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Key findings

  • The highest monthly average temperature in Portage for July is 75.8 degrees
  • The lowest monthly average temperature in Portage for January is 28.6 degrees
  • The most monthly precipitation in Portage occurs in July with 9.5 inches
  • The air quality index in Portage is 26% better than the national average
  • The pollution index in Portage is 2843% worse than the national average

Compare Portage, IN Weather

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      Portage 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°F35°F29°F3.1"
      February22°F36°F29°F1.8"
      March34°F49°F41°F8.5"
      April43°F62°F52°F4.3"
      May53°F72°F62°F7.9"
      June62°F80°F71°F3.6"
      July67°F83°F76°F9.5"
      August65°F82°F74°F6.3"
      September58°F76°F67°F7.6"
      October47°F65°F56°F8.0"
      November37°F52°F44°F5.7"
      December27°F39°F33°F2.7"

      Portage 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.
      IndexPortageIndianaNational
      Air quality index375650
      Pollution index80,238,7042,719,4532,726,193

      Portage air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality305
      Days with moderate air quality55
      Days w/ poor A.Q. for sensitive groups4
      Days with unhealthy air quality0

      Portage air quality information

      PollutantTotal
      Arsenic0.760%
      Benzene0.560%
      Carbon Tetrachloride0.280%
      Lead0.480%
      Mercury0.480%

      Average monthly Portage temperature with heat index

      Portage monthly precipitation with daily maximum

      Portage monthly snow depth with daily maximum

      Portage monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Wanatah, IN1,2313726.0%
      Chesterton, IN13,9123726.0%
      Lake Station, IN12,1993726.0%
      South Haven, IN5,0423726.0%
      Ogden Dunes, IN1,1383726.0%
      Portage, IN37,0543726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Elmont, NY37,057512.0%
      Braintree Town, MA37,0664314.0%
      Greenfield, WI37,0704412.0%
      Monrovia, CA37,0907244.0%
      Los Banos, CA37,012484.0%
      Portage, IN37,0543726.0%
      Source: The Portage, 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.