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
As Ione transitions into May, the average high-temperature shows a change, moving from a chilly 47.7°F (8.7°C) in April to a mild 60.4°F (15.8°C). Ione, during the nights of May, registers a substantial plunge from the daytime high, averaging at a cold 34.9°F (1.6°C).Humidity
In Ione, the average relative humidity in May is 70%.Rainfall
May is the month with the most rainfall. Rain falls for 17 days and accumulates 2.52" (64mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.7 snowfall days, in May, Ione aggregates 0.24" (6mm) of snow. Throughout the year, there are 95.8 snowfall days, and 50.39" (1280mm) of snow is accumulated.Daylight
In Ione, the average length of the day in May is 15h and 17min.On the first day of May, sunrise is at 5:27 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 4:51 am and sunset at 8:43 pm PDT.
Sunshine
The average sunshine in May is 10.1h.UV index
In May, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 3 in May leads to these guidelines:
Take necessary precautions - Defending against sun damage is advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Ione have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Ione have in May?
How high is the UV index in May?
Average temperature in May
Ione, WA
- Average high temperature in May: 60.4°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.6°F).
- Average low temperature in May: 34.9°F
The month with the highest average low temperature is August (46.6°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in May
Ione, WA
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Ione, WA
- Average wind speed in May: 3.9mph
The windiest months (with the highest average wind speed) are April, May and June (3.9mph).
The calmest months (with the lowest average wind speed) are January and December (3.2mph).
Average humidity in May
Ione, WA
- Average humidity in May: 70%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (55%).
Average rainfall in May
Ione, WA
- Average rainfall in May: 2.52"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is August (0.59").
Average rainfall days in May
Ione, WA
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is April (18.5 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in May
Ione, WA
- Average snowfall in May: 0.24"
The month with the highest snowfall is January (11.77").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Ione, WA
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is December (20.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Ione, WA
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in May
Ione, WA
- Average sunshine days in May: 10.9 days
The month with the most sunshine days is August (20.2 days).
The month with the least sunshine days is March (7.6 days).
Average UV index in May
Ione, WA
- Average UV index in May: 3
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 1).
Average cloud cover in May
Ione, WA
- Average cloud cover in May: 37
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in May
Ione, 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 (2mi).
Ione, Washington, USA
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