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
In Mount Vernon, the average high-temperature in May marginally rises from a fresh 53.1°F (11.7°C) in April to a mild 60.3°F (15.7°C). In Mount Vernon, in May, the average low-temperature is 46°F (7.8°C).Humidity
In May, the average relative humidity is 78%.Rainfall
In Mount Vernon, during May, the rain falls for 13.8 days and regularly aggregates up to 2.2" (56mm) of precipitation. Throughout the year, there are 185.2 rainfall days, and 34.72" (882mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May is 15h and 15min.On the first day of the month, sunrise is at 5:49 am and sunset at 8:23 pm. On the last day of May, sunrise is at 5:12 am and sunset at 9:01 pm PDT.
Sunshine
The average sunshine in May is 9h.UV index
In May, the average daily maximum UV index in Mount Vernon, Washington, is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
FAQ
What is the temperature in May in Mount Vernon?
What is the average humidity in May in Mount Vernon?
How much does it rain in Mount Vernon in May?
When it does not snow in Mount Vernon?
Does it snow in Mount Vernon in May?
How many hours of daylight does Mount Vernon have in May?
What time are sunrise and sunset in May in Mount Vernon?
How long on average sun shines in May in Mount Vernon?
What is the UV index intensity in May in Mount Vernon?
Average temperature in May
Mount Vernon, WA
- Average high temperature in May: 60.3°F
The warmest months (with the highest average high temperature) are July and August (68.4°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in May: 46°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is February (36.1°F).
Average pressure in May
Mount Vernon, WA
- Average pressure in May: 30.02"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
Mount Vernon, WA
- Average wind speed in May: 4.6mph
The windiest month (with the highest average wind speed) is November (7.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in May
Mount Vernon, WA
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is July (75%).
Average rainfall in May
Mount Vernon, WA
- Average rainfall in May: 2.2"
The wettest month (with the highest rainfall) is November (4.96").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in May
Mount Vernon, WA
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (7.2 days).
Average snowfall in May
Mount Vernon, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Mount Vernon, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.6 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
Mount Vernon, WA
- Average daylight in May: 15h and 15min
The month with the longest days is June (Average daylight: 16h and 2min).
The month with the shortest days is December (Average daylight: 8h and 23min).
- Average sunshine in May: 9h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in May
Mount Vernon, WA
- Average sunshine days in May: 15.1 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.1 days).
Average UV index in May
Mount Vernon, WA
- Average UV index in May: 4
The month with the highest UV index is 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
Mount Vernon, WA
- Average cloud cover in May: 42
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in May
Mount Vernon, 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).
Weather forecast for your location
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location
