May weather forecastRetsil, WA
May
Weather in May
The last month of the spring, May, is an enjoyable month in Retsil, Washington, with an average temperature varying between 65.1°F (18.4°C) and 45°F (7.2°C).Temperature
May's onset is marked by a subtle temperature increase, moving from 56.7°F (13.7°C) in April to a still refreshing 65.1°F (18.4°C). Throughout May, Retsil's nights cool down to an average of 45°F (7.2°C).Humidity
The average relative humidity in May in Retsil, Washington, is 75%.Rainfall
In Retsil, Washington, during May, the rain falls for 11.8 days and regularly aggregates up to 0.83" (21mm) of precipitation. In Retsil, during the entire year, the rain falls for 138.9 days and collects up to 12.24" (311mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Retsil, the average length of the day in May is 15h and 9min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:23 pm. On the last day of May, sunrise is at 5:16 am and sunset at 8:59 pm PDT.
Sunshine
In Retsil, the average sunshine in May is 9.2h.UV index
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In May, a daily UV index of 4 turns into the following recommendations:
Act with care - The need to guard against sun damage is communicated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Retsil, WA
- Average high temperature in May: 65.1°F
The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (43.2°F).
- Average low temperature in May: 45°F
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).
Average pressure in May
Retsil, WA
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in May
Retsil, WA
- Average wind speed in May: 4.2mph
The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity in May
Retsil, WA
- Average humidity in May: 75%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (69%).
Average rainfall in May
Retsil, WA
- Average rainfall in May: 0.83"
The wettest months (with the highest rainfall) are January and December (2.05").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in May
Retsil, WA
- Average rainfall days in May: 11.8 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (5.4 days).
Average snowfall in May
Retsil, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Retsil, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.8 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
Retsil, 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: 9h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in May
Retsil, WA
- Average sunshine days in May: 16.4 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in May
Retsil, 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
Retsil, WA
- Average cloud cover in May: 42
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in May
Retsil, WA
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).
