December weather forecastTerrebonne, OR
December
Weather in December
December, the first month of the winter in Terrebonne, is still a cold month, with an average temperature varying between 37°F (2.8°C) and 25.7°F (-3.5°C).Temperature
December stands out as Terrebonne's coldest month, with temperatures ranging between an average high of 37°F (2.8°C) and a low of 25.7°F (-3.5°C).Humidity
The most humid month is December, with an average relative humidity of 81%.Rainfall
The month with the most rainfall is December, when the rain falls for 13.4 days and typically aggregates up to 1.73" (44mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In December, in Terrebonne, it is snowing for 12.1 days. Throughout December, 5.63" (143mm) of snow is accumulated. Throughout the year, there are 51.4 snowfall days, and 24.53" (623mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:21 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:40 am and sunset at 4:35 pm PST.
Sunshine
January and December, with an average of 5.6h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 in December translates into these instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Terrebonne, OR
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (37°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in December
Terrebonne, 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 (29.97"Hg).
Average wind speed in December
Terrebonne, OR
- Average wind speed in December: 6.3mph
The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).
Average humidity in December
Terrebonne, OR
- Average humidity in December: 81%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (47%).
Average rainfall in December
Terrebonne, OR
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is December (1.73").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in December
Terrebonne, OR
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in December
Terrebonne, OR
- Average snowfall in December: 5.63"
The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Terrebonne, OR
- Average snowfall days in December: 12.1 days
The month with the highest number of snowfall days is December (12.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Terrebonne, OR
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 5h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in December
Terrebonne, OR
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (10.2 days).
Average UV index in December
Terrebonne, 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, March, November and December (UV index 2).
Average cloud cover in December
Terrebonne, OR
- Average cloud cover in December: 44
The month with the most cloud cover is December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in December
Terrebonne, 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).
