TODAY JUL18
TEMPERATURE90
HUMIDITY30
PRESSURE30
WIND COND.300 6.9
  • 8257Wed
  • 7853Thu
  • 7852Fri
  • 8155Sat
  • 8659Sun
daynightWeather update from Portland, Portland International Airport at

Hillsdale 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
January19°F66°F41°F5.1"
February22°F65°F43°F2.0"
March28°F75°F47°F3.5"
April31°F83°F51°F2.6"
May37°F95°F59°F2.9"
June46°F102°F63°F1.4"
July51°F106°F70°F0.4"
August48°F102°F68°F0.6"
September41°F95°F64°F1.1"
October30°F78°F54°F2.6"
November27°F67°F47°F6.1"
December12°F63°F39°F5.2"

Did you know?

  • The highest monthly average temperature in Hillsdale for July is 70 degrees.
  • The lowest monthly average temperature in Hillsdale for December is 39 degrees.
  • The most monthly precipitation in Hillsdale occurs in November with 6.1 inches.
  • The air quality index in Hillsdale is 23% better than the national average.
  • The pollution index in Hillsdale is 35% better than the national average.

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Compare Portland, OR Weather To Other Cities

Hillsdale 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.
IndexHillsdalePortlandOregon
Air quality index383832
Pollution index3,247,5801,899,4105,374,527

Hillsdale air quality information

MeasurementTotal
Days measured365
Days with good air quality241
Days with moderate air quality108
Days w/ poor A.Q. for sensitive groups12
Days with unhealthy air quality4

Hillsdale air quality information

PollutantTotal
Arsenic0.003%
Benzene0.020%
Carbon Tetrachloride0.010%
Lead0.010%
Mercury0.002%

Average monthly Hillsdale temperature with heat index

Hillsdale monthly precipitation with daily maximum

Hillsdale monthly snow depth with daily maximum

Hillsdale monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Beavercreek, OR4,0343824%
Cedar Hills, OR8,1353824%
Fairview, OR9,2153824%
Happy Valley, OR17,4743824%
King City, OR3,5993824%
Portland, OR620,5893824%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Baltimore, MD621,000468%
Oklahoma City, OK620,015476%
Las Vegas, NV613,295548%
Louisville, KY611,5735510%
Milwaukee, WI598,6724510%
Portland, OR620,5893824%
Source: The Hillsdale, Portland, 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.