Lake Oswego, OR Weather - Forecast & Monthly Averages

TEMPERATURE	69
HUMIDITY	27
PRESSURE
WIND COND.	22 11.1

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Weather Quick Facts

The highest monthly average temperature in Lake Oswego for July is 69 degrees
The lowest monthly average temperature in Lake Oswego for January is 39.8 degrees
The most monthly precipitation in Lake Oswego occurs in December with 10.1 inches
The air quality index in Lake Oswego is 10% better than the national average
The pollution index in Lake Oswego is 323% worse than the national average

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Lake Oswego 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	4.1"
February	35°F	53°F	43°F	3.9"
March	40°F	61°F	49°F	4.7"
April	42°F	62°F	51°F	3.1"
May	48°F	70°F	58°F	4.2"
June	51°F	73°F	60°F	2.3"
July	56°F	84°F	69°F	2.0"
August	55°F	85°F	68°F	4.3"
September	49°F	76°F	61°F	4.5"
October	46°F	62°F	53°F	5.6"
November	36°F	53°F	43°F	5.8"
December	35°F	47°F	40°F	10.1"

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Lake Oswego 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	Lake Oswego	Oregon	National
Air quality index	38	32	42
Pollution index	11,541,100	7,156,356	2,726,193

Lake Oswego 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

Lake Oswego air quality information

Pollutant	Total
Arsenic	0.010%
Benzene	0.140%
Carbon Tetrachloride	0.020%
Lead	0.020%
Mercury	0.010%

Average monthly Lake Oswego temperature with heat index

Lake Oswego monthly precipitation with daily maximum

Lake Oswego monthly snow depth with daily maximum

Lake Oswego monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Donald, OR	1,465	32	36.0%
Dundee, OR	3,296	32	36.0%
St. Paul, OR	396	32	36.0%
Sherwood, OR	19,745	38	24.0%
Wilsonville, OR	24,413	38	24.0%
Lake Oswego, OR	39,476	38	24.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Carol Stream, IL	39,447	55	10.0%
Los Banos, CA	39,443	48	4.0%
Plant City, FL	39,437	36	28.0%
Columbia, TN	39,515	31	38.0%
Meadow Woods, FL	39,424	39	22.0%
Lake Oswego, OR	39,476	38	24.0%

Source: The Lake Oswego, 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.