TODAY MAR28
TEMPERATURE44
HUMIDITY51
PRESSURE102200
WIND COND.250 18.4
  • 6149Fri40%
  • 6441Sat80%50%
  • 5848Sun30%80%
  • 6347Mon80%90%
  • 5637Tue70%30%
daynightWeather update from Muncie, Delaware County-Johnson Field at
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Weather Quick Facts

  • The highest monthly average temperature in Portland for August is 74.4 degrees
  • The lowest monthly average temperature in Portland for February is 25.6 degrees
  • The most monthly precipitation in Portland occurs in August with 8.8 inches
  • The air quality index in Portland is 17% better than the national average
  • The pollution index in Portland is 44% better than the national average

Compare Portland, IN Weather

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      Portland 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
      January22°F37°F29°F8.1"
      February18°F34°F26°F4.1"
      March32°F52°F41°F5.7"
      April40°F64°F51°F7.1"
      May51°F75°F63°F2.9"
      June62°F84°F73°F4.0"
      July61°F84°F72°F4.9"
      August64°F85°F74°F8.8"
      September57°F81°F68°F4.3"
      October49°F68°F58°F5.4"
      November34°F53°F43°F6.2"
      December22°F36°F29°F5.0"

      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.
      IndexPortlandIndianaNational
      Air quality index355642
      Pollution index1,533,5702,719,4532,726,193

      Portland air quality information

      MeasurementTotal
      Days measured352
      Days with good air quality319
      Days with moderate air quality33
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Portland air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.002%
      Lead0.003%
      Mercury0.001%

      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

      CityPopulationAir Quality IndexNational Avg.
      Geneva, IN1,2273138.0%
      Pennville, IN8663530.0%
      Ridgeville, IN5543530.0%
      Bryant, IN2143530.0%
      Redkey, IN1,4933530.0%
      Portland, IN5,9723530.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Highland Lakes, AL5,973536.0%
      Minot AFB, ND5,9743432.0%
      Ocean City, FL5,9693138.0%
      Salton City, CA5,9755816.0%
      Northville, MI5,9684020.0%
      Portland, IN5,9723530.0%
      Source: The Portland, IN 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.