December weather forecastSanta Clara, OR
December
Weather in December
The first month of the winter, December, is still a chilly month in Santa Clara, Oregon, with an average temperature fluctuating between 34.2°F (1.2°C) and 46°F (7.8°C).Temperature
December proves to be the coldest month, recording an average maximum temperature of 46°F (7.8°C) and a minimum temperature of 34.2°F (1.2°C).Humidity
February and December, with an average relative humidity of 87%, are the most humid months.Rainfall
The month with the most rainfall in Santa Clara is December, when the rain falls for 19.1 days and typically aggregates up to 4.45" (113mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Santa Clara, in December, during 0.4 snowfall days, 0.31" (8mm) of snow is typically accumulated. In Santa Clara, during the entire year, snow falls for 4.8 days and aggregates up to 3.58" (91mm) of snow.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:28 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:47 am and sunset at 4:44 pm PST.
Sunshine
The average sunshine in December is 4.3h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Santa Clara, OR
- Average high temperature in December: 46°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in December: 34.2°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in December
Santa Clara, OR
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in December
Santa Clara, OR
- Average wind speed in December: 4.5mph
The windiest months (with the highest average wind speed) are January, February, March and December (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.7mph).
Average humidity in December
Santa Clara, OR
- Average humidity in December: 87%
The months with the highest relative humidity are February and December (87%).
The month with the lowest relative humidity is August (68%).
Average rainfall in December
Santa Clara, OR
- Average rainfall in December: 4.45"
The wettest month (with the highest rainfall) is December (4.45").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Santa Clara, OR
- Average rainfall days in December: 19.1 days
The month with the highest number of rainy days is March (19.8 days).
The months with the least rainy days are July and August (3.8 days).
Average snowfall in December
Santa Clara, OR
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (2.13").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Santa Clara, OR
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (2.3 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
Santa Clara, 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 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Santa Clara, OR
- Average sunshine days in December: 10.9 days
The months with the most sunshine days are July and August (25.3 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in December
Santa Clara, OR
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Santa Clara, OR
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Santa Clara, OR
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
