December weather forecastGardiner, OR
December
Weather in December
December, the first month of the winter in Gardiner, is still a chilly month, with an average temperature varying between 48.7°F (9.3°C) and 41°F (5°C).Temperature
Gardiner notes the coldest temperatures in December, with a high average of 48.7°F (9.3°C) and a low of 41°F (5°C).Humidity
The average relative humidity in December is 83%.Rainfall
December is the month with the most rainfall. Rain falls for 16.2 days and accumulates 3.15" (80mm) of precipitation.Snowfall
March through October and December are months without snowfall.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:31 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:49 pm PST.
Sunshine
In December, the average sunshine is 4.4h.UV index
The months with the lowest UV index are February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Gardiner, OR
- Average high temperature in December: 48.7°F
The warmest month (with the highest average high temperature) is August (67.5°F).
The month with the lowest average high temperature is December (48.7°F).
- Average low temperature in December: 41°F
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is December (41°F).
Average pressure in December
Gardiner, OR
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in December
Gardiner, OR
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is March (9mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Gardiner, OR
- Average humidity in December: 83%
The months with the highest relative humidity are February and August (84%).
The month with the lowest relative humidity is October (81%).
Average rainfall in December
Gardiner, OR
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in December
Gardiner, OR
- Average rainfall days in December: 16.2 days
The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (2.8 days).
Average snowfall in December
Gardiner, OR
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Gardiner, OR
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are February and November (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Gardiner, OR
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in December
Gardiner, OR
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is July (25.6 days).
The month with the least sunshine days is February (12.9 days).
Average UV index in December
Gardiner, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in December
Gardiner, OR
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in December
Gardiner, OR
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
