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
The shift into May brings a slight increase in the average high-temperature, moving from a mild 56.5°F (13.6°C) in April to an enjoyable 64°F (17.8°C). An average low-temperature of 46.6°F (8.1°C) is observed during May nights.Humidity
In Rollingbay, the average relative humidity in May is 75%.Rainfall
In Rollingbay, Washington, in May, it is raining for 13.5 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 172.2 rainfall days, and 23.7" (602mm) of precipitation is accumulated.Snowfall
In Rollingbay, snow does not fall in April through October.Daylight
In May, the average length of the day is 15h and 10min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:23 pm. On the last day of May, sunrise is at 5:16 am and sunset at 8:59 pm PDT.
Sunshine
In May, the average sunshine is 9.3h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 4 translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Rollingbay have in May?
How high is the UV index in May?
Average temperature in May
Rollingbay, WA
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in May: 46.6°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (36.3°F).
Average pressure in May
Rollingbay, WA
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in May
Rollingbay, WA
- Average wind speed in May: 4.4mph
The windiest month (with the highest average wind speed) is March (6.1mph).
The calmest months (with the lowest average wind speed) are July and August (3.7mph).
Average humidity in May
Rollingbay, WA
- Average humidity in May: 75%
The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in May
Rollingbay, WA
- Average rainfall in May: 1.46"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in May
Rollingbay, WA
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (5.9 days).
Average snowfall in May
Rollingbay, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Rollingbay, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Rollingbay, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in May
Rollingbay, WA
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is November (9.2 days).
Average UV index in May
Rollingbay, WA
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Rollingbay, WA
- Average cloud cover in May: 41
The month with the most cloud cover is December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in May
Rollingbay, 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).
Rollingbay, Washington, USA
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