May weather forecastLa Grande, OR
May
Weather in May
May, the last month of the spring in La Grande, is an enjoyable month, with an average temperature varying between 37.6°F (3.1°C) and 61.3°F (16.3°C).Temperature
The start of May is characterized by an increase in the average high-temperature, transitioning from a cool 51.1°F (10.6°C) in April to a comfortable 61.3°F (16.3°C). A sharp divergence from daytime highs is noted during the month of May, with the average nighttime temperature settling at a wintry 37.6°F (3.1°C).Humidity
The average relative humidity in May is 67%.Rainfall
In La Grande, Oregon, during May, the rain falls for 15.8 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, there are 141.7 rainfall days, and 18.43" (468mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, La Grande aggregates 0.31" (8mm) of snow. In La Grande, during the entire year, snow falls for 56.6 days and aggregates up to 36.85" (936mm) of snow.Daylight
In May, the average length of the day is 14h and 55min.On the first day of the month, sunrise is at 5:39 am and sunset at 7:59 pm. On the last day of May, sunrise is at 5:07 am and sunset at 8:32 pm PDT.
Sunshine
In May, the average sunshine is 11h.UV index
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In May, an average UV index of 4 transforms into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Consider this! The reflection from snow 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
Average temperature in May
La Grande, OR
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in May: 37.6°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (20.5°F).
Average pressure in May
La Grande, OR
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in May
La Grande, OR
- Average wind speed in May: 4.9mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in May
La Grande, OR
- Average humidity in May: 67%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is August (45%).
Average rainfall in May
La Grande, OR
- Average rainfall in May: 1.57"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in May
La Grande, OR
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (4.8 days).
Average snowfall in May
La Grande, OR
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (10.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
La Grande, OR
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is December (13.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
La Grande, OR
- Average daylight in May: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 11h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days in May
La Grande, OR
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is July (23.4 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in May
La Grande, OR
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).
Average cloud cover in May
La Grande, OR
- Average cloud cover in May: 29
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in May
La Grande, OR
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
