May weather forecastAllyn, WA
May
Weather in May
May, the last month of the spring in Allyn, is a refreshing month, with an average temperature ranging between min 43.7°F (6.5°C) and max 64.9°F (18.3°C).Temperature
The beginning of May signals a rise in the average high-temperature, moving from a refreshing 55.9°F (13.3°C) in April to an enjoyable 64.9°F (18.3°C). During the May nights, an average temperature of 43.7°F (6.5°C) is observed in Allyn.Humidity
In May, the average relative humidity is 75%.Rainfall
In Allyn, during May, the rain falls for 14.3 days and regularly aggregates up to 1.69" (43mm) of precipitation. In Allyn, during the entire year, the rain falls for 175.2 days and collects up to 30.43" (773mm) of precipitation.Snowfall
May through October are months without snowfall in Allyn.Daylight
In May, the average length of the day is 15h and 8min.On the first day of May, sunrise is at 5:53 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:59 pm PDT.
Sunshine
In Allyn, Washington, the average sunshine in May is 9h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 4 translates into these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Allyn, WA
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in May: 43.7°F
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure in May
Allyn, WA
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in May
Allyn, WA
- Average wind speed in May: 4mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity in May
Allyn, WA
- Average humidity in May: 75%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is July (69%).
Average rainfall in May
Allyn, WA
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is December (5").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in May
Allyn, WA
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is March (19.7 days).
The month with the least rainy days is August (6 days).
Average snowfall in May
Allyn, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Allyn, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.8 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
Allyn, WA
- Average daylight in May: 15h and 6min
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: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in May
Allyn, 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 (8.7 days).
Average UV index in May
Allyn, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Allyn, WA
- Average cloud cover in May: 44
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in May
Allyn, WA
- Average visibility in May: 5mi
The months with the highest visibility are June, July and August (6mi).
The months with the lowest visibility are January, February, November and December (4mi).
