TODAY OCT11
TEMPERATURE58
HUMIDITY
PRESSURE100680
WIND COND.290 13
  • 6042Sat
  • 5946Sun50%
  • 634490%80%
  • 5541Tue20%30%
  • 5439Wed30%20%
daynightWeather update from Bar Harbor, Hancock County-Bar Harbor Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Southwest Harbor for July is 66.8 degrees
  • The lowest monthly average temperature in Southwest Harbor for January is 23.9 degrees
  • The most monthly precipitation in Southwest Harbor occurs in October with 7.6 inches
  • The air quality index in Southwest Harbor is 14% better than the national average
  • The pollution index in Southwest Harbor is 19% worse than the national average

Compare Southwest Harbor, ME Weather

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      Southwest Harbor 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°F33°F24°F4.5"
      February16°F33°F24°F5.0"
      March23°F41°F32°F4.4"
      April34°F52°F43°F4.7"
      May44°F62°F52°F5.9"
      June52°F69°F60°F6.7"
      July59°F76°F67°F6.3"
      August57°F75°F66°F5.4"
      September51°F69°F60°F7.3"
      October42°F58°F50°F7.6"
      November32°F47°F40°F7.5"
      December22°F37°F29°F5.4"

      Southwest Harbor 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.
      IndexSouthwest HarborMaineNational
      Air quality index363342
      Pollution index3,235,1003,417,5212,726,193

      Southwest Harbor air quality

      MeasurementTotal
      Days measured213
      Days with good air quality204
      Days with moderate air quality9
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.030%
      Benzene0.030%
      Carbon Tetrachloride0.010%
      Lead0.020%
      Mercury0.010%

      Average monthly Southwest Harbor temperature with heat index

      Southwest Harbor monthly precipitation with daily maximum

      Southwest Harbor monthly snow depth with daily maximum

      Southwest Harbor monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Blue Hill, ME1,2163138.0%
      Winter Harbor, ME3373138.0%
      Bar Harbor, ME2,1633138.0%
      Southwest Harbor, ME6263628.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Morganza, LA6264510.0%
      Leawood, MO6263726.0%
      Polvadera, NM626536.0%
      Seven Valleys, PA6264118.0%
      Harrah, WA6263824.0%
      Southwest Harbor, ME6263628.0%
      Source: The Southwest Harbor, ME 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.