Mount Vernon, WA Weather - Forecast & Monthly Averages

TEMPERATURE	41
HUMIDITY	87
PRESSURE	101220
WIND COND.	70 7.6

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Weather Quick Facts

The highest monthly average temperature in Mount Vernon for August is 60.9 degrees
The lowest monthly average temperature in Mount Vernon for December is 38.8 degrees
The most monthly precipitation in Mount Vernon occurs in October with 2.9 inches
The air quality index in Mount Vernon is 43% better than the national average
The pollution index in Mount Vernon is 479% worse than the national average

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Mount Vernon 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	35°F	45°F	40°F	1.2"
February	37°F	48°F	41°F	2.3"
March	40°F	51°F	45°F	2.5"
April	42°F	56°F	48°F	0.6"
May	46°F	61°F	53°F	1.2"
June	50°F	66°F	57°F	0.9"
July	52°F	71°F	60°F	0.0"
August	52°F	71°F	61°F	0.0"
September	50°F	66°F	57°F	0.5"
October	45°F	57°F	51°F	2.9"
November	40°F	50°F	44°F	2.4"
December	35°F	44°F	39°F	1.4"

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Mount Vernon 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	Mount Vernon	Washington	National
Air quality index	24	36	42
Pollution index	15,778,900	4,541,850	2,726,193

Mount Vernon air quality

Measurement	Total
Days measured	365
Days with good air quality	361
Days with moderate air quality	4
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.270%
Carbon Tetrachloride	0.040%
Lead	0.160%
Mercury	0.003%

Average monthly Mount Vernon temperature with heat index

Mount Vernon monthly precipitation with daily maximum

Mount Vernon monthly snow depth with daily maximum

Mount Vernon monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Arlington Heights, WA	2,463	24	52.0%
Anacortes, WA	17,231	24	52.0%
Big Lake, WA	2,251	24	52.0%
Sedro-Woolley, WA	11,919	24	52.0%
Edison, WA	264	24	52.0%
Mount Vernon, WA	35,502	24	52.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
West Hollywood, CA	35,506	72	44.0%
Inver Grove Heights, MN	35,492	46	8.0%
Oildale, CA	35,520	67	34.0%
Wildwood, MO	35,476	54	8.0%
Oswego, IL	35,470	0	100.0%
Mount Vernon, WA	35,502	24	52.0%

Source: The Mount Vernon, 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.