January weather forecastCrater Lake, OR

January
Weather in January
January continues the trend in having the most quantity of snowfall with 87.4" (2220mm) in Crater Lake, Oregon, making it the month with the highest snow accumulation. The winter chill firmly establishes itself, creating a frosty atmosphere as temperatures remain low. The lake's surrounding appears rather serene with softly falling snow, encapsulating much of the outdoor lifestyle into an icy still picture. The daylight is truncated, paving the way for longer, cold nights. Traveling for leisure activities requires careful planning due to the heavy snowfall and short days.Temperature
The initiation of January sees an average high-temperature of a still icy 34.3°F (1.3°C), showing minor variations from the previous month. In Crater Lake, January's nights observe an average temperature dip to a subzero cold 18.3°F (-7.6°C).Rainfall
In Crater Lake, in January, it is raining for 18 days, with typically 9.41" (239mm) of accumulated precipitation. Throughout the year, there are 145.9 rainfall days, and 66.22" (1682mm) of precipitation is accumulated.Snowfall
January through July, September through December are months with snowfall. In January, it is snowing for 15.9 days. Throughout January, 87.4" (2220mm) of snow is accumulated. In Crater Lake, during the entire year, snow falls for 101.3 days and aggregates up to 482.48" (12255mm) of snow.Daylight
In Crater Lake, the average length of the day in January is 9h and 28min.On the first day of the month, sunrise is at 7:39 am and sunset at 4:44 pm. On the last day of January, sunrise is at 7:24 am and sunset at 5:19 pm PST.
Sunshine
In January, the average sunshine is 4h.UV index
The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Guard yourself! Snow reflection 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 January
Crater Lake, OR
- Average high temperature in January: 34.4°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 January: 18.4°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 January
Crater Lake, OR
- Average rainfall in January: 9.4"
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 January
Crater Lake, OR
- Average rainfall days in January: 18 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 January
Crater Lake, OR
- Average snowfall in January: 87.4"
The month with the highest snowfall is December (91.1").
The month with the least snowfall is August (0").
Average snowfall days in January
Crater Lake, OR
- Average snowfall days in January: 15.9 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 January /
Average sunshine in January
Crater Lake, OR
- Average daylight in January: 9h and 30min
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 January: 4h
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 January
Crater Lake, OR
- Average UV index in January: 2
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).





