January weather forecast
Sedro-Woolley, WA

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Weather in January

January, like December, in Sedro-Woolley, Washington, is an icy winter month, with an average temperature varying between 33.6°F (0.9°C) and 42.1°F (5.6°C).

Temperature

The shift to January signals an average high-temperature of a still cold 42.1°F (5.6°C), subtly varied from December's 40.5°F (4.7°C). January records a small disparity from daytime temperatures, marking an average low-temperature of 33.6°F (0.9°C).

Humidity

The months with the highest humidity in Sedro-Woolley are January through March, with an average relative humidity of 86%.

Rainfall

In Sedro-Woolley, in January, during 18.8 rainfall days, 6.54" (166mm) of precipitation is typically accumulated. Throughout the year, in Sedro-Woolley, Washington, there are 203.2 rainfall days, and 49.72" (1263mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Sedro-Woolley. In January, it is snowing for 2.6 days. Throughout January, 3.62" (92mm) of snow is accumulated. Throughout the year, there are 12 snowfall days, and 12.32" (313mm) of snow is accumulated.

Daylight

In January, the average length of the day is 8h and 51min.
On the first day of the month, sunrise is at 8:00 am and sunset at 4:24 pm. On the last day of January, in Sedro-Woolley, sunrise is at 7:39 am and sunset at 5:05 pm PST.

Sunshine

In Sedro-Woolley, Washington, the average sunshine in January is 3.8h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the maximum UV index of 2 transforms into these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

How cold is January in Sedro-Woolley?

The high-temperature in Sedro-Woolley during January is 42.1°F (5.6°C) and the low-temperature is 33.6°F (0.9°C).

What are the most humid months in Sedro-Woolley?

The months with the highest humidity in Sedro-Woolley are January through March, with an average relative humidity of 86%.

What is the average humidity in January in Sedro-Woolley?

The average relative humidity in January in Sedro-Woolley, Washington, is 86%.

How much does it rain in Sedro-Woolley in January?

In Sedro-Woolley, Washington, during January, the rain falls for 18.8 days and regularly aggregates up to 6.54" (166mm) of precipitation.

How many days does it snow in January in Sedro-Woolley?

In Sedro-Woolley, Washington, in January, snow falls for 2.6 days, with typically accumulated 3.62" (92mm) of snow.

How many hours of daylight does Sedro-Woolley have in January?

In January, the average day length in Sedro-Woolley is 8h and 51min.

When is the sunrise / sunset in January in Sedro-Woolley?

On the first day of January in Sedro-Woolley, Washington, sunrise is at 8:00 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:05 pm PST.

How long on average sun shines in January in Sedro-Woolley?

In Sedro-Woolley, Washington, the average sunshine duration in January is 3.8h.

When is the lowest UV index in Sedro-Woolley?

The months with the lowest UV index in Sedro-Woolley, Washington, are January through March, October through December, with an average maximum UV index of 2.

What is the UV index intensity in January in Sedro-Woolley?

In January, the average daily maximum UV index in Sedro-Woolley is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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 January
Sedro-Woolley, WA

Average temperature in January - Sedro-Woolley, WA
  • Average high temperature in January: 42.1°F

The warmest month (with the highest average high temperature) is July (70.9°F).
The month with the lowest average high temperature is December (40.5°F).

  • Average low temperature in January: 33.6°F

The month with the highest average low temperature is August (50.5°F).
The coldest months (with the lowest average low temperature) are February and December (32.5°F).

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Average pressure in January
Sedro-Woolley, WA

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

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in January
Sedro-Woolley, WA

Average wind speed in January - Sedro-Woolley, WA
  • Average wind speed in January: 5.5mph

The windiest month (with the highest average wind speed) is November (5.7mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).

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Average humidity in January
Sedro-Woolley, WA

Average humidity in January - Sedro-Woolley, WA
  • Average humidity in January: 86%

The months with the highest relative humidity are January, February and March (86%).
The month with the lowest relative humidity is July (75%).

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Average rainfall in January
Sedro-Woolley, WA

Average rainfall in January - Sedro-Woolley, WA
  • Average rainfall in January: 6.54"

The wettest month (with the highest rainfall) is November (7.09").
The driest month (with the least rainfall) is July (0.98").

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Average rainfall days in January
Sedro-Woolley, WA

Average rainfall days in January - Sedro-Woolley, WA
  • Average rainfall days in January: 18.8 days

The month with the highest number of rainy days is March (22.1 days).
The month with the least rainy days is August (9.4 days).

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Average snowfall in January
Sedro-Woolley, WA

Average snowfall in January - Sedro-Woolley, WA
  • Average snowfall in January: 3.62"

The month with the highest snowfall is February (4.96").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Sedro-Woolley, WA

Average snowfall days in January - Sedro-Woolley, WA
  • Average snowfall days in January: 2.6 days

The month with the highest number of snowfall days is February (4.3 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
Sedro-Woolley, WA

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

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).

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Average sunshine days in January
Sedro-Woolley, WA

Average sunshine days in January - Sedro-Woolley, WA
  • Average sunshine days in January: 9.9 days

The month with the most sunshine days is August (19.2 days).
The month with the least sunshine days is March (7.3 days).

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Average UV index in January
Sedro-Woolley, WA

Average UV index in January - Sedro-Woolley, WA
  • Average UV index in January: 2

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

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Average cloud cover in January
Sedro-Woolley, WA

Average cloud cover in January - Sedro-Woolley, WA
  • Average cloud cover in January: 60

The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in January
Sedro-Woolley, WA

Average visibility in January - Sedro-Woolley, WA
  • Average visibility in January: 5mi

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

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Sedro-Woolley, Washington, USA

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