December weather forecast
Kalaloch, WA

Share

Weather in December

December, the first month of the winter in Kalaloch, is still a chilly month, with temperature in the range of an average high of 45.1°F (7.3°C) and an average low of 39.2°F (4°C).

Temperature

With an average high-temperature of 45.1°F (7.3°C) and an average low-temperature of 39.2°F (4°C), December is the coldest month.

Humidity

January, November and December, with an average relative humidity of 84%, are the most humid months.

Rainfall

In Kalaloch, in December, it is raining for 18.5 days, with typically 6.1" (155mm) of accumulated precipitation. Throughout the year, there are 169.3 rainfall days, and 37.83" (961mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, there are 3.9 snowfall days, and 1.5" (38mm) of snow is accumulated.

Daylight

With an average of 8h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:45 am and sunset at 4:27 pm. On the last day of December, sunrise is at 8:05 am and sunset at 4:36 pm PST.

Sunshine

In December, the average sunshine in Kalaloch is 4.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Jun 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Kalaloch?

The lowest temperatures are recorded in December, with averages reaching a high of 45.1°F (7.3°C) and a low of 39.2°F (4°C).

What is the usual temperature for Kalaloch in December?

December temperatures vary between a high-temperature of 45.1°F (7.3°C) and a low-temperature of 39.2°F (4°C).

What are the most humid months?

January, November and December, with an average relative humidity of 84%, are most humid months.

What is the average humidity in December?

In December, the average relative humidity is 84%.

How many days does it rain in December?

In Kalaloch, in December, during 18.5 rainfall days, 6.1" (155mm) of precipitation is typically accumulated.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 0.16" (4mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 30min of daylight.

How many hours of daylight does Kalaloch have in December?

In Kalaloch, the average day length in December is 8h and 31min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:45 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 4:36 pm PST.

How many hours of sunshine does Kalaloch have in December?

In December, the average sunshine duration is 4.1h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In Kalaloch, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Kalaloch, WA

Average temperature in December - Kalaloch, WA
  • Average high temperature in December: 45.1°F

The warmest month (with the highest average high temperature) is August (65.8°F).
The month with the lowest average high temperature is December (45.1°F).

  • Average low temperature in December: 39.2°F

The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is February (38.7°F).

Average pressure in December
Kalaloch, WA

Average pressure in December - Kalaloch, WA
  • Average pressure in December: 30.03"Hg

The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (29.99"Hg).

Average wind speed in December
Kalaloch, WA

Average wind speed in December - Kalaloch, WA
  • Average wind speed in December: 8.8mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in December
Kalaloch, WA

Average humidity in December - Kalaloch, WA
  • Average humidity in December: 84%

The months with the highest relative humidity are January, November and December (84%).
The month with the lowest relative humidity is May (80%).

Average rainfall in December
Kalaloch, WA

Average rainfall in December - Kalaloch, WA
  • Average rainfall in December: 6.1"

The wettest month (with the highest rainfall) is January (6.89").
The driest month (with the least rainfall) is July (0.51").

Average rainfall days in December
Kalaloch, WA

Average rainfall days in December - Kalaloch, WA
  • Average rainfall days in December: 18.5 days

The month with the highest number of rainy days is November (19.4 days).
The month with the least rainy days is August (6.8 days).

Average snowfall in December
Kalaloch, WA

Average snowfall in December - Kalaloch, WA
  • Average snowfall in December: 0.16"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Kalaloch, WA

Average snowfall days in December - Kalaloch, WA
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Kalaloch, WA
  • Average daylight in December: 8h and 3min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 4h and 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in December
Kalaloch, WA

Average sunshine days in December - Kalaloch, WA
  • Average sunshine days in December: 10.4 days

The month with the most sunshine days is August (21.4 days).
The month with the least sunshine days is November (9.4 days).

Average UV index in December
Kalaloch, WA

Average UV index in December - Kalaloch, WA
  • Average UV index in December: 2

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Kalaloch, WA

Average cloud cover in December - Kalaloch, WA
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in December
Kalaloch, WA

Average visibility in December - Kalaloch, WA
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Kalaloch, Washington, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location