December weather forecastKeno, OR

December

Weather in December

December, the first month of the winter in Keno, is also an icy month, with an average temperature fluctuating between 37.2°F (2.9°C) and 25°F (-3.9°C).

Temperature

December is Keno's coldest month, registering average high temperatures of 37.2°F (2.9°C) and lows of 25°F (-3.9°C).

Humidity

The average relative humidity in December is 82%.

Rainfall

December is the month with the most rainfall. Rain falls for 10 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Keno. December is the month with the most snowfall. Snow falls for 13.4 days and accumulates 9.57" (243mm) of snow.

Daylight

December has the shortest days of the year, 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 4:36 pm. On the last day of December, in Keno, Oregon, sunrise is at 7:36 am and sunset at 4:46 pm PST.

Sunshine

The average sunshine in December is 5.5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 2 in December translates into this advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Keno, December is the month with the lowest recorded average temperatures, measuring a high of 37.2°F (2.9°C) and a low of 25°F (-3.9°C).

The high-temperature, in December, in Keno, is 37.2°F (2.9°C), while the low-temperature averages to 25°F (-3.9°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 82.4°F (28°C).

In December, the average relative humidity is 82%.

The month with the most rainfall is December, when the rain falls for 10 days and typically aggregates up to 1.97" (50mm) of precipitation.

In Keno, in December, during 10 rainfall days, 1.97" (50mm) of precipitation is typically accumulated.

The month with the most snowfall is December, when snow falls for 13.4 days and typically aggregates up to 9.57" (243mm) of snow.

In Keno, in December, snow falls for 13.4 days, with typically accumulated 9.57" (243mm) of snow.

December has the shortest days of the year, with an average of 9h and 12min of daylight.

The average day length in December is 9h and 10min.

In December, on the first day of the month, sunrise is at 7:17 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:46 pm PST.

In Keno, the average sunshine duration in December is 5.5h.

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

46.8°F

37.2°F

39.2°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6mph

5.9mph

6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

16.5

14.7

15.6

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Keno, OR

Average high temperature in December: 37.2°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (37.2°F).

Average low temperature in December: 25°F

The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is December (25°F).

Average pressure in December
Keno, OR

Average pressure in December: 30.16"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The months with the lowest atmospheric pressure are June, July and August (29.96"Hg).

Average wind speed in December
Keno, OR

Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is March (6.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Keno, OR

Average humidity in December: 82%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (47%).

Average rainfall in December
Keno, OR

Average rainfall in December: 1.97"

The wettest month (with the highest rainfall) is December (1.97").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in December
Keno, OR

Average rainfall days in December: 10 days

The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is August (3.1 days).

Average snowfall in December
Keno, OR

Average snowfall in December: 9.57"

The month with the highest snowfall is December (9.57").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Keno, OR

Average snowfall days in December: 13.4 days

The month with the highest number of snowfall days is December (13.4 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Keno, 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 30min

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 24min).

Average sunshine days in December
Keno, OR

Average sunshine days in December: 14.7 days

The month with the most sunshine days is August (25.7 days).
The month with the least sunshine days is March (11.5 days).

Average UV index in December
Keno, OR

Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Keno, OR

Average cloud cover in December: 44

The months with the most cloud cover are March and December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 8).

Average visibility in December
Keno, 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).