May weather forecast
Cosmopolis, WA

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Weather in May

The last month of the spring, May, is a refreshing month in Cosmopolis, Washington, with an average temperature ranging between min 43.9°F (6.6°C) and max 61.5°F (16.4°C).

Temperature

Cosmopolis's transition into May brings a slight rise in the average high-temperature, moving from a cool 54.3°F (12.4°C) in April to a comfortable 61.5°F (16.4°C). An average low-temperature of 43.9°F (6.6°C) is anticipated throughout the nights during May.

Humidity

In Cosmopolis, the average relative humidity in May is 80%.

Rainfall

In May, the rain falls for 9.4 days. Throughout May, 0.55" (14mm) of precipitation is accumulated. Throughout the year, in Cosmopolis, Washington, there are 113.5 rainfall days, and 10.24" (260mm) of precipitation is accumulated.

Snowfall

April through December are months without snowfall in Cosmopolis.

Daylight

In May, the average length of the day is 15h and 5min.
On the first day of May, sunrise is at 5:57 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 9:01 pm PDT.

Sunshine

The average sunshine in May in Cosmopolis is 8.1h.

UV index

In May, the average daily maximum UV index in Cosmopolis is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the usual temperature for Cosmopolis in May?

The average high-temperature, in May, in Cosmopolis, is 61.5°F (16.4°C), while the average low-temperature is 43.9°F (6.6°C).

What is the average humidity in May in Cosmopolis?

In May, the average relative humidity in Cosmopolis, Washington, is 80%.

How many days does it rain in May in Cosmopolis?

In Cosmopolis, Washington, in May, it is raining for 9.4 days, with typically 0.55" (14mm) of accumulated precipitation.

When it does not snow in Cosmopolis?

In Cosmopolis, snow does not fall in April through December.

How many hours of daylight does Cosmopolis have in May?

In May, the average day length in Cosmopolis, Washington, is 15h and 5min.

When are sunrise and sunset in May in Cosmopolis?

On the first day of May, sunrise is at 5:57 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 9:01 pm PDT.

How long on average sun shines in May in Cosmopolis?

In May, the average sunshine duration is 8.1h.

What is the UV index reading in May in Cosmopolis?

In Cosmopolis, the average daily maximum UV index in May is 4. A UV Index estimate 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
Cosmopolis, WA

Average temperature in May - Cosmopolis, WA
  • Average high temperature in May: 61.5°F

The warmest month (with the highest average high temperature) is August (71.4°F).
The month with the lowest average high temperature is December (44.2°F).

  • Average low temperature in May: 43.9°F

The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is December (36.5°F).

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Average pressure in May
Cosmopolis, WA

Average pressure in May - Cosmopolis, WA
  • Average pressure in May: 30.05"Hg

The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).

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Average wind speed in May
Cosmopolis, WA

Average wind speed in May - Cosmopolis, WA
  • Average wind speed in May: 5.6mph

The windiest month (with the highest average wind speed) is January (7mph).
The calmest month (with the lowest average wind speed) is September (4.7mph).

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Average humidity in May
Cosmopolis, WA

Average humidity in May - Cosmopolis, WA
  • Average humidity in May: 80%

The months with the highest relative humidity are November and December (88%).
The month with the lowest relative humidity is July (78%).

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Average rainfall in May
Cosmopolis, WA

Average rainfall in May - Cosmopolis, WA
  • Average rainfall in May: 0.55"

The wettest month (with the highest rainfall) is January (1.93").
The driest months (with the least rainfall) are July and August (0.12").

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Average rainfall days in May
Cosmopolis, WA

Average rainfall days in May - Cosmopolis, WA
  • Average rainfall days in May: 9.4 days

The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is August (3.2 days).

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Average snowfall in May
Cosmopolis, WA

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

The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Cosmopolis, WA

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

The month with the highest number of snowfall days is February (1.3 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
Cosmopolis, WA

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

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

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in May
Cosmopolis, WA

Average sunshine days in May - Cosmopolis, WA
  • Average sunshine days in May: 20 days

The month with the most sunshine days is August (25.4 days).
The months with the least sunshine days are February and March (14.1 days).

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Average UV index in May
Cosmopolis, WA

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

The month with the highest UV index is July (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
Cosmopolis, WA

Average cloud cover in May - Cosmopolis, WA
  • Average cloud cover in May: 51

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in May
Cosmopolis, WA

Average visibility in May - Cosmopolis, WA
  • Average visibility in May: 5mi

The months with the highest visibility are February, March, April, May, June and November (5mi).
The months with the lowest visibility are January, July, August, September, October and December (4mi).

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Cosmopolis, Washington, USA

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