January weather forecast
Brinnon, WA

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Weather in January

January, the same as December, in Brinnon, Washington, is a frosty winter month, with an average temperature fluctuating between 44.4°F (6.9°C) and 36°F (2.2°C).

Temperature

As Brinnon transitions from December to January, the average high-temperatures adjust to a still frosty 44.4°F (6.9°C), nearly the same as the previous 42.8°F (6°C). Brinnon, during January nights, witnesses an average temperature marginally cooler than its daytime highs, at a cold 36°F (2.2°C).

Humidity

In January, the average relative humidity is 86%.

Rainfall

January is the month with the most rainfall. Rain falls for 18.1 days and accumulates 4.33" (110mm) of precipitation.

Snowfall

Months with snowfall in Brinnon are January through April, November and December. In January, it is snowing for 1.9 days. Throughout January, 1.38" (35mm) of snow is accumulated. Throughout the year, there are 8.1 snowfall days, and 4.69" (119mm) of snow is accumulated.

Daylight

In Brinnon, the average length of the day in January is 8h and 57min.
On the first day of January, sunrise is at 7:59 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:10 pm PST.

Sunshine

January and December, with an average of 4.6h of sunshine, are months with the least sunshine in Brinnon.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Brinnon, Washington. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 2 in January translates into these instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Enhance your sun protection with tightly woven, yet airy clothing. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

Is January cold in Brinnon?

January temperatures in Brinnon, Washington, vary between a high-temperature of 44.4°F (6.9°C) and a low-temperature of 36°F (2.2°C).

What is the average humidity in January in Brinnon?

The average relative humidity in January in Brinnon is 86%.

What is the wettest month in Brinnon?

The month with the most rainfall in Brinnon, Washington, is January, when the rain falls for 18.1 days and typically aggregates up to 4.33" (110mm) of precipitation.

How much does it rain in Brinnon in January?

In January, in Brinnon, the rain falls for 18.1 days. Throughout January, 4.33" (110mm) of precipitation is accumulated.

How many days does it snow in January in Brinnon?

In Brinnon, Washington, in January, snow falls for 1.9 days, with typically accumulated 1.38" (35mm) of snow.

What is the average length of the day in January in Brinnon?

The average day length in January in Brinnon, Washington, is 8h and 57min.

What time are sunrise and sunset in January in Brinnon?

In January, on the first day of the month, sunrise is at 7:59 am and sunset at 4:30 pm. On the last day of the month, in Brinnon, sunrise is at 7:39 am and sunset at 5:10 pm PST.

What are the months with the least sunshine in Brinnon?

January and December, with an average of 4.6h of sunshine, are months with the least sunshine in Brinnon.

How many hours of sunshine does Brinnon have in January?

The average sunshine duration in January in Brinnon, Washington, is 4.6h.

When is the lowest UV index in Brinnon?

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

How high is the UV index in January in Brinnon?

In January, the average daily maximum UV index in Brinnon is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
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 January
Brinnon, WA

Average temperature in January - Brinnon, WA
  • Average high temperature in January: 44.4°F

The warmest month (with the highest average high temperature) is August (75.7°F).
The month with the lowest average high temperature is December (42.8°F).

  • Average low temperature in January: 36°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (35.2°F).

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Average pressure in January
Brinnon, WA

Average pressure in January - Brinnon, WA
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March and September (30.01"Hg).

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Average wind speed in January
Brinnon, WA

Average wind speed in January - Brinnon, WA
  • Average wind speed in January: 5mph

The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.2mph).

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Average humidity in January
Brinnon, WA

Average humidity in January - Brinnon, WA
  • Average humidity in January: 86%

The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in January
Brinnon, WA

Average rainfall in January - Brinnon, WA
  • Average rainfall in January: 4.33"

The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days in January
Brinnon, WA

Average rainfall days in January - Brinnon, WA
  • Average rainfall days in January: 18.1 days

The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall in January
Brinnon, WA

Average snowfall in January - Brinnon, WA
  • Average snowfall in January: 1.38"

The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Brinnon, WA

Average snowfall days in January - Brinnon, WA
  • Average snowfall days in January: 1.9 days

The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
Brinnon, WA

Average daylight in January / Average sunshine in January - Brinnon, WA
  • Average daylight in January: 8h and 5min

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 January: 4h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).

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Average sunshine days in January
Brinnon, WA

Average sunshine days in January - Brinnon, WA
  • Average sunshine days in January: 10.3 days

The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is February (8.7 days).

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Average UV index in January
Brinnon, WA

Average UV index in January - Brinnon, WA
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Brinnon, WA

Average cloud cover in January - Brinnon, WA
  • Average cloud cover in January: 53

The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in January
Brinnon, WA

Average visibility in January - Brinnon, WA
  • Average visibility in January: 5mi

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

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Brinnon, Washington, USA

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