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
Trail's December weather, marked by an average high temperature of 44.2°F (6.8°C) and an average low temperature of 30.4°F (-0.9°C), is the coldest in the year.Humidity
The months with the highest humidity in Trail are January and December, with an average relative humidity of 83%.Rainfall
December is the month with the most rainfall. Rain falls for 15 days and accumulates 3.46" (88mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Trail, Oregon. In Trail, in December, snow falls for 5.5 days, with typically accumulated 3.31" (84mm) of snow. Throughout the year, there are 26.3 snowfall days, and 21.18" (538mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:22 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:41 am and sunset at 4:47 pm PST.
Sunshine
With an average of 5.3h of sunshine, December has the least sunshine of the year in Trail.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Trail. 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: In December, the maximum UV index of 2 transforms into these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
What part of the year is the coldest in Trail?
How cold is December in Trail?
What are the most humid months in Trail?
What is the average humidity in December in Trail?
What is the rainiest month in Trail?
How much does it rain in Trail in December?
How much does it snow in Trail in December?
What is the month with the shortest days in Trail?
How many hours of daylight does Trail have in December?
When is the sunrise / sunset in December in Trail?
What is the month with the least sunshine in Trail?
How many hours of sunshine does Trail have in December?
What is the month with the lowest UV index in Trail?
What is the UV index intensity in December in Trail?
Average temperature in December
Trail, OR
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is August (83.8°F).
The month with the lowest average high temperature is December (44.2°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (30.4°F).
Average pressure in December
Trail, OR
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in December
Trail, OR
- Average wind speed in December: 4.1mph
The windiest months (with the highest average wind speed) are January and March (4.3mph).
The calmest months (with the lowest average wind speed) are September and October (3.5mph).
Average humidity in December
Trail, OR
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (60%).
Average rainfall in December
Trail, OR
- Average rainfall in December: 3.46"
The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Trail, OR
- Average rainfall days in December: 15 days
The month with the highest number of rainy days is March (18 days).
The month with the least rainy days is August (3.1 days).
Average snowfall in December
Trail, OR
- Average snowfall in December: 3.31"
The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Trail, OR
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Trail, OR
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Trail, OR
- Average sunshine days in December: 12.4 days
The months with the most sunshine days are July and August (25.9 days).
The month with the least sunshine days is March (10.7 days).
Average UV index in December
Trail, 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
Trail, OR
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Trail, OR
- Average visibility in December: 5mi
The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).
Trail, Oregon, USA
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