Maple Valley, WA Weather - Forecast & Monthly Averages

TEMPERATURE	43
HUMIDITY	74
PRESSURE
WIND COND.	143 12.9

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Weather Quick Facts

The highest monthly average temperature in Maple Valley for August is 67.5 degrees
The lowest monthly average temperature in Maple Valley for December is 40.6 degrees
The most monthly precipitation in Maple Valley occurs in November with 5.7 inches
The air quality index in Maple Valley is 7% worse than the national average
The pollution index in Maple Valley is 549% worse than the national average

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Maple Valley 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	36°F	48°F	41°F	4.7"
February	37°F	51°F	44°F	3.2"
March	40°F	55°F	46°F	4.5"
April	43°F	61°F	50°F	2.9"
May	48°F	68°F	57°F	2.1"
June	53°F	73°F	62°F	1.6"
July	58°F	80°F	67°F	0.5"
August	58°F	80°F	67°F	0.9"
September	53°F	73°F	62°F	1.8"
October	47°F	62°F	53°F	3.9"
November	40°F	53°F	46°F	5.7"
December	36°F	47°F	41°F	4.5"

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Maple Valley 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	Maple Valley	Washington	National
Air quality index	45	36	42
Pollution index	17,693,800	4,541,850	2,726,193

Maple Valley air quality

Measurement	Total
Days measured	365
Days with good air quality	236
Days with moderate air quality	127
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.300%
Carbon Tetrachloride	0.050%
Lead	0.110%
Mercury	0.020%

Average monthly Maple Valley temperature with heat index

Maple Valley monthly precipitation with daily maximum

Maple Valley monthly snow depth with daily maximum

Maple Valley monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Puyallup, WA	41,666	30	40.0%
Auburn, WA	80,914	45	10.0%
Kent, WA	130,038	45	10.0%
Covington, WA	21,131	45	10.0%
Issaquah, WA	38,707	45	10.0%
Maple Valley, WA	26,739	45	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Lemon Grove, CA	26,739	64	28.0%
Sanger, CA	26,744	60	20.0%
Twentynine Palms, CA	26,748	89	78.0%
Xenia, OH	26,751	47	6.0%
Chaska, MN	26,753	46	8.0%
Maple Valley, WA	26,739	45	10.0%

Source: The Maple Valley, 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.