December weather - Winter 2024

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

Calm water on either side of a wavy road leading to the far seen hilly scape near the iconic Klamath Falls in Oregon

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

December stands out as Klamath Falls's coldest month, with temperatures ranging between an average high of 36.9°F (2.7°C) and a low of 25.2°F (-3.8°C).

Humidity

The average relative humidity in December is 83%.

Rainfall

December is the month with the most rainfall in Klamath Falls. Rain falls for 8.4 days and accumulates 2.09" (53mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. The month with the most snowfall is December, when snow falls for 13.5 days and typically aggregates up to 10.63" (270mm) of snow.

Daylight

The month with the shortest days in Klamath Falls is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:35 am and sunset at 4:45 pm PST.

Sunshine

In Klamath Falls, the average sunshine in December is 5.4h.

UV index

In December, the average daily maximum UV index in Klamath Falls is 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a regular UV index of 2 translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

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Frequently asked questions

What is the coldest time of year in Klamath Falls?

December brings the lowest temperatures in Klamath Falls, with an average high of 36.9°F (2.7°C) and an average low of 25.2°F (-3.8°C).

How cold is December in Klamath Falls?

During December, Klamath Falls experiences an average high-temperature of 36.9°F (2.7°C) and a low-temperature of 25.2°F (-3.8°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in August is evaluated at 80.6°F (27°C).

What is the average humidity in December in Klamath Falls?

In December, the average relative humidity in Klamath Falls, Oregon, is 83%.

What is the rainiest month in Klamath Falls?

December is the month with the most rainfall. Rain falls for 8.4 days and accumulates 2.09" (53mm) of precipitation.

How much does it rain in Klamath Falls in December?

In Klamath Falls, in December, it is raining for 8.4 days, with typically 2.09" (53mm) of accumulated precipitation.

What is the snowiest month in Klamath Falls?

December is the month with the most snowfall. Snow falls for 13.5 days and accumulates 10.63" (270mm) of snow.

How much does it snow in Klamath Falls in December?

In Klamath Falls, Oregon, during December, snow falls for 13.5 days and regularly aggregates up to 10.63" (270mm) of snow.

What is the month with the shortest days in Klamath Falls?

The month with the shortest days in Klamath Falls, Oregon, is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December in Klamath Falls?

In December, the average day length in Klamath Falls is 9h and 9min.

What time are sunrise and sunset in December in Klamath Falls?

On the first day of December in Klamath Falls, 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.

How long on average sun shines in December in Klamath Falls?

The average sunshine duration in December in Klamath Falls, Oregon, is 5.4h.

How high is the UV index in December in Klamath Falls?

In Klamath Falls, Oregon, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

46°F 7.8°C

36.9°F 2.7°C

38.7°F 3.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6mph 9.7km/h

5.8mph 9.3km/h

5.9mph 9.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

16.2

13.6

14.9

Average UV index

Average cloud cover

Average visibility

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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Average daylight in December /
Average sunshine in December
Klamath Falls, OR

Average daylight in December: 9h and 1min

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 2min

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).

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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).

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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).

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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).

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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).

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December weather forecast
Klamath Falls, OR

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