Union, WA Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Union for August is 63.6 degrees
The lowest monthly average temperature in Union for December is 37.8 degrees
The most monthly precipitation in Union occurs in November with 13.6 inches
The air quality index in Union is 50% better than the national average
The pollution index in Union is 5% worse than the national average

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Union Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	33°F	46°F	39°F	10.0"
February	33°F	50°F	41°F	6.7"
March	36°F	54°F	44°F	9.7"
April	37°F	60°F	47°F	4.7"
May	43°F	67°F	54°F	3.1"
June	48°F	72°F	58°F	1.6"
July	51°F	79°F	63°F	0.8"
August	51°F	80°F	64°F	1.1"
September	47°F	74°F	59°F	3.0"
October	42°F	61°F	50°F	7.4"
November	36°F	51°F	43°F	13.6"
December	32°F	45°F	38°F	11.5"

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Union air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Union	Washington	National
Air quality index	21	36	42
Pollution index	2,873,390	4,541,850	2,726,193

Union air quality

Measurement	Total
Days measured	361
Days with good air quality	339
Days with moderate air quality	22
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.050%
Carbon Tetrachloride	0.010%
Lead	0.010%
Mercury	0.010%

Average monthly Union temperature with heat index

Union monthly precipitation with daily maximum

Union monthly snow depth with daily maximum

Union monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Allyn, WA	2,504	18	64.0%
Belfair, WA	4,557	18	64.0%
Vaughn, WA	1,052	18	64.0%
Grapeview, WA	703	18	64.0%
Herron Island, WA	50	21	58.0%
Union, WA	327	21	58.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
King Salmon, AK	327	31	38.0%
Fulton, AL	327	36	28.0%
Mentone, AL	327	39	22.0%
Chauncey, GA	327	26	48.0%
Irwin, IA	327	40	20.0%
Union, WA	327	21	58.0%

Source: The Union, WA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.