Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
La Grande's coldest temperatures are experienced in December, with average high temperatures of 41.2°F (5.1°C) and lows of 31.1°F (-0.5°C).Humidity
The average relative humidity in December in La Grande is 87%.Rainfall
December is the month with the most rainfall in La Grande, Washington. Rain falls for 18.6 days and accumulates 5.71" (145mm) of precipitation.Snowfall
Months with snowfall in La Grande, Washington, are January through April, November and December. In La Grande, in December, during 3.8 snowfall days, 1.54" (39mm) of snow is typically accumulated. Throughout the year, in La Grande, Washington, there are 20.4 snowfall days, and 13.62" (346mm) of snow is accumulated.Daylight
December has the shortest days of the year in La Grande, Washington, with an average of 8h and 36min of daylight.On the first day of December in La Grande, Washington, sunrise is at 7:34 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 4:31 pm PST.
Sunshine
With an average of 4.1h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in La Grande are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
What time of the year is the coldest in La Grande?
How cold is it in La Grande in December?
What is the average humidity in December in La Grande?
What is the wettest month in La Grande?
How many days does it rain in December in La Grande?
How much does it snow in La Grande in December?
What is the month with the shortest days in La Grande?
How many hours of daylight does La Grande have in December?
When is the sunrise / sunset in December in La Grande?
What is the month with the least sunshine in La Grande?
How long on average sun shines in December in La Grande?
What is the month with the lowest UV index in La Grande?
What is the UV index reading in December in La Grande?
Average temperature in December
La Grande, WA
- Average high temperature in December: 41.2°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 December: 31.1°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 December
La Grande, WA
- Average pressure in December: 30.09"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 December
La Grande, WA
- Average wind speed in December: 4.8mph
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 December
La Grande, WA
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
La Grande, WA
- Average rainfall in December: 5.71"
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 December
La Grande, WA
- Average rainfall days in December: 18.6 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 December
La Grande, WA
- Average snowfall in December: 1.54"
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 December
La Grande, WA
- Average snowfall days in December: 3.8 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 December /
Average sunshine in December
La Grande, WA
- Average daylight in December: 8h and 4min
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 December: 4h and 1min
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 December
La Grande, WA
- Average sunshine days in December: 10.6 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 December
La Grande, WA
- Average UV index in December: 2
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 December
La Grande, WA
- Average cloud cover in December: 57
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 December
La Grande, WA
- Average visibility in December: 4mi
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).
La Grande, Washington, USA
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