Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
A rise in the average high-temperature is observed during May, moving from a comfortable 61.3°F (16.3°C) in April to a pleasant 71.2°F (21.8°C). During May, Royal City detects a significant contrast from its daytime temperatures, with nights averaging at a frosty 49.1°F (9.5°C).Humidity
The average relative humidity in May is 48%.Rainfall
In Royal City, in May, it is raining for 8.2 days, with typically 0.71" (18mm) of accumulated precipitation. In Royal City, during the entire year, the rain falls for 86.4 days and collects up to 6.38" (162mm) of precipitation.Snowfall
In Royal City, snow does not fall in May through August and October.Daylight
In Royal City, the average length of the day in May is 15h and 5min.On the first day of May in Royal City, sunrise is at 5:41 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 5:07 am and sunset at 8:45 pm PDT.
Sunshine
In Royal City, the average sunshine in May is 11h.UV index
In Royal City, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 5 in May leads to these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What are May temperatures in Royal City?
What is the average humidity in May in Royal City?
How much does it rain in Royal City in May?
When it does not snow in Royal City?
Does it snow in Royal City in May?
How many hours of daylight does Royal City have in May?
When is the sunrise / sunset in May in Royal City?
How many hours of sunshine does Royal City have in May?
What is the UV index reading in May in Royal City?
Average temperature in May
Royal City, WA
- Average high temperature in May: 71.2°F
The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (34.5°F).
- Average low temperature in May: 49.1°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (24.3°F).
Average pressure in May
Royal City, WA
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in May
Royal City, WA
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in May
Royal City, WA
- Average humidity in May: 48%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).
Average rainfall in May
Royal City, WA
- Average rainfall in May: 0.71"
The wettest months (with the highest rainfall) are January and December (0.87").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in May
Royal City, WA
- Average rainfall days in May: 8.2 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in May
Royal City, WA
- Average snowfall in May: 0"
The month with the highest snowfall is December (3.43").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in May
Royal City, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (6.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Royal City, 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 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in May
Royal City, WA
- Average sunshine days in May: 20.9 days
The months with the most sunshine days are July and August (25.8 days).
The month with the least sunshine days is February (16 days).
Average UV index in May
Royal City, 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
Royal City, WA
- Average cloud cover in May: 25
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in May
Royal City, WA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Royal City, Washington, USA
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