Union, WA Climate

Union, WA has a moderate climate with mild winters and warm summers. The average low temperature in the winter is around 35 degrees Fahrenheit while the average high temperature in the summer is around 80 degrees Fahrenheit. The area receives an average of 38 inches of rain per year, making it ideal for outdoor activities throughout the year. With an elevation of 1,505 feet, Union experiences cooler temperatures than many other parts of Washington state.

Union, Washington gets 70 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 136 sunny days per year in Union. The US average is 205 sunny days.

Union gets some kind of precipitation, on average, 161 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 76 degrees
Winter Low: the January low is 35
Rain: averages 70 inches of rain a year
Snow: averages 4 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Union is 7.1 (10=best), which means it is about average compared to other places in Washington.

9.1 Summer - 5 Winter

July, August and September are the most pleasant months in Union, while December and January are the least comfortable months.

Climate	Union, Washington	United States
	Unlock	38.1 in.
	3.6 in.	Unlock
	Unlock	106.2 days
	136 days	Unlock
	75.6°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	148 ft.	Unlock

Climate

YOU SHOULD KNOW

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.

August is the hottest month for Union with an average high temperature of 76.4°, which ranks it as cooler than most places in Washington. In Union, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Union are August, July and September.

In Union, there are 3.0 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

December has the coldest nighttime temperatures for Union with an average of 33.7°. This is warmer than most places in Washington.

In Union, there are 50.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In Union, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

Humidity in Union is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are August, July and September.

November is the wettest month in Union with 12.3 inches of rain, and the driest month is July with 0.9 inches. The wettest season is Spring with 44% of yearly precipitation and 6% occurs in Autumn, which is the driest season. The annual rainfall of 70.1 inches in Union means that it is wetter than most places in Washington.

November is the rainiest month in Union with 20.4 days of rain, and July is the driest month with only 4.5 rainy days. There are 160.8 rainy days annually in Union, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 34% 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 Union means that it is less snowy than most places in Washington. December is the snowiest month in Union with 1.1 inches of snow, and 3 months of the year have significant snowfall.