Fort Lewis, WA Weather - Forecast & Monthly Averages

TEMPERATURE	47
HUMIDITY	76
PRESSURE	101420
WIND COND.	130 7.6

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Weather Quick Facts

The highest monthly average temperature in Fort Lewis for July is 65.6 degrees
The lowest monthly average temperature in Fort Lewis for December is 38.7 degrees
The most monthly precipitation in Fort Lewis occurs in December with 9.5 inches
The air quality index in Fort Lewis is 29% better than the national average
The pollution index in Fort Lewis is 549% worse than the national average

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Fort Lewis 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	32°F	47°F	39°F	6.9"
February	32°F	52°F	41°F	3.7"
March	39°F	58°F	47°F	6.2"
April	41°F	60°F	49°F	4.1"
May	46°F	68°F	56°F	2.9"
June	50°F	69°F	59°F	2.5"
July	54°F	78°F	66°F	2.9"
August	53°F	78°F	64°F	4.9"
September	47°F	70°F	58°F	4.4"
October	44°F	61°F	51°F	4.5"
November	36°F	50°F	42°F	6.6"
December	34°F	45°F	39°F	9.5"

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Fort Lewis 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	Fort Lewis	Washington	National
Air quality index	30	36	42
Pollution index	17,693,800	4,541,850	2,726,193

Fort Lewis air quality

Measurement	Total
Days measured	365
Days with good air quality	323
Days with moderate air quality	42
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

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

Average monthly Fort Lewis temperature with heat index

Fort Lewis monthly precipitation with daily maximum

Fort Lewis monthly snow depth with daily maximum

Fort Lewis monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Artondale, WA	14,024	18	64.0%
Wollochet, WA	7,193	18	64.0%
Browns Point, WA	961	18	64.0%
Gig Harbor, WA	10,280	18	64.0%
Ruston, WA	1,329	18	64.0%
Fort Lewis, WA	13,045	30	40.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Jupiter Farms, FL	13,045	36	28.0%
Trenton, OH	13,046	54	8.0%
Steamboat Springs, CO	13,048	47	6.0%
Annapolis Neck, MD	13,049	46	8.0%
Woodinville, WA	13,038	45	10.0%
Fort Lewis, WA	13,045	30	40.0%

Source: The Fort Lewis, 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.