January weather forecast
West Richland, WA

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Weather in January

January, like December, in West Richland, Washington, is another cold winter month, with an average temperature fluctuating between 38.8°F (3.8°C) and 28.8°F (-1.8°C).

Temperature

The arrival of January denotes a barely perceptible change in the average high-temperatures to a still icy 38.8°F (3.8°C) from December's 38.1°F (3.4°C). The average low-temperature during January nights is a freezing cold 28.8°F (-1.8°C).

Humidity

January is the most humid month, with an average relative humidity of 81%.

Rainfall

In January, the rain falls for 10.9 days. Throughout January, 0.91" (23mm) of precipitation is accumulated. In West Richland, during the entire year, the rain falls for 100.2 days and collects up to 7.05" (179mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In West Richland, in January, during 2.5 snowfall days, 1.06" (27mm) of snow is typically accumulated. Throughout the year, there are 10.4 snowfall days, and 5.35" (136mm) of snow is accumulated.

Daylight

In January, the average length of the day in West Richland is 9h and 6min.
On the first day of January in West Richland, sunrise is at 7:40 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:59 pm PST.

Sunshine

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

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in West Richland, Washington. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 2 during January leads to these instructions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

Is January cold in West Richland?

In West Richland, 38.8°F (3.8°C) is the average high-temperature and 28.8°F (-1.8°C) is the average low-temperature during January.

What is the most humid month in West Richland?

With an average relative humidity of 81%, January is the most humid month in West Richland.

What is the average humidity in January in West Richland?

In January, the average relative humidity in West Richland is 81%.

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

In West Richland, in January, during 10.9 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

How much does it snow in West Richland in January?

In West Richland, Washington, in January, snow falls for 2.5 days, with typically accumulated 1.06" (27mm) of snow.

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

In January, the average day length in West Richland, Washington, is 9h and 6min.

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

On the first day of January in West Richland, Washington, sunrise is at 7:40 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:59 pm PST.

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

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

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

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

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

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

How high is the UV index in January in West Richland?

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from 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
West Richland, WA

Average temperature in January - West Richland, WA
  • Average high temperature in January: 38.8°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 (38.1°F).

  • Average low temperature in January: 28.8°F

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (27.5°F).

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Average pressure in January
West Richland, WA

Average pressure in January - West Richland, WA
  • Average pressure in January: 30.18"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in January
West Richland, WA

Average wind speed in January - West Richland, WA
  • Average wind speed in January: 6mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is December (5.6mph).

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Average humidity in January
West Richland, WA

Average humidity in January - West Richland, WA
  • Average humidity in January: 81%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is July (35%).

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Average rainfall in January
West Richland, WA

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

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

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Average rainfall days in January
West Richland, WA

Average rainfall days in January - West Richland, WA
  • Average rainfall days in January: 10.9 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (3.5 days).

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Average snowfall in January
West Richland, WA

Average snowfall in January - West Richland, WA
  • Average snowfall in January: 1.06"

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 Richland, WA

Average snowfall days in January - West Richland, WA
  • Average snowfall days in January: 2.5 days

The month with the highest number of snowfall days is December (3.3 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 Richland, WA

Average daylight in January / Average sunshine in January - West Richland, 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 Richland, WA

Average sunshine days in January - West Richland, WA
  • Average sunshine days in January: 16.2 days

The month with the most sunshine days is July (25.7 days).
The months with the least sunshine days are February and March (15.3 days).

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Average UV index in January
West Richland, WA

Average UV index in January - West Richland, 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 Richland, WA

Average cloud cover in January - West Richland, 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 Richland, WA

Average visibility in January - West Richland, 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 Richland, Washington, USA

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