West Lake Sammamish, Bellevue, WA Weather - Forecast & Monthly Averages

TEMPERATURE	63
HUMIDITY	43
PRESSURE	101420
WIND COND.	360 9.4

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Weather Quick Facts

The highest monthly average temperature in West Lake Sammamish for August is 67.5 degrees
The lowest monthly average temperature in West Lake Sammamish for December is 41.4 degrees
The most monthly precipitation in West Lake Sammamish occurs in November with 6.6 inches
The air quality index in West Lake Sammamish is 7% worse than the national average
The pollution index in West Lake Sammamish is 60% better than the national average

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West Lake Sammamish 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	49°F	42°F	5.1"
February	37°F	52°F	44°F	3.8"
March	40°F	55°F	47°F	4.9"
April	43°F	61°F	51°F	3.1"
May	49°F	68°F	57°F	2.2"
June	54°F	72°F	62°F	1.5"
July	58°F	79°F	67°F	0.4"
August	58°F	79°F	68°F	0.6"
September	54°F	73°F	62°F	1.6"
October	47°F	62°F	54°F	3.9"
November	40°F	53°F	47°F	6.6"
December	36°F	48°F	41°F	6.1"

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West Lake Sammamish 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	West Lake Sammamish	Bellevue	Washington
Air quality index	45	45	36
Pollution index	1,081,430	1,081,430	4,541,850

West Lake Sammamish air quality information

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

West Lake Sammamish air quality information

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

Average monthly West Lake Sammamish temperature with heat index

West Lake Sammamish monthly precipitation with daily maximum

West Lake Sammamish monthly snow depth with daily maximum

West Lake Sammamish monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Fairwood CDP (Spokane County), WA	8,055	45	10.0%
Duvall, WA	7,979	45	10.0%
Issaquah, WA	38,707	45	10.0%
Boulevard Park, WA	4,197	45	10.0%
Mountlake Terrace, WA	21,328	45	10.0%
Bellevue, WA	146,145	45	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Kelowna, BC	145,612	n/a
Savannah, GA	145,492	39	22.0%
Paterson, NJ	145,484	51	2.0%
Saguenay, QC	145,134	n/a
Bridgeport, CT	145,014	43	14.0%
Bellevue, WA	146,145	45	10.0%

Source: The West Lake Sammamish, Bellevue, 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.