Monthly weather forecast and climate
Kennewick, WA

Yellow night lights on the pillars of the iconic Benton Franklin Intercounty Bridge passing over the Columbia River in Kennewick, Washington, dark sky
Yellow night lights on the pillars of the iconic Benton Franklin Intercounty Bridge passing over the Columbia River in Kennewick, Washington, dark sky
January, the same as December, is a cold winter month in Kennewick, Washington, with average temperature ranging between max. 40.5°F (4.7°C) and min. 28°F (-2.2°C). The coldest month is January, with an average high-temperature of 40.5°F (4.7°C) and an average low-temperature of 28°F (-2.2°C). Weather in January »
The last month of the winter, February, is a chilly month in Kennewick, Washington, with average temperature varying between 31.3°F (-0.4°C) and 47.8°F (8.8°C). The average high-temperature, in February, is 47.8°F (8.8°C), while the average low-temperature is 31.3°F (-0.4°C). Weather in February »

The first month of the spring, March, is a mild month in Kennewick, Washington, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 57.9°F (14.4°C). The average high-temperature, in March, is 57.9°F (14.4°C), while the average low-temperature is 36.3°F (2.4°C). Weather in March »

April is a comfortable spring month in Kennewick, Washington, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 42.3°F (5.7°C). In April, the average high-temperature is 66.2°F (19°C), and the average low-temperature is 42.3°F (5.7°C). Weather in April »

May, the last month of the spring, in Kennewick, is a warm month, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 49.3°F (9.6°C). In May, the average high-temperature is 74.1°F (23.4°C), and the average low-temperature is 49.3°F (9.6°C). Weather in May »

June, the first month of the summer, in Kennewick, is also a warm month, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 55.8°F (13.2°C). In Kennewick, Washington, in June, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 55.8°F (13.2°C). Weather in June »

July is a hot summer month in Kennewick, Washington, with average temperature fluctuating between 61°F (16.1°C) and 89.2°F (31.8°C). With an average high-temperature of 89.2°F (31.8°C) and an average low-temperature of 61°F (16.1°C), July is the warmest month. Weather in July »

The last month of the summer, August, is another hot month in Kennewick, Washington, with temperature in the range of an average low of 60.4°F (15.8°C) and an average high of 88.9°F (31.6°C). In August, the average high-temperature is 88.9°F (31.6°C), and the average low-temperature is 60.4°F (15.8°C). Weather in August »

The first month of the autumn, September, is also a warm month in Kennewick, Washington, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 79.5°F (26.4°C). In Kennewick, the average high-temperature is 79.5°F (26.4°C), and the average low-temperature is 51.8°F (11°C). Weather in September »

October, like September, in Kennewick, Washington, is another comfortable autumn month, with average temperature varying between 66.4°F (19.1°C) and 41.9°F (5.5°C). In Kennewick, in October, the average high-temperature is 66.4°F (19.1°C), and the average low-temperature is 41.9°F (5.5°C). Weather in October »

The last month of the autumn, November, is also a fresh month in Kennewick, Washington, with average temperature ranging between min. 35.8°F (2.1°C) and max. 50.4°F (10.2°C). In Kennewick, the average high-temperature is 50.4°F (10.2°C), and the average low-temperature is 35.8°F (2.1°C). Weather in November »

December, the first month of the winter, in Kennewick, is still a cold month, with average temperature fluctuating between 29.3°F (-1.5°C) and 41.2°F (5.1°C). The average high-temperature, in December, is 41.2°F (5.1°C), while the average low-temperature is 29.3°F (-1.5°C). Weather in December »

What is the coldest month in Kennewick?

January is the coldest month in Kennewick, with an average high-temperature of 40.5°F (4.7°C) and an average low-temperature of 28°F (-2.2°C).

How many days does it rain in Kennewick?

Throughout the year, there are 72.3 rainfall days, and 7.8" (197.1mm) of precipitation is accumulated.

When does it snow in Kennewick?

Months with snowfall are January, February, November and December.

How much does it snow in Kennewick?

Throughout the year, there are 3.5 snowfall days, and 8.1" (205.8mm) of snow is accumulated.

When does it snow the most in Kennewick?

The month with the most snowfall is January when snow falls for 1.8 days and typically aggregates up to 4.4" (111.8mm) of snow.

When are the longest days in Kennewick?

With an average of 15.7h of daylight, June has the longest days of the year in Kennewick.

What is the warmest month in Kennewick?

July is the warmest month in Kennewick, with an average high-temperature of 89.2°F (31.8°C) and an average low-temperature of 61°F (16.1°C).

What is the driest month in Kennewick?

August is the month with the least rainfall in Kennewick, Washington. Rain falls for 2.7 days and accumulates 0.2" (4.6mm) of precipitation.

What is the wettest month in Kennewick?

The month with the most rainfall in Kennewick is December when the rain falls for 9.3 days and typically aggregates up to 1.1" (28.7mm) of precipitation.

What is the month with the shortest days in Kennewick?

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

Wettest months (with the highest rainfall) are January and December (1.1").
Driest months (with the lowest rainfall) are July and August (0.2").

Average rainfall days - Kennewick, WA

The month with the highest number of rainy days is January (9.6 days).
The month with the lowest number of rainy days is July (2.5 days).

Average snowfall - Kennewick, WA

The month with the highest snowfall is January (4.4").
Months with the lowest snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days - Kennewick, WA

The month with the highest number of snowfall days is January (1.8 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September and October (0 days).

Average daylight - Kennewick, WA

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

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