May weather forecastMillwood, WA
May
Weather in May
The last month of the spring, May, is a refreshing month in Millwood, Washington, with an average temperature fluctuating between 65.1°F (18.4°C) and 41.2°F (5.1°C).Temperature
The shift into May is marked by a rise in the average high-temperature, moving from April's cool 54.1°F (12.3°C) to an enjoyable 65.1°F (18.4°C). Millwood reports a sharp reduction in temperature during May, averaging at a cold 41.2°F (5.1°C) at night.Humidity
In Millwood, the average relative humidity in May is 65%.Rainfall
In May, the rain falls for 12.7 days. Throughout May, 1.61" (41mm) of precipitation is accumulated. Throughout the year, there are 125.4 rainfall days, and 17.28" (439mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Millwood aggregates 0.04" (1mm) of snow. In Millwood, during the entire year, snow falls for 56.4 days and aggregates up to 37.4" (950mm) of snow.Daylight
In May, the average length of the day in Millwood is 15h and 10min.On the first day of May, sunrise is at 5:30 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 4:55 am and sunset at 8:38 pm PDT.
Sunshine
In Millwood, the average sunshine in May is 10.3h.UV index
In Millwood, Washington, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 4 in May, converts into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Millwood, WA
- Average high temperature in May: 65.1°F
The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (32°F).
- Average low temperature in May: 41.2°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in May
Millwood, 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
Millwood, WA
- Average wind speed in May: 5.5mph
The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in May
Millwood, WA
- Average humidity in May: 65%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (43%).
Average rainfall in May
Millwood, WA
- Average rainfall in May: 1.61"
The wettest month (with the highest rainfall) is January (2.28").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days in May
Millwood, WA
- Average rainfall days in May: 12.7 days
The month with the highest number of rainy days is March (16 days).
The month with the least rainy days is July (5.1 days).
Average snowfall in May
Millwood, WA
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (10.51").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Millwood, WA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is December (13.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Millwood, WA
- Average daylight in May: 15h and 12min
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: 10h and 18min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in May
Millwood, WA
- Average sunshine days in May: 16.4 days
The month with the most sunshine days is July (24.3 days).
The month with the least sunshine days is March (10.3 days).
Average UV index in May
Millwood, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Millwood, WA
- Average cloud cover in May: 34
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in May
Millwood, WA
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
