Steilacoom, WA Weather - Forecast & Monthly Averages

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TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Steilacoom for July is 65.3 degrees
The lowest monthly average temperature in Steilacoom for December is 38.2 degrees
The most monthly precipitation in Steilacoom occurs in November with 8.2 inches
The air quality index in Steilacoom is 29% better than the national average
The pollution index in Steilacoom is 146% worse than the national average

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Steilacoom 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	47°F	39°F	7.4"
February	33°F	51°F	41°F	4.9"
March	36°F	55°F	44°F	6.1"
April	38°F	60°F	48°F	4.0"
May	44°F	67°F	55°F	4.5"
June	49°F	72°F	60°F	3.0"
July	52°F	80°F	65°F	1.5"
August	52°F	80°F	65°F	3.4"
September	48°F	73°F	60°F	4.4"
October	42°F	62°F	51°F	6.3"
November	36°F	52°F	44°F	8.2"
December	32°F	46°F	38°F	6.9"

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Steilacoom 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	Steilacoom	Washington	National
Air quality index	30	36	42
Pollution index	6,704,330	4,541,850	2,726,193

Steilacoom air quality

Measurement	Total
Days measured	365
Days with good air quality	323
Days with moderate air quality	42
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.003%
Benzene	0.100%
Carbon Tetrachloride	0.004%
Lead	0.030%
Mercury	0.003%

Average monthly Steilacoom temperature with heat index

Steilacoom monthly precipitation with daily maximum

Steilacoom monthly snow depth with daily maximum

Steilacoom monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Dash Point, WA	1,045	18	64.0%
Stansberry Lake, WA	2,438	18	64.0%
Artondale, WA	14,469	18	64.0%
Browns Point, WA	989	18	64.0%
Allyn, WA	2,583	18	64.0%
Steilacoom, WA	6,528	30	40.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Huntington Woods, MI	6,528	56	12.0%
Belpre, OH	6,527	35	30.0%
Dillon, SC	6,529	30	40.0%
Islamorada, Village of Islands, FL	6,530	41	18.0%
Shannon, QC	6,530	n/a
Steilacoom, WA	6,528	30	40.0%

Source: The Steilacoom, 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.