Gresham, OR Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Gresham for August is 68.9 degrees
The lowest monthly average temperature in Gresham for December is 39.8 degrees
The most monthly precipitation in Gresham occurs in November with 6.5 inches
The air quality index in Gresham is 10% better than the national average
The pollution index in Gresham is 789% worse than the national average

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Gresham 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	36°F	46°F	40°F	4.7"
February	38°F	51°F	44°F	3.2"
March	40°F	57°F	47°F	5.2"
April	42°F	63°F	51°F	3.6"
May	48°F	71°F	58°F	2.8"
June	53°F	76°F	63°F	2.1"
July	56°F	84°F	69°F	0.5"
August	56°F	85°F	69°F	0.4"
September	52°F	78°F	64°F	1.6"
October	46°F	65°F	55°F	4.5"
November	42°F	53°F	47°F	6.5"
December	35°F	45°F	40°F	5.1"

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Gresham 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	Gresham	Oregon	National
Air quality index	38	32	42
Pollution index	24,235,400	7,156,356	2,726,193

Gresham air quality information

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

Gresham air quality information

Pollutant	Total
Arsenic	0.020%
Benzene	0.250%
Carbon Tetrachloride	0.060%
Lead	0.160%
Mercury	0.090%

Average monthly Gresham temperature with heat index

Gresham monthly precipitation with daily maximum

Gresham monthly snow depth with daily maximum

Gresham monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Troutdale, OR	16,433	38	24.0%
Orchards, WA	26,289	38	24.0%
Lake Oswego, OR	39,476	38	24.0%
Oregon City, OR	37,057	38	24.0%
Stafford, OR	1,940	38	24.0%
Gresham, OR	110,456	38	24.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Lakeland, FL	110,335	36	28.0%
Miami Gardens, FL	110,767	41	18.0%
Everett, WA	110,840	45	10.0%
Richmond, CA	110,051	40	20.0%
West Palm Beach, FL	111,006	36	28.0%
Gresham, OR	110,456	38	24.0%

Source: The Gresham, 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.