St. John, WA Weather - Forecast & Monthly Averages

TEMPERATURE	47
HUMIDITY	94
PRESSURE
WIND COND.	112 4.8

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Weather Quick Facts

The highest monthly average temperature in St. John for July is 69.9 degrees
The lowest monthly average temperature in St. John for December is 30.2 degrees
The most monthly precipitation in St. John occurs in December with 2.9 inches
The air quality index in St. John is 57% better than the national average
The pollution index in St. John is 55% better than the national average

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St. John 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	24°F	37°F	30°F	2.8"
February	28°F	46°F	35°F	2.1"
March	34°F	54°F	43°F	2.0"
April	36°F	59°F	47°F	1.8"
May	43°F	69°F	55°F	2.0"
June	46°F	73°F	59°F	2.0"
July	51°F	88°F	70°F	0.9"
August	48°F	86°F	67°F	1.2"
September	41°F	73°F	56°F	1.4"
October	39°F	61°F	49°F	2.4"
November	31°F	45°F	37°F	2.7"
December	24°F	35°F	30°F	2.9"

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St. John 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	St. John	Washington	National
Air quality index	18	36	42
Pollution index	1,232,200	4,541,850	2,726,193

St. John air quality

Measurement	Total
Days measured	365
Days with good air quality	354
Days with moderate air quality	11
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.020%
Carbon Tetrachloride	0.002%
Lead	0.020%
Mercury	0.000%

Average monthly St. John temperature with heat index

St. John monthly precipitation with daily maximum

St. John monthly snow depth with daily maximum

St. John monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Endicott, WA	337	18	64.0%
Steptoe, WA	135	18	64.0%
Colfax, WA	2,879	18	64.0%
Rosalia, WA	648	43	14.0%
Lamont, WA	71	43	14.0%
St. John, WA	612	18	64.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Silverton, CO	612	44	12.0%
Wilsonville, IL	612	54	8.0%
Glen Elder, KS	612	32	36.0%
Leeton, MO	612	47	6.0%
Carlton, MT	612	40	20.0%
St. John, WA	612	18	64.0%

Source: The St. John, 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.