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
December brings the lowest temperatures, with an average high of 27.5°F (-2.5°C) and an average low of 13.5°F (-10.3°C).Humidity
In December, the average relative humidity in Mazama is 91%.Rainfall
The month with the most rainfall is December, when the rain falls for 10.1 days and typically aggregates up to 2.48" (63mm) of precipitation.Snowfall
Months with snowfall in Mazama are January through April, September through December. The month with the most snowfall is December, when snow falls for 15.3 days and typically aggregates up to 12.87" (327mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Mazama.On the first day of December, sunrise is at 7:33 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:16 pm PST.
Sunshine
In Mazama, the average sunshine in December is 4.5h.UV index
In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Mazama?
How cold is it in Mazama in December?
What is the average humidity in December in Mazama?
What is the wettest month in Mazama?
How much does it rain in Mazama in December?
When does it snow the most in Mazama?
How much does it snow in Mazama in December?
What is the month with the shortest days in Mazama?
What is the average length of the day in December in Mazama?
When are sunrise and sunset in December in Mazama?
How long on average sun shines in December in Mazama?
How high is the UV index in December in Mazama?
Average temperature in December
Mazama, WA
- Average high temperature in December: 27.5°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (27.5°F).
- Average low temperature in December: 13.5°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (13.5°F).
Average pressure in December
Mazama, WA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).
Average wind speed in December
Mazama, WA
- Average wind speed in December: 3.6mph
The windiest months (with the highest average wind speed) are June and July (5mph).
The calmest months (with the lowest average wind speed) are January and December (3.6mph).
Average humidity in December
Mazama, WA
- Average humidity in December: 91%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in December
Mazama, WA
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Mazama, WA
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in December
Mazama, WA
- Average snowfall in December: 12.87"
The month with the highest snowfall is December (12.87").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in December
Mazama, WA
- Average snowfall days in December: 15.3 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Mazama, WA
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Mazama, WA
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is August (23 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in December
Mazama, WA
- 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 and November (UV index 1).
Average cloud cover in December
Mazama, WA
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in December
Mazama, WA
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Mazama, Washington, USA
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