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 brings a temperature shift, moving from a moderate 55.9°F (13.3°C) in April to an enjoyable 65.7°F (18.7°C). Nightly temperatures drop to an average low of 44.2°F (6.8°C) in May.Humidity
In Rosalia, Washington, the average relative humidity in May is 61%.Rainfall
The wettest months in Rosalia are January and May, with an average 0.91" (23mm) of rainfall.Snowfall
Months with snowfall are January through May, September, November and December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Rosalia aggregates 0.08" (2mm) of snow. In Rosalia, during the entire year, snow falls for 32.5 days and aggregates up to 14.09" (358mm) of snow.Daylight
In May, the average length of the day is 15h and 7min.On the first day of May, sunrise is at 5:31 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 4:57 am and sunset at 8:37 pm PDT.
Sunshine
In Rosalia, the average sunshine in May is 10.6h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during May translates into the following directions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What are May temperatures in Rosalia?
What is the average humidity in May in Rosalia?
What is the rainiest month in Rosalia?
How much does it rain in Rosalia in May?
What is the last month it snows in Rosalia?
How many hours of daylight does Rosalia have in May?
What time are sunrise and sunset in May in Rosalia?
How many hours of sunshine does Rosalia have in May?
What is the UV index intensity in May in Rosalia?
Average temperature in May
Rosalia, WA
- Average high temperature in May: 65.7°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (33.1°F).
- Average low temperature in May: 44.2°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in May
Rosalia, 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 (29.9"Hg).
Average wind speed in May
Rosalia, WA
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Rosalia, WA
- Average humidity in May: 61%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (36%).
Average rainfall in May
Rosalia, WA
- Average rainfall in May: 0.91"
The wettest months (with the highest rainfall) are January and May (0.91").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in May
Rosalia, WA
- Average rainfall days in May: 8.6 days
The month with the highest number of rainy days is March (10.1 days).
The month with the least rainy days is July (3.5 days).
Average snowfall in May
Rosalia, WA
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and October (0").
Average snowfall days in May
Rosalia, WA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is December (9.3 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in May /
Average sunshine in May
Rosalia, WA
- Average daylight in May: 15h and 1min
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 36min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in May
Rosalia, WA
- Average sunshine days in May: 20.5 days
The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is February (15.9 days).
Average UV index in May
Rosalia, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Rosalia, WA
- Average cloud cover in May: 30
The months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in May
Rosalia, WA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Rosalia, Washington, USA
Weather forecast for your location
2. Allow the app to use your location
