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
In May, the average high-temperature marginally rises from a mild 56.1°F (13.4°C) in April to a comfortable 64.8°F (18.2°C). Napavine's May nights cool down significantly from the day's heat, to an average low-temperature of 40.8°F (4.9°C).Humidity
In May, the average relative humidity is 78%.Rainfall
In May, in Napavine, the rain falls for 14.6 days. Throughout May, 2.09" (53mm) of precipitation is accumulated. In Napavine, Washington, during the entire year, the rain falls for 185.5 days and collects up to 36.1" (917mm) of precipitation.Snowfall
In Napavine, snow does not fall in April through October.Daylight
In Napavine, the average length of the day in May is 15h and 2min.On the first day of May, sunrise is at 5:55 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:56 pm PDT.
Sunshine
In Napavine, the average sunshine in May is 8h.UV index
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 during May leads to these advisories:
Make use of precautions - It is urged to ward off sun damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What is the average May temperature in Napavine?
What is the average humidity in May in Napavine?
How many days does it rain in May in Napavine?
When it does not snow in Napavine?
What is the average length of the day in May in Napavine?
When is the sunrise / sunset in May in Napavine?
How long on average sun shines in May in Napavine?
What is the UV index reading in May in Napavine?
Average temperature in May
Napavine, WA
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in May: 40.8°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure in May
Napavine, WA
- Average pressure in May: 30.04"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 (30.02"Hg).
Average wind speed in May
Napavine, WA
- Average wind speed in May: 4mph
The windiest months (with the highest average wind speed) are January, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity in May
Napavine, WA
- Average humidity in May: 78%
The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in May
Napavine, WA
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is January (5.51").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in May
Napavine, WA
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is March (21.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in May
Napavine, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Napavine, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.5 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
Napavine, WA
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in May
Napavine, WA
- Average sunshine days in May: 15 days
The months with the most sunshine days are July and August (20.8 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in May
Napavine, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Napavine, WA
- Average cloud cover in May: 55
The months with the most cloud cover are January, February and December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in May
Napavine, WA
- Average visibility in May: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
Napavine, Washington, USA
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