average humidity in May
West Linn, OR

Average humidity in May - West Linn, OR
  • Average humidity in May: 74%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (64%).

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Average rainfall in May
West Linn, OR

Average rainfall in May - West Linn, OR
  • Average rainfall in May: 1.81"

The wettest month (with the highest rainfall) is December (5.16").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in May
West Linn, OR

Average rainfall days in May - West Linn, OR
  • Average rainfall days in May: 13.7 days

The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (4 days).

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Average snowfall in May
West Linn, OR

Average snowfall in May - West Linn, OR
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.5").
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
West Linn, OR

Average snowfall days in May - West Linn, 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
West Linn, OR

Average daylight in May / Average sunshine in May - West Linn, OR
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in May
West Linn, OR

Average sunshine days in May - West Linn, OR
  • Average sunshine days in May: 15.8 days

The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is February (8.1 days).

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Average UV index in May
West Linn, OR

Average UV index in May - West Linn, 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
West Linn, OR

Average cloud cover in May - West Linn, OR
  • Average cloud cover in May: 46

The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in May
West Linn, OR

Average visibility in May - West Linn, OR
  • Average visibility in May: 5mi

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

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West Linn, Oregon, USA

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