December weather forecastBlue River, OR
December
Weather in December
The first month of the winter, December, is still a chilly month in Blue River, Oregon, with an average temperature ranging between max 44.4°F (6.9°C) and min 32.9°F (0.5°C).Temperature
December is Blue River's coldest month, registering average high temperatures of 44.4°F (6.9°C) and lows of 32.9°F (0.5°C).Humidity
February, March and December, with an average relative humidity of 86%, are the most humid months in Blue River.Rainfall
The month with the most rainfall is December, when the rain falls for 18.9 days and typically aggregates up to 5.47" (139mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Blue River, during December, snow falls for 1 days and regularly aggregates up to 0.47" (12mm) of snow. Throughout the year, there are 7.9 snowfall days, and 7.76" (197mm) 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 7:25 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:44 am and sunset at 4:40 pm PST.
Sunshine
The average sunshine in December is 4.3h.UV index
The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Blue River, OR
- Average high temperature in December: 44.4°F
The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in December
Blue River, OR
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Blue River, OR
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Blue River, OR
- Average humidity in December: 86%
The months with the highest relative humidity are February, March and December (86%).
The month with the lowest relative humidity is August (66%).
Average rainfall in December
Blue River, OR
- Average rainfall in December: 5.47"
The wettest month (with the highest rainfall) is December (5.47").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in December
Blue River, OR
- Average rainfall days in December: 18.9 days
The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is July (4.1 days).
Average snowfall in December
Blue River, OR
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Blue River, OR
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Blue River, OR
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Blue River, OR
- Average sunshine days in December: 11 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in December
Blue River, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Blue River, OR
- Average cloud cover in December: 56
The months with the most cloud cover are February and March (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in December
Blue River, OR
- Average visibility in December: 5mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are February and April (4mi).
