December weather forecast
Brownstown, WA

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Weather in December

The first month of the winter, December, is still a cold month in Brownstown, Washington, with an average temperature fluctuating between 35.2°F (1.8°C) and 23.9°F (-4.5°C).

Temperature

Brownstown's December weather, with an average high temperature of 35.2°F (1.8°C) and an average low temperature of 23.9°F (-4.5°C), tends to be the coldest of the year.

Humidity

In December, the average relative humidity in Brownstown is 83%.

Rainfall

In Brownstown, in December, during 10.6 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, in Brownstown, Washington, there are 112.8 rainfall days, and 10.28" (261mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Brownstown, Washington, are January through April, September, November and December. In Brownstown, in December, snow falls for 5.5 days, with typically accumulated 2.87" (73mm) of snow. Throughout the year, in Brownstown, there are 19.9 snowfall days, and 12.36" (314mm) of snow is accumulated.

Daylight

The month with the shortest days in Brownstown is December, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:26 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:45 am and sunset at 4:25 pm PST.

Sunshine

In Brownstown, the average sunshine in December is 5.6h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 2 during December translates into the following directions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What is the coldest month in Brownstown?

Brownstown, Washington, experiences its lowest temperatures in December, with an average peak of 35.2°F (1.8°C) and a low of 23.9°F (-4.5°C).

How cold is December in Brownstown?

During December, Brownstown experiences an average high-temperature of 35.2°F (1.8°C) and a low-temperature of 23.9°F (-4.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 82.4°F (28°C).

What is the average humidity in December in Brownstown?

In December, the average relative humidity is 83%.

How many days does it rain in December in Brownstown?

In Brownstown, in December, it is raining for 10.6 days, with typically 1.57" (40mm) of accumulated precipitation.

How many days does it snow in December in Brownstown?

In Brownstown, Washington, in December, snow falls for 5.5 days, with typically accumulated 2.87" (73mm) of snow.

What is the month with the shortest days in Brownstown?

With an average of 8h and 42min of daylight, December has the shortest days of the year in Brownstown, Washington.

What is the average length of the day in December in Brownstown?

In December, the average day length in Brownstown is 8h and 40min.

When are sunrise and sunset in December in Brownstown?

In December, on the first day of the month, sunrise is at 7:26 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:25 pm PST.

How long on average sun shines in December in Brownstown?

The average sunshine duration in December in Brownstown is 5.6h.

What is the month with the lowest UV index in Brownstown?

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

What is the UV index reading in December in Brownstown?

The average daily maximum UV index in December in Brownstown is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to 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
Brownstown, WA

Average temperature in December - Brownstown, WA
  • Average high temperature in December: 35.2°F

The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (35.2°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

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Average pressure in December
Brownstown, WA

Average pressure in December - Brownstown, WA
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).

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Average wind speed in December
Brownstown, WA

Average wind speed in December - Brownstown, WA
  • Average wind speed in December: 4.5mph

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).

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Average humidity in December
Brownstown, WA

Average humidity in December - Brownstown, WA
  • Average humidity in December: 83%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (43%).

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Average rainfall in December
Brownstown, WA

Average rainfall in December - Brownstown, WA
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is January (1.61").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in December
Brownstown, WA

Average rainfall days in December - Brownstown, WA
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (3.1 days).

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Average snowfall in December
Brownstown, WA

Average snowfall in December - Brownstown, WA
  • Average snowfall in December: 2.87"

The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and October (0").

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Average snowfall days in December
Brownstown, WA

Average snowfall days in December - Brownstown, WA
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

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

Average daylight in December / Average sunshine in December - Brownstown, WA
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 5h and 4min

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

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Average sunshine days in December
Brownstown, WA

Average sunshine days in December - Brownstown, WA
  • Average sunshine days in December: 15.9 days

The month with the most sunshine days is July (25.9 days).
The month with the least sunshine days is February (12.6 days).

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Average UV index in December
Brownstown, WA

Average UV index in December - Brownstown, WA
  • 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, November and December (UV index 2).

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Average cloud cover in December
Brownstown, WA

Average cloud cover in December - Brownstown, WA
  • Average cloud cover in December: 40

The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in December
Brownstown, WA

Average visibility in December - Brownstown, WA
  • Average visibility in December: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).

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Brownstown, Washington, USA

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