TODAY NOV21
TEMPERATURE37
HUMIDITY93
PRESSURE
WIND COND.160 20.5
  • 423790%
  • 4733Fri50%
  • 4329Sat30%
  • 4231Sun
  • 4328Mon
daynightWeather update from Mackinac Island Airport at
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Weather Quick Facts

  • The highest monthly average temperature in St. Ignace for July is 66.5 degrees
  • The lowest monthly average temperature in St. Ignace for February is 20.4 degrees
  • The most monthly precipitation in St. Ignace occurs in July with 5.8 inches
  • The air quality index in St. Ignace is 24% better than the national average
  • The pollution index in St. Ignace is 19% better than the national average

Compare St. Ignace, MI Weather

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      St. Ignace 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
      January16°F28°F22°F2.0"
      February14°F27°F20°F0.7"
      March22°F37°F29°F3.3"
      April33°F48°F39°F3.7"
      May42°F61°F51°F3.9"
      June52°F69°F60°F5.3"
      July59°F75°F66°F5.8"
      August59°F74°F66°F4.5"
      September53°F68°F60°F4.5"
      October43°F56°F49°F5.0"
      November33°F44°F38°F3.6"
      December22°F32°F27°F3.6"

      St. Ignace 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.
      IndexSt. IgnaceMichiganNational
      Air quality index326942
      Pollution index2,221,0504,161,6062,726,193

      St. Ignace air quality

      MeasurementTotal
      Days measured58
      Days with good air quality53
      Days with moderate air quality5
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.040%
      Benzene0.020%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.003%

      Average monthly St. Ignace temperature with heat index

      St. Ignace monthly precipitation with daily maximum

      St. Ignace monthly snow depth with daily maximum

      St. Ignace monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Mackinac Island, MI9923236.0%
      Mackinaw City, MI7043236.0%
      Carp Lake, MI5253236.0%
      St. Ignace, MI2,1333236.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ferdinand, IN2,133688.0%
      East Jordan, MI2,1333628.0%
      Kahoka, MO2,1332942.0%
      Caledonia, NY2,1333726.0%
      Chinchilla, PA2,1333824.0%
      St. Ignace, MI2,1333236.0%
      Source: The St. Ignace, 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.