TODAY OCT24
TEMPERATURE66°F
HUMIDITY73%
PRESSURE30.00 inHg
WIND COND.100° 5.8 mph
  • 8155Sat70% | 80%
  • 7651Sun
  • 7652Columbus Day
  • 7048Tue
  • 6647Wed
daynightWeather update from Ionia County Airport, on 6 Oct 15:13 pm EDT

Portland 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
January-10°F62°F25°F2.9"
February-8°F66°F24°F1.6"
March4°F77°F35°F2.2"
April18°F82°F48°F3.1"
May29°F90°F58°F3.2"
June41°F93°F69°F3.9"
July46°F97°F71°F3.4"
August43°F94°F70°F3.2"
September34°F91°F63°F3.5"
October25°F86°F50°F2.5"
November12°F72°F40°F2.1"
December3°F61°F28°F2.3"

Did you know?

  • The highest monthly average temperature in Portland for July is 71 degrees.
  • The lowest monthly average temperature in Portland for February is 24 degrees.
  • The most monthly precipitation in Portland occurs in June with 3.9 inches.
  • The air quality index in Portland is 31% better than the national average.
  • The pollution index in Portland is 72% better than the national average.

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Compare Portland, MI Weather To Other Cities

Portland 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.
IndexPortlandMichiganNational
Air quality index346850
Pollution index1,401,4504,157,8675,100,859

Portland air quality information

MeasurementTotal
Days measured363
Days with good air quality325
Days with moderate air quality38
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Portland air quality information

PollutantTotal
Arsenic0.001%
Benzene0.020%
Carbon Tetrachloride0.002%
Lead0.005%
Mercury0.000%

Average monthly Portland temperature with heat index

Portland monthly precipitation with daily maximum

Portland monthly snow depth with daily maximum

Portland monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Muir, MI5823432%
Wacousta, MI1,3473432%
Mulliken, MI5883432%
Fowler, MI1,2523432%
Westphalia, MI8383432%
Portland, MI3,8993432%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Shrewsbury, NJ3,899536%
Swanton, OH3,8993628%
De Motte, IN3,8993138%
Lake Providence, LA3,8995612%
Sidney, NY3,9003432%
Portland, MI3,8993432%
Source: The Portland, MI 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.