May weather forecastWest Longview, WA
May
Weather in May
May, the last month of the spring in West Longview, is a refreshing month, with temperature in the range of an average high of 64.8°F (18.2°C) and an average low of 40.8°F (4.9°C).Temperature
The shift into May is accompanied by a modest temperature increase, with the average high-temperature edging up from a moderate 55.9°F (13.3°C) in April to a still refreshing 64.8°F (18.2°C). West Longview registers a substantial downturn from daytime peaks throughout May nights, with an average low-temperature of 40.8°F (4.9°C).Humidity
In West Longview, the average relative humidity in May is 78%.Rainfall
In West Longview, in May, during 13.9 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. In West Longview, during the entire year, the rain falls for 175.5 days and collects up to 25.83" (656mm) of precipitation.Snowfall
April through October are months without snowfall in West Longview.Daylight
The average length of the day in May in West Longview, Washington, is 15h and 0min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:21 pm. On the last day of May, in West Longview, Washington, sunrise is at 5:24 am and sunset at 8:55 pm PDT.
Sunshine
In May, the average sunshine is 7.9h.UV index
In West Longview, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In May, the maximum UV index of 4 translates into these guidelines:
Heed the precautions - Suggestions to avoid sunburn are made. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
West Longview, WA
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in May: 40.8°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in May
West Longview, WA
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in May
West Longview, WA
- Average wind speed in May: 4.2mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in May
West Longview, WA
- Average humidity in May: 78%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in May
West Longview, WA
- Average rainfall in May: 1.61"
The wettest month (with the highest rainfall) is January (3.9").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in May
West Longview, WA
- Average rainfall days in May: 13.9 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.1 days).
Average snowfall in May
West Longview, WA
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
West Longview, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
West Longview, WA
- Average daylight in May: 15h and 0min
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 42min).
- Average sunshine in May: 7h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 30min).
Average sunshine days in May
West Longview, WA
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is July (22 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in May
West Longview, 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 November (UV index 1).
Average cloud cover in May
West Longview, WA
- Average cloud cover in May: 55
The months with the most cloud cover are February and March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in May
West Longview, WA
- Average visibility in May: 4mi
The month with the highest visibility is August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).
