May weather forecastLa Grande, WA
May
Weather in May
The last month of the spring, May, is an enjoyable month in La Grande, Washington, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 62.1°F (16.7°C).Temperature
La Grande's weather in May presents a minor rise in the average high-temperature, moving from a fresh 53.2°F (11.8°C) in April to an enjoyable 62.1°F (16.7°C). During May, La Grande witnesses a consistent average low-temperature of 40.6°F (4.8°C).Humidity
The average relative humidity in May is 78%.Rainfall
In La Grande, Washington, in May, during 14.3 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, there are 182.2 rainfall days, and 37.83" (961mm) of precipitation is accumulated.Snowfall
In La Grande, snow does not fall in May through October.Daylight
The average length of the day in May in La Grande is 15h and 4min.On the first day of May, sunrise is at 5:52 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:55 pm PDT.
Sunshine
In May, the average sunshine is 8.8h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 4 in May, converts into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
La Grande, WA
- Average high temperature in May: 62.1°F
The warmest month (with the highest average high temperature) is August (75°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in May: 40.6°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).
Average pressure in May
La Grande, WA
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in May
La Grande, WA
- Average wind speed in May: 3.9mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in May
La Grande, WA
- Average humidity in May: 78%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (70%).
Average rainfall in May
La Grande, WA
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is December (5.71").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in May
La Grande, WA
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in May
La Grande, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
La Grande, WA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in May /
Average sunshine in May
La Grande, WA
- Average daylight in May: 15h and 6min
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 48min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in May
La Grande, WA
- Average sunshine days in May: 14.7 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is February (8 days).
Average UV index in May
La Grande, 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
La Grande, WA
- Average cloud cover in May: 47
The months with the most cloud cover are January, February, March and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
La Grande, WA
- Average visibility in May: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
