May weather forecast
Pasco, WA

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The pink sunrise sky over the iconic Pasco Bridge across the glassy calm waters near Pasco, Washington
The pink sunrise sky over the iconic Pasco Bridge across the glassy calm waters near Pasco, Washington

Weather in May

The weather in May shifts towards the warmer side, with the landscape flourishing under the increased sunshine. The city is ebullient with the magic of late spring, the parks and gardens being a spectacle of colors. The arrival of consistent warm weather becomes clearer, with individuals swapping sweaters for lighter fabrics. Residents and tourists relish the increase in sunshine as opportunities to partake in outdoor activities increase. An average rainfall of 0.67" (17mm) keeps Pasco fresh and vibrant while enhancing the aesthetic appeal of the city.

Temperature

With the transition into May, Pasco experiences an increase in average high-temperatures, moving up from a refreshing 63.1°F (17.3°C) in April to an agreeable 73°F (22.8°C). A steep decline to a fresh 50.4°F (10.2°C) characterizes the May nights.

Humidity

The average relative humidity in May in Pasco is 50%.

Rainfall

In Pasco, during May, the rain falls for 8.3 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Pasco, during the entire year, the rain falls for 101.7 days and collects up to 7.36" (187mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Pasco, the average length of the day in May is 15h and 1min.
On the first day of May, sunrise is at 5:41 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:40 pm PDT.

Sunshine

In May, the average sunshine is 11h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 5 in May translates into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

What is the temperature in May?

The high-temperature, in May, in Pasco, is 73°F (22.8°C), while the low-temperature averages to 50.4°F (10.2°C).

What is the average humidity in May?

In May, the average relative humidity is 50%.

How much does it rain in May?

In Pasco, in May, it is raining for 8.3 days, with typically 0.67" (17mm) of accumulated precipitation.

When it does not snow?

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

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

In Pasco, the average day length in May is 15h and 1min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 5:41 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:40 pm PDT.

How many hours of sunshine does Pasco have in May?

In May, the average sunshine duration is 11h.

What is the UV index reading in May?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes 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
Pasco, WA

Average temperature in May - Pasco, WA
  • Average high temperature in May: 73°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (37.8°F).

  • Average low temperature in May: 50.4°F

The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (27.7°F).

Average pressure in May
Pasco, WA

Average pressure in May - Pasco, WA
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in May
Pasco, WA

Average wind speed in May - Pasco, WA
  • Average wind speed in May: 7.3mph

The windiest month (with the highest average wind speed) is April (8.4mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).

Average humidity in May
Pasco, WA

Average humidity in May - Pasco, WA
  • Average humidity in May: 50%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (35%).

Average rainfall in May
Pasco, WA

Average rainfall in May - Pasco, WA
  • Average rainfall in May: 0.67"

The wettest month (with the highest rainfall) is January (0.94").
The driest month (with the least rainfall) is July (0.2").

Average rainfall days in May
Pasco, WA

Average rainfall days in May - Pasco, WA
  • Average rainfall days in May: 8.3 days

The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (3.5 days).

Average snowfall in May
Pasco, WA

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

The month with the highest snowfall is February (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Pasco, WA

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

The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in May / Average sunshine in May - Pasco, WA
  • Average daylight in May: 15h and 0min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in May: 11h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

Average sunshine days in May
Pasco, WA

Average sunshine days in May - Pasco, WA
  • Average sunshine days in May: 20.7 days

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14.7 days).

Average UV index in May
Pasco, WA

Average UV index in May - Pasco, WA
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in May
Pasco, WA

Average cloud cover in May - Pasco, WA
  • Average cloud cover in May: 26

The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).

Average visibility in May
Pasco, WA

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

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

Pasco, Washington, USA

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