May weather forecastNelson, WA
May
Weather in May
The last month of the spring, May, is a moderate month in Nelson, Washington, with an average temperature fluctuating between 37.4°F (3°C) and 57.7°F (14.3°C).Temperature
With the onset of May, Nelson sees a temperature rise, with the average high-temperature moving from April's frosty 46.2°F (7.9°C) to a mild 57.7°F (14.3°C). Throughout the month of May, the nighttime temperature dips to an average of 37.4°F (3°C).Humidity
In Nelson, the average relative humidity in May is 72%.Rainfall
In Nelson, in May, it is raining for 16.1 days, with typically 1.81" (46mm) of accumulated precipitation. In Nelson, during the entire year, the rain falls for 161.2 days and collects up to 28.46" (723mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows in Nelson. During 0.3 snowfall days, in May, Nelson aggregates 0.04" (1mm) of snow. In Nelson, during the entire year, snow falls for 69.9 days and aggregates up to 60.24" (1530mm) of snow.Daylight
In Nelson, the average length of the day in May is 15h and 7min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:12 am and sunset at 8:51 pm PDT.
Sunshine
The average sunshine in May is 10.3h.UV index
In Nelson, Washington, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, a daily UV index of 4 turns into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Nelson, WA
- Average high temperature in May: 57.7°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in May: 37.4°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (18.3°F).
Average pressure in May
Nelson, WA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in May
Nelson, WA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is June (6.7mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity in May
Nelson, WA
- Average humidity in May: 72%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are July and August (60%).
Average rainfall in May
Nelson, WA
- Average rainfall in May: 1.81"
The wettest month (with the highest rainfall) is January (4.41").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in May
Nelson, WA
- Average rainfall days in May: 16.1 days
The months with the highest number of rainy days are March and April (18.3 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in May
Nelson, WA
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (16.3").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Nelson, WA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Nelson, 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 36min).
- Average sunshine in May: 10h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in May
Nelson, WA
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in May
Nelson, 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 1).
Average cloud cover in May
Nelson, WA
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in May
Nelson, WA
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (3mi).
