TODAY DEC22
TEMPERATURE13
HUMIDITY49
PRESSURE103220
WIND COND.330 14.8
  • 2515Mon20%
  • 3315Tue60%
  • 3115
  • 3418Thu
  • 3719Fri
daynightWeather update from Chicopee Falls / Westover Air Force Base at
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Weather Quick Facts

  • The highest monthly average temperature in Granby for July is 74 degrees
  • The lowest monthly average temperature in Granby for January is 26.6 degrees
  • The most monthly precipitation in Granby occurs in October with 15.5 inches
  • The air quality index in Granby is 5% better than the national average
  • The pollution index in Granby is 188% worse than the national average

Compare Granby, MA Weather

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      Granby 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
      January18°F35°F27°F5.4"
      February16°F35°F27°F5.1"
      March24°F44°F35°F7.4"
      April37°F61°F50°F6.5"
      May46°F70°F60°F4.0"
      June59°F82°F71°F5.1"
      July63°F84°F74°F6.9"
      August61°F84°F74°F5.1"
      September52°F78°F67°F8.7"
      October46°F65°F56°F15.5"
      November31°F51°F41°F6.2"
      December21°F36°F29°F5.2"

      Granby 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.
      IndexGranbyMassachusettsNational
      Air quality index404042
      Pollution index7,859,3608,399,6102,726,193

      Granby air quality

      MeasurementTotal
      Days measured364
      Days with good air quality305
      Days with moderate air quality59
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.030%
      Benzene0.070%
      Carbon Tetrachloride0.030%
      Lead0.320%
      Mercury0.070%

      Average monthly Granby temperature with heat index

      Granby monthly precipitation with daily maximum

      Granby monthly snow depth with daily maximum

      Granby monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Chicopee, MA55,1864020.0%
      Wilbraham, MA3,2514020.0%
      Monson Center, MA1,6884020.0%
      Hatfield, MA1,1544020.0%
      South Deerfield, MA2,1504020.0%
      Granby, MA1,1834020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Cave Spring, GA1,1834412.0%
      Kingston, IL1,1834216.0%
      Queen Anne, MD1,1833628.0%
      North Collins, NY1,1833922.0%
      Chesapeake, OH1,1834216.0%
      Granby, MA1,1834020.0%
      Source: The Granby, MA 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.