May weather forecastGrayland, WA
May
Weather in May
The last month of the spring, May, is a moderate month in Grayland, Washington, with an average temperature varying between 60.4°F (15.8°C) and 44.8°F (7.1°C).Temperature
With the onset of May, Grayland's weather sees a minor temperature rise, transitioning from a cool 54°F (12.2°C) in April to a moderate 60.4°F (15.8°C). The temperature dips to an average of 44.8°F (7.1°C) during May nights.Humidity
In May, the average relative humidity is 80%.Rainfall
In May, the rain falls for 14.1 days. Throughout May, 1.97" (50mm) of precipitation is accumulated. Throughout the year, there are 186.2 rainfall days, and 48.78" (1239mm) of precipitation is accumulated.Snowfall
In Grayland, snow does not fall in April through October and December.Daylight
The average length of the day in May in Grayland is 15h and 4min.On the first day of the month, sunrise is at 5:59 am and sunset at 8:27 pm. On the last day of May, in Grayland, sunrise is at 5:25 am and sunset at 9:02 pm PDT.
Sunshine
In May, the average sunshine is 8h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index in Grayland. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in May translates into the following instructions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Grayland, WA
- Average high temperature in May: 60.4°F
The warmest month (with the highest average high temperature) is August (69.4°F).
The month with the lowest average high temperature is December (45.1°F).
- Average low temperature in May: 44.8°F
The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is December (37.6°F).
Average pressure in May
Grayland, 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).
Average wind speed in May
Grayland, WA
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in May
Grayland, WA
- Average humidity in May: 80%
The months with the highest relative humidity are November and December (87%).
The month with the lowest relative humidity is July (79%).
Average rainfall in May
Grayland, WA
- Average rainfall in May: 1.97"
The wettest month (with the highest rainfall) is December (7.99").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in May
Grayland, WA
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is March (21.8 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in May
Grayland, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in May
Grayland, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in May /
Average sunshine in May
Grayland, WA
- Average daylight in May: 15h and 6min
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 0min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in May
Grayland, WA
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is August (21.4 days).
The months with the least sunshine days are February and November (8 days).
Average UV index in May
Grayland, WA
- Average UV index in May: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Grayland, WA
- Average cloud cover in May: 50
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in May
Grayland, WA
- Average visibility in May: 5mi
The months with the highest visibility are March and April (6mi).
The month with the lowest visibility is August (4mi).
