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
December is Yamhill's coldest month, registering average high temperatures of 43.7°F (6.5°C) and lows of 33.6°F (0.9°C).Humidity
The months with the highest humidity are January, February, November and December, with an average relative humidity of 87%.Rainfall
December is the month with the most rainfall in Yamhill, Oregon. Rain falls for 19.5 days and accumulates 3.9" (99mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Yamhill, Oregon. In December, it is snowing for 0.6 days. Throughout December, 0.28" (7mm) of snow is accumulated. In Yamhill, during the entire year, snow falls for 5 days and aggregates up to 2.48" (63mm) of snow.Daylight
December has the shortest days of the year in Yamhill, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:32 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:52 am and sunset at 4:40 pm PST.
Sunshine
In Yamhill, the average sunshine in December is 3.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Yamhill. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: In December, the UV index of 2 transforms into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What are the coldest months in Yamhill?
How cold is it in Yamhill in December?
What is the most humid month in Yamhill?
What is the average humidity in December in Yamhill?
What is the wettest month in Yamhill?
How many days does it rain in December in Yamhill?
How much does it snow in Yamhill in December?
What is the month with the shortest days in Yamhill?
How many hours of daylight does Yamhill have in December?
When are sunrise and sunset in December in Yamhill?
How many hours of sunshine does Yamhill have in December?
When is the lowest UV index in Yamhill?
How high is the UV index in December in Yamhill?
Average temperature in December
Yamhill, OR
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is August (79.9°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in December: 33.6°F
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).
Average pressure in December
Yamhill, OR
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in December
Yamhill, OR
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is March (5.1mph).
The calmest months (with the lowest average wind speed) are August and September (4mph).
Average humidity in December
Yamhill, OR
- Average humidity in December: 87%
The months with the highest relative humidity are January, February, November and December (87%).
The month with the lowest relative humidity is August (68%).
Average rainfall in December
Yamhill, OR
- Average rainfall in December: 3.9"
The wettest month (with the highest rainfall) is December (3.9").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in December
Yamhill, OR
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is March (21.9 days).
The months with the least rainy days are July and August (6.3 days).
Average snowfall in December
Yamhill, OR
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Yamhill, OR
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (2 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
Yamhill, 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: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in December
Yamhill, OR
- Average sunshine days in December: 9.3 days
The month with the most sunshine days is July (22.3 days).
The month with the least sunshine days is March (7.4 days).
Average UV index in December
Yamhill, OR
- Average UV index in December: 2
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 2).
Average cloud cover in December
Yamhill, OR
- Average cloud cover in December: 61
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Yamhill, OR
- Average visibility in December: 4mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, November and December (4mi).
Yamhill, Oregon, USA
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