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
With average temperatures fluctuating between a high of 37°F (2.8°C) and a low of 27.1°F (-2.7°C), December stands out as the coldest month.Humidity
In Wasco, the average relative humidity in December is 83%.Rainfall
In Wasco, in December, it is raining for 4.3 days, with typically 0.2" (5mm) of accumulated precipitation. Throughout the year, there are 50.4 rainfall days, and 2.6" (66mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Wasco, in December, during 2.1 snowfall days, 0.47" (12mm) of snow is typically accumulated. Throughout the year, in Wasco, there are 7.2 snowfall days, and 1.77" (45mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 4:20 pm. On the last day of December, sunrise is at 7:43 am and sunset at 4:29 pm PST.
Sunshine
In Wasco, Oregon, the average sunshine in December is 5.2h.UV index
The months with the lowest UV index in Wasco are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 during December translates into the following guidance:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December in Wasco?
When is the sunrise / sunset in December?
How many hours of sunshine does Wasco have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Wasco, OR
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (37°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is August (59°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).
Average pressure in December
Wasco, OR
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in December
Wasco, OR
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is June (8.8mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in December
Wasco, OR
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (45%).
Average rainfall in December
Wasco, OR
- Average rainfall in December: 0.2"
The wettest month (with the highest rainfall) is May (0.47").
The driest months (with the least rainfall) are April, July and November (0.12").
Average rainfall days in December
Wasco, OR
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is May (6.1 days).
The month with the least rainy days is July (2.9 days).
Average snowfall in December
Wasco, OR
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Wasco, OR
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Wasco, OR
- Average daylight in December: 8h and 5min
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 December: 5h and 1min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Wasco, OR
- Average sunshine days in December: 25.3 days
The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is February (21.9 days).
Average UV index in December
Wasco, OR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Wasco, OR
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in December
Wasco, OR
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Wasco, Oregon, USA
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