Richland, Washington 

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Climate in Richland, Washington

Richland, WA is a beautiful city with an ideal climate for many activities. The summers are warm and dry with temperatures reaching into the 80s and low 90s during the day, while evenings are pleasantly cooler. Winter temperatures can dip to the 20s during the night but generally stay in the 40s and 50s during the day. Spring and fall provide mild temps that make outdoor activities comfortable and enjoyable. Richland is also known for its windy days, which keep temperatures pleasant throughout all four seasons.

Richland, Washington gets 8 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Richland averages 4 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 196 sunny days per year in Richland. The US average is 205 sunny days.

Richland gets some kind of precipitation, on average, 83 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 90 degrees
Winter Low: the January low is 29
Rain: averages 8 inches of rain a year
Snow: averages 4 inches of snow a year


The annual BestPlaces Comfort Index for Richland is 7.5 (10=best), which means it is one of the most pleasant places in Washington.

8.9 / 5.5

Summer   /   Winter
June, September and May are the most pleasant months in Richland, while December and January are the least comfortable months.

Climate Averages
  Richland, WashingtonUnited States
  8.1 in.38.1 in.
  3.6 in.27.8 in.
  82.8 days106.2 days
  196 days205 days
  384 ft.2443 ft.


Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Richland with an average high temperature of 89.9°, which ranks it as one of the hottest places in Washington. In Richland, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Richland are September, June and May.

In Richland, there are 39.9 days annually when the high temperature is over 90°, which is one of the hottest places in Washington.

December has the coldest nighttime temperatures for Richland with an average of 27.5°. This is colder than most places in Washington.

In Richland, there are 86.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In Richland, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Washington.

Humidity is low in Richland, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.

December is the wettest month in Richland with 1.2 inches of rain, and the driest month is August with 0.2 inches. The wettest season is Spring with 38% of yearly precipitation and 14% occurs in Autumn, which is the driest season. The annual rainfall of 8.1 inches in Richland means that it is one of the driest places in Washington.

January is the rainiest month in Richland with 11.5 days of rain, and August is the driest month with only 2.3 rainy days. There are 82.8 rainy days annually in Richland, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 38% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 3.6 inches in Richland means that it is less snowy than most places in Washington. December is the snowiest month in Richland with 1.4 inches of snow, and 3 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Richland    13 Reviews
    Richland a great place to Retire - 7/5/2022
    Richland has grown a lot and is getting lots of retirees, it has great weather, great food not all chain restaurants, but has them also. the people are friendly, lots... Read More

    Start Your Review of Richland

    Smoky air, hot, ugly, bad food - 9/8/2021
    I have lived here a few years and it’s the worst place I’ve ever been. The “ nice weather” people refer to is 100 degree hot can’t even stand outside at 9am without... Read More
    K | Pasco, WA | Reply | 1 Reply

    Amazing and Wonderful - 4/23/2020
    I've lived here all my life, and compared to other places I've visited, this is an amazing place. The summers are very hot and dry with lots of fires and the winter is... Read More

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