Walnut Grove, WA Weather - Forecast & Monthly Averages

TEMPERATURE	42
HUMIDITY	92
PRESSURE	101150
WIND COND.

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Weather Quick Facts

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

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

Walnut Grove 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 Walnut Grove temperature with heat index

Walnut Grove monthly precipitation with daily maximum

Walnut Grove monthly snow depth with daily maximum

Walnut Grove monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
St. Helens, OR	13,779	18	64.0%
Maywood Park, OR	1,224	38	24.0%
Brush Prairie, WA	2,721	38	24.0%
Lewisville, WA	2,166	38	24.0%
Washougal, WA	15,927	38	24.0%
Walnut Grove, WA	9,324	38	24.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Northwest Harborcreek, PA	9,321	36	28.0%
Hondo, TX	9,321	49	2.0%
Sellersburg, IN	9,320	49	2.0%
Brentwood, PA	9,319	56	12.0%
Bohemia, NY	9,329	43	14.0%
Walnut Grove, WA	9,324	38	24.0%

Source: The Walnut Grove, 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.