TODAY OCT22
TEMPERATURE59
HUMIDITY71
PRESSURE
WIND COND.48 2.2
  • 6246Tue40%40%
  • 6245Wed
  • 5949Thu80%
  • 6447Fri
  • 6649Sat
daynightWeather update from CORVALLIS at
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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.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January34°F49°F41°F5.6"
February35°F53°F43°F4.1"
March37°F58°F47°F5.4"
April39°F63°F50°F2.9"
May45°F71°F57°F2.3"
June50°F76°F62°F1.3"
July54°F86°F69°F0.3"
August54°F86°F69°F0.4"
September50°F80°F63°F1.8"
October43°F66°F54°F4.1"
November38°F55°F46°F6.7"
December33°F48°F40°F7.4"

Did you know?

  • The highest monthly average temperature in Jefferson for August is 69 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 53% better than the national average.
  • The pollution index in Jefferson is 37% better than the national average.

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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.
IndexJeffersonOregonNational
Air quality index233250
Pollution index3,182,1805,374,5275,066,862

Jefferson air quality information

MeasurementTotal
Days measured365
Days with good air quality291
Days with moderate air quality69
Days w/ poor A.Q. for sensitive groups5
Days with unhealthy air quality

Jefferson air quality information

PollutantTotal
Arsenic0.010%
Benzene0.040%
Carbon Tetrachloride0.030%
Lead0.190%
Mercury0.110%

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, StatePopulationAir Quality IndexNational Avg.
Corvallis, OR55,7661766%
Albany, OR51,9192354%
Lebanon, OR16,1622354%
West Scio, OR1392354%
Marion, OR2632354%
Jefferson, OR3,2072354%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Olney, TX3,2072648%
Raoul, GA3,2054216%
Amesti, CA3,2053628%
K. I. Sawyer, MI3,209884%
Rockwood, MI3,209688%
Jefferson, OR3,2072354%
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.