TODAY NOV04
TEMPERATURE58
HUMIDITY97
PRESSURE100812.79
WIND COND.190 18.5
  • 5841Tue90%70%
  • 5339Wed
  • 5440Thu
  • 5642Fri
  • 5443Sat
daynightWeather update from Ephraim-Gibraltar Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Sister Bay for July is 69.2 degrees
  • The lowest monthly average temperature in Sister Bay for January is 19 degrees
  • The most monthly precipitation in Sister Bay occurs in August with 5.6 inches
  • The air quality index in Sister Bay is 14% better than the national average
  • The pollution index in Sister Bay is 21% better than the national average

Compare Sister Bay, WI Weather

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      Sister Bay 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
      January12°F27°F19°F2.7"
      February12°F29°F20°F0.9"
      March22°F40°F31°F2.4"
      April33°F52°F42°F3.5"
      May44°F65°F54°F5.4"
      June54°F74°F64°F5.5"
      July59°F80°F69°F5.5"
      August58°F77°F67°F5.6"
      September51°F70°F60°F5.4"
      October40°F57°F49°F5.0"
      November30°F45°F37°F5.4"
      December17°F31°F24°F2.4"

      Sister Bay 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.
      IndexSister BayWisconsinNational
      Air quality index366942
      Pollution index2,162,1502,842,4182,726,193

      Sister Bay air quality

      MeasurementTotal
      Days measured365
      Days with good air quality311
      Days with moderate air quality54
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.002%
      Benzene0.030%
      Carbon Tetrachloride0.001%
      Lead0.001%
      Mercury0.002%

      Average monthly Sister Bay temperature with heat index

      Sister Bay monthly precipitation with daily maximum

      Sister Bay monthly snow depth with daily maximum

      Sister Bay monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Ephraim, WI2363628.0%
      Baileys Harbor, WI1873628.0%
      Egg Harbor, WI2503628.0%
      Ellison Bay, WI1483628.0%
      Sister Bay, WI8733628.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ola, AR8733824.0%
      Gadsden, AZ8734510.0%
      Light Oak, NC8733628.0%
      Santa Clara Pueblo, NM8734118.0%
      Round Hill Village, NV8731374.0%
      Sister Bay, WI8733628.0%
      Source: The Sister Bay, WI 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.