A beautiful landscape of the Crater Lake in Oregon, viewed from atop the Watchman's Peak
Weather in December
December solidifies the onset of the winter season in Crater Lake with a further increase in snowfall to 91.1" (2314mm). Temperatures plummet, bringing the crisp, cold winter air. The short daylight hours and long, chilly nights define the month. Rainfall is at its peak, contributing to the frosty conditions and creating thick layers of ice around the lake. Despite the cold and snow, Crater Lake continues to captivate with its mesmerizing icy landscape.
On the first day of December, sunrise is at 7:20 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:44 pm PST.
Note: The maximum daily UV index of 1 during December translates into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
[Resources]Temperature
December, characterized by an average high temperature of 33.6°F (0.9°C) and a low temperature of 18.1°F (-7.7°C), is generally the coldest month.Rainfall
December is the month with the most rainfall in Crater Lake. Rain falls for 18.1 days and accumulates 11.57" (294mm) of precipitation.Snowfall
Months with snowfall are January through July, September through December. The month with the most snowfall in Crater Lake is December, when snow falls for 16.4 days and typically aggregates up to 91.1" (2314mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Crater Lake.On the first day of December, sunrise is at 7:20 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:44 pm PST.
Sunshine
The months with the least sunshine in Crater Lake, Oregon, are November and December, with an average of 3h of sunshine.UV index
The month with the lowest UV index in Crater Lake is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 1 during December translates into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What month is the coldest in Crater Lake?
December, characterized by an average high temperature of 33.6°F (0.9°C) and a low temperature of 18.1°F (-7.7°C), is generally the coldest month in Crater Lake.
How cold is December in Crater Lake?
In December, the average high-temperature and low-temperature in Crater Lake, Oregon, are 33.6°F (0.9°C) and 18.1°F (-7.7°C) respectively.
What is the rainiest month in Crater Lake?
December is the month with the most rainfall in Crater Lake, Oregon. Rain falls for 18.1 days and accumulates 11.57" (294mm) of precipitation.
How many days does it rain in December in Crater Lake?
In December, the rain falls for 18.1 days. Throughout December, 11.57" (294mm) of precipitation is accumulated.
When does it snow the most in Crater Lake?
December is the month with the most snowfall in Crater Lake, Oregon. Snow falls for 16.4 days and accumulates 91.1" (2314mm) of snow.
How many days does it snow in December in Crater Lake?
In Crater Lake, in December, snow falls for 16.4 days, with typically accumulated 91.1" (2314mm) of snow.
What is the month with the shortest days in Crater Lake?
December has the shortest days of the year in Crater Lake, Oregon, with an average of 9h and 6min of daylight.
How many hours of daylight does Crater Lake have in December?
In Crater Lake, the average day length in December is 9h and 5min.
When are sunrise and sunset in December in Crater Lake?
In December, on the first day of the month, sunrise is at 7:20 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:44 pm PST.
What are the months with the least sunshine in Crater Lake?
November and December, with an average of 3h of sunshine, are months with the least sunshine in Crater Lake.
How long on average sun shines in December in Crater Lake?
In December, the average sunshine duration is 3h.
What is the month with the lowest UV index in Crater Lake?
December is the month with the lowest UV index in Crater Lake, Oregon, with an average maximum UV index of 1.
What is the UV index intensity in December in Crater Lake?
In Crater Lake, Oregon, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average temperature in December
Crater Lake, OR
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is August (69.7°F).
The month with the lowest average high temperature is December (33.6°F).
- Average low temperature in December: 18.1°F
The months with the highest average low temperature are July and August (40.5°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average rainfall in December
Crater Lake, OR
- Average rainfall in December: 11.6"
The wettest month (with the highest rainfall) is December (11.6").
The driest months (with the least rainfall) are July and August (1").
Average rainfall days in December
Crater Lake, OR
- Average rainfall days in December: 18.1 days
The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is July (3.9 days).
Average snowfall in December
Crater Lake, OR
- Average snowfall in December: 91.1"
The month with the highest snowfall is December (91.1").
The month with the least snowfall is August (0").
Average snowfall days in December
Crater Lake, OR
- Average snowfall days in December: 16.4 days
The month with the highest number of snowfall days is December (16.4 days).
The month with the least snowfall days is August (0 days).
Average daylight in December /
Average sunshine in December
Crater Lake, OR
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h
The month with the most sunshine is July (Average sunshine: 12h).
The months with the least sunshine are November and December (Average sunshine: 3h).
Average UV index in December
Crater Lake, OR
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).
Crater Lake, Oregon, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
