Hermiston, OR Weather - Forecast & Monthly Averages

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TEMPERATURE	77
HUMIDITY
PRESSURE	101659.39
WIND COND.	120 9.3

Weather Quick Facts

The highest monthly average temperature in Hermiston for July is 76.4 degrees
The lowest monthly average temperature in Hermiston for December is 32.5 degrees
The most monthly precipitation in Hermiston occurs in December with 1.2 inches
The air quality index in Hermiston is 10% better than the national average
The pollution index in Hermiston is 62% worse than the national average

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Hermiston 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	27°F	43°F	34°F	1.0"
February	28°F	50°F	38°F	0.7"
March	33°F	60°F	46°F	1.0"
April	37°F	67°F	52°F	0.8"
May	44°F	77°F	61°F	1.0"
June	52°F	84°F	68°F	0.8"
July	58°F	94°F	76°F	0.1"
August	56°F	92°F	74°F	0.2"
September	47°F	82°F	64°F	0.4"
October	39°F	67°F	52°F	1.0"
November	32°F	52°F	41°F	1.0"
December	25°F	41°F	32°F	1.2"

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Hermiston 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	Hermiston	Oregon	National
Air quality index	38	32	42
Pollution index	4,405,170	7,156,356	2,726,193

Hermiston air quality

Measurement	Total
Days measured	364
Days with good air quality	286
Days with moderate air quality	72
Days w/ poor A.Q. for sensitive groups	6
Days with unhealthy air quality

Air quality details

Pollutant	Total
Arsenic	0.002%
Benzene	0.130%
Carbon Tetrachloride	0.004%
Lead	0.010%
Mercury	0.002%

Average monthly Hermiston temperature with heat index

Hermiston monthly precipitation with daily maximum

Hermiston monthly snow depth with daily maximum

Hermiston monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Umatilla, OR	7,361	37	26.0%
Irrigon, OR	1,949	37	26.0%
Echo, OR	593	38	24.0%
Stanfield, OR	2,600	38	24.0%
Hermiston, OR	18,009	38	24.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Bostonia, CA	18,008	64	28.0%
Centralia, WA	18,008	20	60.0%
Parole, MD	18,012	46	8.0%
Marion, IL	18,022	43	14.0%
Redland, MD	18,022	47	6.0%
Hermiston, OR	18,009	38	24.0%

Source: The Hermiston, OR 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.