West Richland
Washington, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
West Richland, WA

January, the same as December, is a wintry winter month in West Richland, Washington, with average temperature ranging between min 28.8°F (-1.8°C) and max 38.8°F (3.8°C).

Temperature

In January, the average high-temperature is essentially the same as in December - a still cold 38.8°F (3.8°C). In West Richland, the average low-temperature is 28.8°F (-1.8°C).

Humidity

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

Rainfall

In West Richland, Washington, in January, it is raining for 10.9 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in West Richland, Washington, there are 100.2 rainfall days, and 7.05" (179mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In West Richland, during 2.5 snowfall days, 1.06" (27mm) of snow is typically accumulated. In West Richland, during the entire year, snow falls for 10.4 days, and aggregates up to 5.35" (136mm) of snow.

Daylight

In January, the average length of the day in West Richland, Washington, is 9.1h.

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. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in January in West Richland?

The average high-temperature, in January, in West Richland, Washington, is 38.8°F (3.8°C), while the average low-temperature is 28.8°F (-1.8°C).

What is the most humid month in West Richland?

The most humid month in West Richland, Washington, is January, with an average relative humidity of 81%.

What is the average humidity in January in West Richland?

The average relative humidity in January is 81%.

How much does it rain in West Richland in January?

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

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

In January, it is snowing for 2.5 days. Throughout January, 1.06" (27mm) of snow is accumulated.

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

The average length of the day in January in West Richland, Washington, is 9.1h.

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

The month with the least sunshine in West Richland is January, with an average of 5.4h of sunshine.

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

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

What are the months with the lowest UV index in West Richland?

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

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

The average daily maximum UV index in January in West Richland, Washington, is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV rays.
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).

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%).

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").

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).

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

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

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).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in January / Average sunshine in January - West Richland, WA
  • Average daylight in January: 9.1h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in January: 5.4h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is January (Average sunshine: 5.4h).

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).
Months with the lowest UV index are January, February, November and December (UV index 2).