TODAY NOV24
TEMPERATURE44
HUMIDITY43
PRESSURE100680
WIND COND.320 14.8
  • 4528Mon
  • 4329Tue100%40%
  • 4428Wed
  • 402840%60%
  • 4125Fri60%40%
daynightWeather update from Keene, Dillant-Hopkins Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Marlborough for July is 70.1 degrees
  • The lowest monthly average temperature in Marlborough for January is 23.1 degrees
  • The most monthly precipitation in Marlborough occurs in July with 10.6 inches
  • The air quality index in Marlborough is 19% better than the national average
  • The pollution index in Marlborough is 142% worse than the national average

Compare Marlborough, NH Weather

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      Marlborough 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
      January14°F33°F23°F4.0"
      February14°F35°F24°F4.6"
      March23°F44°F33°F6.9"
      April34°F59°F46°F4.4"
      May45°F70°F57°F5.3"
      June54°F76°F65°F5.7"
      July60°F82°F70°F10.6"
      August57°F80°F67°F6.5"
      September50°F73°F61°F8.8"
      October40°F62°F49°F8.2"
      November29°F49°F39°F4.3"
      December21°F38°F29°F4.5"

      Marlborough 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.
      IndexMarlboroughNew HampshireNational
      Air quality index343442
      Pollution index6,602,8103,959,6182,726,193

      Marlborough air quality

      MeasurementTotal
      Days measured365
      Days with good air quality348
      Days with moderate air quality17
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.070%
      Carbon Tetrachloride0.020%
      Lead0.060%
      Mercury0.010%

      Average monthly Marlborough temperature with heat index

      Marlborough monthly precipitation with daily maximum

      Marlborough monthly snow depth with daily maximum

      Marlborough monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Jaffrey, NH2,7503432.0%
      Keene, NH22,8233432.0%
      Winchester, NH1,9393432.0%
      Antrim, NH1,3643432.0%
      Peterborough, NH2,7043432.0%
      Marlborough, NH1,0933432.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Gales Ferry, CT1,0933726.0%
      Bronson, FL1,0933530.0%
      Hector, MN1,0933236.0%
      Division No. 7, Subd. K, NL1,093n/a 
      Pala, CA1,0946428.0%
      Marlborough, NH1,0933432.0%
      Source: The Marlborough, NH 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.