Jefferson, OR Weather - Forecast & Monthly Averages

TEMPERATURE	42
HUMIDITY	99
PRESSURE
WIND COND.	129 1.4

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Weather Quick Facts

The highest monthly average temperature in Jefferson for August is 68.9 degrees
The lowest monthly average temperature in Jefferson for December is 40 degrees
The most monthly precipitation in Jefferson occurs in December with 7.4 inches
The air quality index in Jefferson is 33% better than the national average
The pollution index in Jefferson is 17% worse than the national average

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Jefferson 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	49°F	41°F	5.6"
February	35°F	53°F	43°F	4.1"
March	37°F	58°F	47°F	5.4"
April	39°F	63°F	50°F	2.9"
May	45°F	71°F	57°F	2.3"
June	50°F	76°F	62°F	1.3"
July	54°F	86°F	69°F	0.3"
August	54°F	86°F	69°F	0.4"
September	50°F	80°F	63°F	1.8"
October	43°F	66°F	54°F	4.1"
November	38°F	55°F	46°F	6.7"
December	33°F	48°F	40°F	7.4"

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Jefferson 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	Jefferson	Oregon	National
Air quality index	28	32	42
Pollution index	3,182,180	7,156,356	2,726,193

Jefferson air quality

Measurement	Total
Days measured	365
Days with good air quality	280
Days with moderate air quality	83
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.040%
Carbon Tetrachloride	0.030%
Lead	0.190%
Mercury	0.110%

Average monthly Jefferson temperature with heat index

Jefferson monthly precipitation with daily maximum

Jefferson monthly snow depth with daily maximum

Jefferson monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Corvallis, OR	58,612	17	66.0%
Marion, OR	416	28	44.0%
Adair Village, OR	1,107	28	44.0%
Millersburg, OR	2,234	28	44.0%
Crabtree, OR	443	28	44.0%
Jefferson, OR	3,348	28	44.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Hoopa, CA	3,348	27	46.0%
Flagler Estates, FL	3,348	17	66.0%
Grande-Rivière, QC	3,348	n/a
Perry, NY	3,347	37	26.0%
Sharpsburg, PA	3,347	56	12.0%
Jefferson, OR	3,348	28	44.0%

Source: The Jefferson, 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.