January weather forecast
West Pasco, WA

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Weather in January

January, like December, in West Pasco, Washington, is another cold winter month, with an average temperature fluctuating between 39°F (3.9°C) and 28.8°F (-1.8°C).

Temperature

With January's arrival, West Pasco's weather records an average high-temperature of a still wintry 39°F (3.9°C), marking little difference from December's 38.3°F (3.5°C). Throughout the month of January, West Pasco sees a steady low-temperature average of 28.8°F (-1.8°C).

Humidity

The most humid month in West Pasco is January, with an average relative humidity of 80%.

Rainfall

In West Pasco, in January, it is raining for 10.8 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, there are 102.8 rainfall days, and 7.32" (186mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In West Pasco, in January, snow falls for 2.3 days, with typically accumulated 1.02" (26mm) of snow. Throughout the year, there are 9.7 snowfall days, and 5.2" (132mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 7min.
On the first day of the month, sunrise is at 7:39 am and sunset at 4:20 pm. On the last day of January, in West Pasco, sunrise is at 7:20 am and sunset at 4:59 pm PST.

Sunshine

January has the least sunshine of the year in West Pasco, with an average of 5.4h of sunshine.

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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Frequently asked questions

How cold is January in West Pasco?

In West Pasco, in January, the average high-temperature is 39°F (3.9°C), and the average low-temperature is 28.8°F (-1.8°C).

What is the most humid month in West Pasco?

The most humid month in West Pasco is January, with an average relative humidity of 80%.

What is the average humidity in January in West Pasco?

In West Pasco, Washington, the average relative humidity in January is 80%.

How many days does it rain in January in West Pasco?

In West Pasco, Washington, in January, it is raining for 10.8 days, with typically 0.91" (23mm) of accumulated precipitation.

How much does it snow in West Pasco in January?

In January, it is snowing for 2.3 days. Throughout January, 1.02" (26mm) of snow is accumulated.

What is the average length of the day in January in West Pasco?

In West Pasco, the average day length in January is 9h and 7min.

When is the sunrise / sunset in January in West Pasco?

On the first day of January in West Pasco, Washington, sunrise is at 7:39 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:59 pm PST.

What is the month with the least sunshine in West Pasco?

With an average of 5.4h of sunshine, January has the least sunshine of the year in West Pasco, Washington.

How long on average sun shines in January in West Pasco?

In West Pasco, the average sunshine duration in January is 5.4h.

What is the month with the lowest UV index in West Pasco?

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

What is the UV index intensity in January in West Pasco?

In West Pasco, Washington, the average daily maximum UV index in January 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 January
West Pasco, WA

Average temperature in January - West Pasco, WA
  • Average high temperature in January: 39°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (38.3°F).

  • Average low temperature in January: 28.8°F

The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).

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Average pressure in January
West Pasco, WA

Average pressure in January - West Pasco, WA
  • Average pressure in January: 30.19"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in January
West Pasco, WA

Average wind speed in January - West Pasco, WA
  • Average wind speed in January: 6.3mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).

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Average humidity in January
West Pasco, WA

Average humidity in January - West Pasco, WA
  • Average humidity in January: 80%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (35%).

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Average rainfall in January
West Pasco, WA

Average rainfall in January - West Pasco, WA
  • Average rainfall in January: 0.91"

The wettest months (with the highest rainfall) are March and December (0.94").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days in January
West Pasco, WA

Average rainfall days in January - West Pasco, WA
  • Average rainfall days in January: 10.8 days

The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (3.5 days).

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Average snowfall in January
West Pasco, WA

Average snowfall in January - West Pasco, WA
  • Average snowfall in January: 1.02"

The month with the highest snowfall is February (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in January
West Pasco, WA

Average snowfall days in January - West Pasco, WA
  • Average snowfall days in January: 2.3 days

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

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Average daylight in January /
Average sunshine in January
West Pasco, WA

Average daylight in January / Average sunshine in January - West Pasco, WA
  • Average daylight in January: 9h and 1min

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 January: 5h and 2min

The month with the most sunshine is July (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 January
West Pasco, WA

Average sunshine days in January - West Pasco, WA
  • Average sunshine days in January: 16.4 days

The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (15.4 days).

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Average UV index in January
West Pasco, WA

Average UV index in January - West Pasco, WA
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 7).
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
West Pasco, WA

Average cloud cover in January - West Pasco, WA
  • Average cloud cover in January: 44

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

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Average visibility in January
West Pasco, WA

Average visibility in January - West Pasco, WA
  • Average visibility in January: 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).

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West Pasco, Washington, USA

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