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
May's arrival coincides with a temperature rise, moving from April's fresh 51.1°F (10.6°C) to a moderate 60.4°F (15.8°C). During May, Startup witnesses a consistent average low-temperature of 40.1°F (4.5°C).Humidity
In May, the average relative humidity is 79%.Rainfall
In May, the rain falls for 17 days. Throughout May, 2.76" (70mm) of precipitation is accumulated. Throughout the year, in Startup, Washington, there are 200.6 rainfall days, and 51.65" (1312mm) of precipitation is accumulated.Snowfall
In Startup, Washington, snow does not fall in May through October.Daylight
In Startup, the average length of the day in May is 15h and 11min.On the first day of May, sunrise is at 5:47 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 8:57 pm PDT.
Sunshine
In May, the average sunshine in Startup is 8.4h.UV index
In Startup, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 4 suggests this advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Startup?
What is the average humidity in May in Startup?
How many days does it rain in May in Startup?
When it does not snow in Startup?
Does it snow in Startup in May?
How many hours of daylight does Startup have in May?
When is the sunrise / sunset in May in Startup?
How long on average sun shines in May in Startup?
What is the UV index intensity in May in Startup?
Average temperature in May
Startup, WA
- Average high temperature in May: 60.4°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is December (38.3°F).
- Average low temperature in May: 40.1°F
The month with the highest average low temperature is August (48°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).
Average pressure in May
Startup, WA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in May
Startup, WA
- Average wind speed in May: 3.4mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in May
Startup, WA
- Average humidity in May: 79%
The months with the highest relative humidity are January, February and March (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in May
Startup, WA
- Average rainfall in May: 2.76"
The wettest month (with the highest rainfall) is January (7.8").
The driest month (with the least rainfall) is August (0.79").
Average rainfall days in May
Startup, WA
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is March (22.3 days).
The month with the least rainy days is August (7.9 days).
Average snowfall in May
Startup, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Startup, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (5.2 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
Startup, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in May
Startup, WA
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is March (7 days).
Average UV index in May
Startup, 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, March, April, October, November and December (UV index 2).
Average cloud cover in May
Startup, WA
- Average cloud cover in May: 49
The months with the most cloud cover are March and December (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Startup, WA
- Average visibility in May: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Startup, Washington, USA
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