Lewisville, WA Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Lewisville for August is 69.4 degrees
The lowest monthly average temperature in Lewisville for December is 40.1 degrees
The most monthly precipitation in Lewisville occurs in November with 6.2 inches
The air quality index in Lewisville is 10% better than the national average
The pollution index in Lewisville is 30% better than the national average

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Lewisville 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	34°F	48°F	40°F	5.4"
February	36°F	52°F	43°F	3.7"
March	39°F	57°F	47°F	4.9"
April	42°F	63°F	52°F	2.9"
May	48°F	71°F	58°F	2.6"
June	53°F	76°F	63°F	1.7"
July	57°F	84°F	69°F	0.5"
August	57°F	84°F	69°F	0.4"
September	52°F	79°F	64°F	1.5"
October	46°F	66°F	55°F	3.7"
November	40°F	54°F	47°F	6.2"
December	34°F	47°F	40°F	6.2"

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Lewisville 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	Lewisville	Washington	National
Air quality index	38	36	42
Pollution index	1,899,410	4,541,850	2,726,193

Lewisville air quality

Measurement	Total
Days measured	365
Days with good air quality	285
Days with moderate air quality	77
Days w/ poor A.Q. for sensitive groups	3
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.003%
Benzene	0.020%
Carbon Tetrachloride	0.010%
Lead	0.010%
Mercury	0.002%

Average monthly Lewisville temperature with heat index

Lewisville monthly precipitation with daily maximum

Lewisville monthly snow depth with daily maximum

Lewisville monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Columbia City, OR	1,770	18	64.0%
St. Helens, OR	13,779	18	64.0%
Woodland, WA	6,223	18	64.0%
Brush Prairie, WA	2,721	38	24.0%
Meadow Glade, WA	2,774	38	24.0%
Lewisville, WA	2,166	38	24.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Rockwell City, IA	2,166	37	26.0%
Oakwood, PA	2,166	31	38.0%
Fort Qu'Appelle, SK	2,166	n/a
Carnation, WA	2,165	45	10.0%
Saint-Gédéon-de-Beauce, QC	2,165	n/a
Lewisville, WA	2,166	38	24.0%

Source: The Lewisville, 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.