May weather forecast
Pomona Heights, WA

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Weather in May

The last month of the spring, May, is a refreshing month in Pomona Heights, Washington, with an average temperature varying between 67.8°F (19.9°C) and 46.2°F (7.9°C).

Temperature

Pomona Heights in May shows a temperature shift, moving from an average high of 57.4°F (14.1°C) in April to a still refreshing 67.8°F (19.9°C). The mean low-temperature during May nights in Pomona Heights is a chilly 46.2°F (7.9°C).

Humidity

In Pomona Heights, the average relative humidity in May is 53%.

Rainfall

In Pomona Heights, in May, it is raining for 7.5 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, there are 87.6 rainfall days, and 5.94" (151mm) of precipitation is accumulated.

Snowfall

May through August and October are months without snowfall.

Daylight

In May, the average length of the day is 15h and 3min.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:12 pm. On the last day of May, sunrise is at 5:12 am and sunset at 8:47 pm PDT.

Sunshine

In May, the average sunshine in Pomona Heights is 11.4h.

UV index

In Pomona Heights, Washington, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 5 in May translates into this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

What is the usual temperature for Pomona Heights in May?

The high-temperature, in May, in Pomona Heights, records 67.8°F (19.9°C), while the low-temperature is 46.2°F (7.9°C).

What is the average humidity in May in Pomona Heights?

In Pomona Heights, Washington, the average relative humidity in May is 53%.

How much does it rain in Pomona Heights in May?

In Pomona Heights, in May, it is raining for 7.5 days, with typically 0.67" (17mm) of accumulated precipitation.

When it does not snow in Pomona Heights?

May through August and October are months without snowfall in Pomona Heights.

Does it snow in Pomona Heights in May?

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

How many hours of daylight does Pomona Heights have in May?

In May, the average day length is 15h and 3min.

When is the sunrise / sunset in May in Pomona Heights?

In May, on the first day of the month, sunrise is at 5:45 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 8:47 pm PDT.

How long on average sun shines in May in Pomona Heights?

In Pomona Heights, Washington, the average sunshine duration in May is 11.4h.

What is the UV index intensity in May in Pomona Heights?

In Pomona Heights, Washington, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
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
Pomona Heights, WA

Average temperature in May - Pomona Heights, WA
  • Average high temperature in May: 67.8°F

The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (36°F).

  • Average low temperature in May: 46.2°F

The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

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Average pressure in May
Pomona Heights, WA

Average pressure in May - Pomona Heights, WA
  • Average pressure in May: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

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Average wind speed in May
Pomona Heights, WA

Average wind speed in May - Pomona Heights, WA
  • Average wind speed in May: 6.9mph

The windiest month (with the highest average wind speed) is June (7.4mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).

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Average humidity in May
Pomona Heights, WA

Average humidity in May - Pomona Heights, WA
  • Average humidity in May: 53%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (41%).

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Average rainfall in May
Pomona Heights, WA

Average rainfall in May - Pomona Heights, WA
  • Average rainfall in May: 0.67"

The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days in May
Pomona Heights, WA

Average rainfall days in May - Pomona Heights, WA
  • Average rainfall days in May: 7.5 days

The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is July (2.3 days).

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Average snowfall in May
Pomona Heights, WA

Average snowfall in May - Pomona Heights, WA
  • Average snowfall in May: 0"

The month with the highest snowfall is December (3.07").
The months with the least snowfall are May, June, July, August and October (0").

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Average snowfall days in May
Pomona Heights, WA

Average snowfall days in May - Pomona Heights, WA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is December (5.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

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Average daylight in May /
Average sunshine in May
Pomona Heights, WA

Average daylight in May / Average sunshine in May - Pomona Heights, 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: 11h and 2min

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).

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Average sunshine days in May
Pomona Heights, WA

Average sunshine days in May - Pomona Heights, WA
  • Average sunshine days in May: 20.3 days

The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is February (15.5 days).

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Average UV index in May
Pomona Heights, WA

Average UV index in May - Pomona Heights, WA
  • Average UV index in May: 5

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
Pomona Heights, WA

Average cloud cover in May - Pomona Heights, WA
  • Average cloud cover in May: 22

The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in May
Pomona Heights, WA

Average visibility in May - Pomona Heights, 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).

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Pomona Heights, Washington, USA

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