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

Monthly weather forecast and climate
Richland, WA

January, the same as December, is a wintry winter month in Richland, Washington, with temperature in the range of an average high of 41°F (5°C) and an average low of 28.9°F (-1.7°C). In Richland, Washington, the average high-temperature is essentially the same as in December - a still cold 41°F (5°C). Weather in January »
February, the last month of the winter, in Richland, is a chilly month, with average temperature ranging between min 30°F (-1.1°C) and max 48°F (8.9°C). In Richland, the average high-temperature slightly increases, from a wintry 41°F (5°C) in January, to a frosty 48°F (8.9°C). Weather in February »

March, the first month of the spring, in Richland, is a moderate month, with temperature in the range of an average high of 57.9°F (14.4°C) and an average low of 35.1°F (1.7°C). In March, the average high-temperature rises, from a frosty 48°F (8.9°C) in February, to a mild 57.9°F (14.4°C). Weather in March »

April is an enjoyable spring month in Richland, Washington, with average temperature fluctuating between 41°F (5°C) and 64.9°F (18.3°C). In Richland, the average high-temperature in April slightly increases, from a moderate 57.9°F (14.4°C) in March, to an enjoyable 64.9°F (18.3°C). Weather in April »

The last month of the spring, May, is a pleasant month in Richland, Washington, with average temperature ranging between min 48°F (8.9°C) and max 73°F (22.8°C). In Richland, Washington, the average high-temperature slightly increases, from a comfortable 64.9°F (18.3°C) in April, to an agreeable 73°F (22.8°C). Weather in May »

The first month of the summer, June, is a moderately hot month in Richland, Washington, with average temperature varying between 54°F (12.2°C) and 80.1°F (26.7°C). In June, the average high-temperature marginally rises, from an agreeable 73°F (22.8°C) in May, to a warm 80.1°F (26.7°C). Weather in June »

July in Richland, Washington, is a tropical summer month, with average temperature ranging between max 88°F (31.1°C) and min 59°F (15°C). The warmest months are July and August, with an average high-temperature of 88°F (31.1°C). Weather in July »

August, the last month of the summer, in Richland, is also a hot month, with average temperature varying between 57.9°F (14.4°C) and 88°F (31.1°C). The warmest months are July and August, with an average high-temperature of 88°F (31.1°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Richland, Washington, with average temperature varying between 78.1°F (25.6°C) and 50°F (10°C). In Richland, the average high-temperature drops, from a hot 88°F (31.1°C) in August, to a warm 78.1°F (25.6°C). Weather in September »

October, the same as September, is another comfortable autumn month in Richland, Washington, with average temperature fluctuating between 39.9°F (4.4°C) and 64°F (17.8°C). In Richland, Washington, the average high-temperature drops, from a warm 78.1°F (25.6°C) in September, to a comfortable 64°F (17.8°C). Weather in October »

November, the last month of the autumn, in Richland, is another chilly month, with average temperature ranging between min 34°F (1.1°C) and max 48.9°F (9.4°C). In November, the average high-temperature plummets, from an enjoyable 64°F (17.8°C) in October, to a frosty 48.9°F (9.4°C). Weather in November »

The first month of the winter, December, is still a cold month in Richland, Washington, with average temperature varying between 28°F (-2.2°C) and 37.9°F (3.3°C). The coldest month is December, with an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 28°F (-2.2°C). Weather in December »

How much does it rain in Richland?

During the entire year, Richland aggregates up to 7.6" (194.3mm) of precipitation.

When are the longest days in Richland?

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

What are the warmest months in Richland?

July and August, with an average high-temperature of 88°F (31.1°C), are warmest months in Richland, Washington.

What is the driest month in Richland?

August is the month with the least rainfall in Richland, with 0.2" (4.1mm) of accumulated precipitation.

What is the coldest month in Richland?

December is the coldest month, with an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 28°F (-2.2°C).

What is the rainiest month in Richland?

December is the month with the most rainfall in Richland, with 1.1" (28.4mm) of accumulated precipitation.

What is the month with the shortest days in Richland?

With an average of 8.7h of daylight, December has the shortest days of the year in Richland.
Average rainfall - Richland, WA
Average daylight - Richland, WA

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