December weather forecastStehekin, WA

December

Weather in December

December, the first month of the winter in Stehekin, is also a subzero cold month, with an average temperature fluctuating between 12.6°F (-10.8°C) and 25.7°F (-3.5°C).

Temperature

During the coldest month, December, temperatures average a high of 25.7°F (-3.5°C) and a low of 12.6°F (-10.8°C).

Humidity

January, February and December, with an average relative humidity of 93%, are the most humid months.

Rainfall

The wettest months are January and December, with an average 1.34" (34mm) of rainfall.

Snowfall

January through July, September through December are months with snowfall. December is the month with the most snowfall. Snow falls for 13.6 days and accumulates 9.8" (249mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 24min of daylight.
On the first day of the month, sunrise is at 7:33 am and sunset at 4:10 pm. On the last day of December, sunrise is at 7:53 am and sunset at 4:18 pm PST.

Sunshine

In Stehekin, the average sunshine in December is 3.7h.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the maximum UV index of 1 translates into these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.

Updated: Aug 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December is the coldest month, with the temperature often reaching an average high of 25.7°F (-3.5°C) and an average low of 12.6°F (-10.8°C).

Stehekin in December has an average high-temperature of 25.7°F (-3.5°C) and an average low-temperature of 12.6°F (-10.8°C).

January, February and December, with an average relative humidity of 93%, are most humid months.

The average relative humidity in December is 93%.

The months with the most rainfall are January and December, with an average 1.34" (34mm) of precipitation.

In Stehekin, during December, the rain falls for 2.1 days and regularly aggregates up to 1.34" (34mm) of precipitation.

December is the month with the most snowfall. Snow falls for 13.6 days and accumulates 9.8" (249mm) of snow.

In Stehekin, in December, during 13.6 snowfall days, 9.8" (249mm) of snow is typically accumulated.

With an average of 8h and 24min of daylight, December has the shortest days of the year.

In December, the average day length is 8h and 25min.

On the first day of December, sunrise is at 7:33 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:18 pm PST.

The average sunshine duration in December is 3.7h.

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to 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

32°F

25.7°F

27.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.8mph

4.5mph

4.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

17.6

17.9

18.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Stehekin, WA

Average high temperature in December: 25.7°F

The warmest month (with the highest average high temperature) is August (71.4°F).
The month with the lowest average high temperature is December (25.7°F).

Average low temperature in December: 12.6°F

The month with the highest average low temperature is August (46.4°F).
The coldest month (with the lowest average low temperature) is December (12.6°F).

Average pressure in December
Stehekin, WA

Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).

Average wind speed in December
Stehekin, WA

Average wind speed in December: 4.2mph

The windiest month (with the highest average wind speed) is June (5.2mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).

Average humidity in December
Stehekin, WA

Average humidity in December: 93%

The months with the highest relative humidity are January, February and December (93%).
The months with the lowest relative humidity are July and August (60%).

Average rainfall in December
Stehekin, WA

Average rainfall in December: 1.34"

The wettest months (with the highest rainfall) are January and December (1.34").
The driest month (with the least rainfall) is August (0.43").

Average rainfall days in December
Stehekin, WA

Average rainfall days in December: 2.1 days

The month with the highest number of rainy days is June (10.4 days).
The month with the least rainy days is December (2.1 days).

Average snowfall in December
Stehekin, WA

Average snowfall in December: 9.8"

The month with the highest snowfall is December (9.8").
The month with the least snowfall is August (0").

Average snowfall days in December
Stehekin, WA

Average snowfall days in December: 13.6 days

The month with the highest number of snowfall days is March (13.7 days).
The month with the least snowfall days is August (0.2 days).

Average daylight in December /
Average sunshine in December
Stehekin, WA

Average daylight in December: 8h and 24min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

Average sunshine in December: 3h and 42min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in December
Stehekin, WA

Average sunshine days in December: 17.9 days

The month with the most sunshine days is August (22.9 days).
The months with the least sunshine days are April and May (15.4 days).

Average UV index in December
Stehekin, WA

Average UV index in December: 1

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in December
Stehekin, WA

Average cloud cover in December: 64

The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in December
Stehekin, WA

Average visibility in December: 3mi

The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January and February (2mi).