TODAY AUG17
TEMPERATURE68
HUMIDITY37
PRESSURE29.94
WIND COND.283 2
  • 9058Sat
  • 9360Sun
  • 9259Mon
  • 9359Tue
  • 9156Wed
daynightWeather update from DW2631 Mount Vernon at

Mount Vernon Average Weather

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
January28°F43°F34°F1.8"
February30°F47°F38°F1.0"
March34°F54°F42°F1.4"
April36°F59°F46°F1.7"
May42°F68°F54°F2.7"
June49°F77°F62°F2.4"
July56°F90°F73°F2.0"
August55°F88°F71°F2.1"
September48°F80°F63°F1.7"
October41°F64°F51°F2.1"
November33°F50°F40°F1.4"
December26°F40°F32°F1.2"

Did you know?

  • The highest monthly average temperature in Mount Vernon for July is 73 degrees.
  • The lowest monthly average temperature in Mount Vernon for December is 32 degrees.
  • The most monthly precipitation in Mount Vernon occurs in May with 2.7 inches.
  • The air quality index in Mount Vernon is 33% better than the national average.
  • The pollution index in Mount Vernon is 31% better than the national average.

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Compare Mount Vernon, OR Weather To Other Cities

Mount Vernon 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.
IndexMount VernonOregonNational
Air quality index333250
Pollution index3,459,5405,374,5275,066,862

Mount Vernon air quality information

MeasurementTotal
Days measured365
Days with good air quality275
Days with moderate air quality85
Days w/ poor A.Q. for sensitive groups5
Days with unhealthy air quality

Mount Vernon air quality information

PollutantTotal
Arsenic0.003%
Benzene0.070%
Carbon Tetrachloride0.010%
Lead0.004%
Mercury0.002%

Average monthly Mount Vernon temperature with heat index

Mount Vernon monthly precipitation with daily maximum

Mount Vernon monthly snow depth with daily maximum

Mount Vernon monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Canyon City, OR8053334%
John Day, OR1,7213334%
Mount Vernon, OR6013334%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Pleasant Hill, TX6014412%
Eva, AL6013726%
Valier, IL6013922%
Chatham, LA6015612%
Macclesfield, NC6013432%
Mount Vernon, OR6013334%
Source: The Mount Vernon, 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.