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
Stevenson's transition into May is marked by a temperature shift, moving from a cool 51.4°F (10.8°C) in April to an enjoyable 61.2°F (16.2°C). Stevenson's temperature in May declines substantially from daytime highs, settling at a consistent average of 39.4°F (4.1°C) during the nights.Humidity
In May, the average relative humidity in Stevenson is 75%.Rainfall
In Stevenson, in May, during 14.4 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, there are 181 rainfall days, and 43.15" (1096mm) of precipitation is accumulated.Snowfall
In Stevenson, snow does not fall in May through October.Daylight
The average length of the day in May is 14h and 57min.On the first day of May in Stevenson, sunrise is at 5:53 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:49 pm PDT.
Sunshine
The average sunshine in May is 8.4h.UV index
In Stevenson, 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 radiation for the average person.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
Does it snow in Stevenson in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Stevenson have in May?
What is the UV index reading in May?
Average temperature in May
Stevenson, WA
- Average high temperature in May: 61.2°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in May: 39.4°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (27.7°F).
Average pressure in May
Stevenson, WA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in May
Stevenson, WA
- Average wind speed in May: 4.9mph
The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in May
Stevenson, WA
- Average humidity in May: 75%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are July and August (66%).
Average rainfall in May
Stevenson, WA
- Average rainfall in May: 2.17"
The wettest month (with the highest rainfall) is January (7.48").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in May
Stevenson, WA
- Average rainfall days in May: 14.4 days
The month with the highest number of rainy days is March (21.7 days).
The month with the least rainy days is August (5 days).
Average snowfall in May
Stevenson, WA
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Stevenson, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.4 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
Stevenson, WA
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in May
Stevenson, WA
- Average sunshine days in May: 14.3 days
The month with the most sunshine days is August (24 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in May
Stevenson, WA
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Stevenson, WA
- Average cloud cover in May: 49
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in May
Stevenson, WA
- Average visibility in May: 5mi
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
Stevenson, Washington, USA
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