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

Monthly weather forecast and climate
West Richland, WA

January, like December, in West Richland, Washington, is a wintry winter month, with average temperature varying between 28.8°F (-1.8°C) and 38.8°F (3.8°C). In West Richland, the average high-temperature is essentially the same as in December - a still cold 38.8°F (3.8°C). Weather in January »

The last month of the winter, February, is a frosty month in West Richland, Washington, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 44.4°F (6.9°C). In West Richland, the average high-temperature in February marginally rises, from a cold 38.8°F (3.8°C) in January, to a chilly 44.4°F (6.9°C). Weather in February »

The first month of the spring, March, is a fresh month in West Richland, Washington, with average temperature varying between 37.9°F (3.3°C) and 54.7°F (12.6°C). In March, the average high-temperature rises, from a chilly 44.4°F (6.9°C) in February, to a fresh 54.7°F (12.6°C). Weather in March »

April is a comfortable spring month in West Richland, Washington, with temperature in the range of an average high of 63.3°F (17.4°C) and an average low of 43.2°F (6.2°C). In April, the average high-temperature marginally rises, from a fresh 54.7°F (12.6°C) in March, to a comfortable 63.3°F (17.4°C). Weather in April »

May, the last month of the spring, in West Richland, is a pleasant month, with average temperature fluctuating between 73°F (22.8°C) and 50.7°F (10.4°C). In May, the average high-temperature increases, from a comfortable 63.3°F (17.4°C) in April, to an agreeable 73°F (22.8°C). Weather in May »

June, the first month of the summer, in West Richland, is a moderately hot month, with average temperature ranging between min 56.7°F (13.7°C) and max 80.2°F (26.8°C). In June, the average high-temperature slightly increases, from an agreeable 73°F (22.8°C) in May, to a warm 80.2°F (26.8°C). Weather in June »

July in West Richland, Washington, is a hot summer month, with temperature in the range of an average high of 90.1°F (32.3°C) and an average low of 62.8°F (17.1°C). July is the warmest month, with an average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 62.8°F (17.1°C). Weather in July »

August, the last month of the summer, in West Richland, is also a hot month, with temperature in the range of an average high of 89.4°F (31.9°C) and an average low of 64.2°F (17.9°C). In August, the average high-temperature is almost the same as in July - a still hot 89.4°F (31.9°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in West Richland, Washington, with average temperature varying between 57°F (13.9°C) and 78.6°F (25.9°C). In West Richland, the average high-temperature in September drops, from a hot 89.4°F (31.9°C) in August, to a moderately hot 78.6°F (25.9°C). Weather in September »

October, the same as September, is another comfortable autumn month in West Richland, Washington, with average temperature ranging between max 62.4°F (16.9°C) and min 46.6°F (8.1°C). In October, the average high-temperature significantly decreases, from a warm 78.6°F (25.9°C) in September, to a comfortable 62.4°F (16.9°C). Weather in October »

The last month of the autumn, November, is also a frosty month in West Richland, Washington, with average temperature varying between 48.7°F (9.3°C) and 36.3°F (2.4°C). In West Richland, the average high-temperature in November drops, from a comfortable 62.4°F (16.9°C) in October, to a frosty 48.7°F (9.3°C). Weather in November »

December, the first month of the winter, in West Richland, is also a wintry month, with temperature in the range of an average low of 27.5°F (-2.5°C) and an average high of 38.1°F (3.4°C). December is the coldest month, with an average high-temperature of 38.1°F (3.4°C) and an average low-temperature of 27.5°F (-2.5°C). Weather in December »

What is the most humid month in West Richland?

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

How many days does it rain in West Richland?

In West Richland, during the entire year, the rain falls for 100.2 days and collects up to 7.05" (179mm) of precipitation.

When does it snow in West Richland?

Months with snowfall are January through March, November and December.

How much does it snow in West Richland?

Throughout the year, there are 10.4 snowfall days, and 5.35" (136mm) of snow is accumulated.

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.

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

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

What is the snowiest month in West Richland?

February is the month with the most snowfall. Snow falls for 2.9 days and accumulates 2.2" (56mm) of snow.

When it does not snow in West Richland?

In West Richland, Washington, snow does not fall in April through October.

When are the longest days in West Richland?

June has the longest days of the year, with an average of 15.7h of daylight.

What is the warmest month in West Richland?

With an average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 62.8°F (17.1°C), July is the warmest month.

What is the least humid month in West Richland?

With an average relative humidity of 35%, July is the least humid month in West Richland, Washington.

What is the driest month in West Richland?

July and September are months with the least rain in West Richland, Washington, when the rain falls for 3.5 days and typically aggregates up to 0.2" (5mm) of rain.

What month has the most sunshine in West Richland?

The month with the most sunshine is July, with an average of 12.1h of sunshine.

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

With an average maximum UV index of 7, July is the month with the highest UV index in West Richland, Washington.

What is the coldest month in West Richland?

The coldest month in West Richland, Washington, is December, with an average high-temperature of 38.1°F (3.4°C) and an average low-temperature of 27.5°F (-2.5°C).

What is the wettest month in West Richland?

The month with the most rainfall in West Richland, Washington, is December when the rain falls for 10.3 days and typically aggregates up to 0.94" (24mm) of precipitation.

What is the month with the shortest days in West Richland?

The month with the shortest days is December, with an average of 8.7h of daylight.
Average temperature - West Richland, WA
Average rainfall - West Richland, WA

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

Average rainfall days - West Richland, WA

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

Average snowfall - West Richland, WA

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

Average snowfall days - West Richland, WA

The month with the highest number of snowfall days is December (3.3 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight / Average sunshine - West Richland, WA
Average UV index - West Richland, WA