December weather forecast
Klamath Falls, OR

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

The first month of the winter, December, is still a cold month in Klamath Falls, Oregon, with an average temperature ranging between max 36.9°F (2.7°C) and min 25.2°F (-3.8°C).

Temperature

December is the coldest month, with an average high-temperature of 36.9°F (2.7°C) and an average low-temperature 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

Months with snowfall in Klamath Falls are January through June, September through December. December is the month with the most snowfall in Klamath Falls. Snow falls for 13.5 days and accumulates 10.63" (270mm) of snow.

Daylight

With an average of 9h and 9min of daylight, December has the shortest days of the year in Klamath Falls.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:35 am and sunset at 4:44 pm PST.

Sunshine

In December, the average sunshine is 5.4h.

UV index

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Klamath Falls?

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.

What is the average humidity in December in Klamath Falls?

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

What is the rainiest month in Klamath Falls?

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.

How many days does it rain in December in Klamath Falls?

In Klamath Falls, Oregon, in December, during 8.4 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When does it snow the most in Klamath Falls?

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.

How much does it snow in Klamath Falls in December?

In Klamath Falls, Oregon, in December, during 13.5 snowfall days, 10.63" (270mm) of snow is typically accumulated.

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

With an average of 9h and 9min of daylight, December has the shortest days of the year in Klamath Falls, Oregon.

How many hours of daylight does Klamath Falls have in December?

The average day length in December in Klamath Falls is 9h and 9min.

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

In December, on the first day of the month, sunrise is at 7:16 am and sunset at 4:36 pm. On the last day of the month, in Klamath Falls, sunrise is at 7:35 am and sunset at 4:44 pm PST.

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

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

What is the UV index intensity in December in Klamath Falls?

In Klamath Falls, Oregon, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.

Average temperature in December
Klamath Falls, OR

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / Average sunshine in December - Klamath Falls, OR
  • Average daylight in December: 9h and 9min

The month with the longest days is June (Average daylight: 15h and 13min).
The month with the shortest days is December (Average daylight: 9h and 9min).

  • Average sunshine in December: 5.4h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is January (Average sunshine: 5.3h).

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Average sunshine days in December
Klamath Falls, OR

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 - 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 - 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 - 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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