December weather forecastKlamath Falls, OR
December
Weather in December
December, the coldest month of the year in Klamath Falls, welcomes winter in full swing. The most profound celebration of winter is reflected in the highest snowfall of the year, marking 10.63" (270mm). The significant dip in temperatures from November and the reduced daylight hours further intensify the wintertime. An increase in humidity along with a decline in pressure adds to the overall frigid December atmosphere, wrapping up the year in a cozy winter envelope. The city is adorned with a beautiful snow blanket, creating a fabulous winter wonderland, making it a breathtaking sight to behold.Temperature
With an average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 25.2°F (-3.8°C), December is the coldest month.Humidity
In December, the average relative humidity is 83%.Rainfall
The month with the most rainfall is December, when the rain falls for 8.4 days and typically aggregates up to 2.09" (53mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. December is the month with the most snowfall. Snow falls for 13.5 days and accumulates 10.63" (270mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:17 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:45 pm PST.
Sunshine
In December, the average sunshine is 5.4h.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Klamath Falls, OR
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (36.9°F).
- Average low temperature in December: 25.2°F
The month with the highest average low temperature is July (48.6°F).
The coldest month (with the lowest average low temperature) is December (25.2°F).
Average pressure in December
Klamath Falls, OR
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in December
Klamath Falls, OR
- Average wind speed in December: 5.3mph
The windiest months (with the highest average wind speed) are March and April (6.3mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity in December
Klamath Falls, OR
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (49%).
Average rainfall in December
Klamath Falls, OR
- Average rainfall in December: 2.09"
The wettest month (with the highest rainfall) is December (2.09").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Klamath Falls, OR
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is April (13.1 days).
The month with the least rainy days is August (3.6 days).
Average snowfall in December
Klamath Falls, OR
- Average snowfall in December: 10.63"
The month with the highest snowfall is December (10.63").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Klamath Falls, OR
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Klamath Falls, OR
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Klamath Falls, OR
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is March (10.6 days).
Average UV index in December
Klamath Falls, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Klamath Falls, OR
- Average cloud cover in December: 46
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in December
Klamath Falls, OR
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
