Marietta-Alderwood, WA Weather - Forecast & Monthly Averages

TEMPERATURE	46
HUMIDITY	89
PRESSURE	101760
WIND COND.	140 13

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Weather Quick Facts

The highest monthly average temperature in Marietta-Alderwood for July is 63.3 degrees
The lowest monthly average temperature in Marietta-Alderwood for December is 38.5 degrees
The most monthly precipitation in Marietta-Alderwood occurs in November with 5.2 inches
The air quality index in Marietta-Alderwood is 19% better than the national average
The pollution index in Marietta-Alderwood is 82% better than the national average

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Marietta-Alderwood 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	4.4"
February	35°F	50°F	41°F	3.0"
March	38°F	53°F	45°F	4.1"
April	41°F	58°F	49°F	2.9"
May	46°F	65°F	55°F	2.3"
June	51°F	69°F	59°F	1.6"
July	54°F	74°F	63°F	0.7"
August	54°F	75°F	63°F	0.9"
September	49°F	69°F	58°F	2.1"
October	43°F	60°F	51°F	4.0"
November	38°F	51°F	44°F	5.2"
December	33°F	45°F	38°F	4.2"

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Marietta-Alderwood 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	Marietta-Alderwood	Washington	National
Air quality index	34	36	42
Pollution index	480,925	4,541,850	2,726,193

Marietta-Alderwood air quality

Measurement	Total
Days measured	365
Days with good air quality	277
Days with moderate air quality	78
Days w/ poor A.Q. for sensitive groups	10
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.010%
Carbon Tetrachloride	0.001%
Lead	0.040%
Mercury	0.000%

Average monthly Marietta-Alderwood temperature with heat index

Marietta-Alderwood monthly precipitation with daily maximum

Marietta-Alderwood monthly snow depth with daily maximum

Marietta-Alderwood monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Ferndale, WA	14,591	34	32.0%
Custer, WA	298	34	32.0%
Geneva, WA	2,596	34	32.0%
Lynden, WA	14,700	34	32.0%
Acme, WA	123	34	32.0%
Marietta-Alderwood, WA	3,463	34	32.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Poteet, TX	3,462	49	2.0%
Riverton, IL	3,464	40	20.0%
Fairchild AFB, WA	3,464	43	14.0%
Union Springs, AL	3,465	52	4.0%
High Bridge, NJ	3,460	34	32.0%
Marietta-Alderwood, WA	3,463	34	32.0%

Source: The Marietta-Alderwood, 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.