TODAY MAR03
TEMPERATURE43
HUMIDITY89
PRESSURE101930
WIND COND. 7.6
  • 5038Mon
  • 4639Tue40%60%
  • 5739Wed30%50%
  • 4230Thu50%40%
  • 4029Fri30%30%
daynightWeather update from Jaffrey Airport-Silver Ranch at
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Weather Quick Facts

  • The highest monthly average temperature in Hillsborough for July is 71.3 degrees
  • The lowest monthly average temperature in Hillsborough for January is 23.2 degrees
  • The most monthly precipitation in Hillsborough occurs in October with 6.5 inches
  • The air quality index in Hillsborough is 36% better than the national average
  • The pollution index in Hillsborough is 142% worse than the national average

Compare Hillsborough, NH Weather

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      Hillsborough 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°F35°F23°F2.8"
      February12°F37°F25°F3.3"
      March21°F46°F33°F3.3"
      April32°F62°F47°F3.8"
      May43°F73°F57°F4.1"
      June52°F80°F66°F5.0"
      July58°F85°F71°F4.4"
      August55°F84°F69°F4.1"
      September48°F77°F62°F3.8"
      October38°F64°F50°F6.5"
      November28°F52°F39°F3.3"
      December18°F40°F29°F4.4"

      Hillsborough 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.
      IndexHillsboroughNew HampshireNational
      Air quality index273442
      Pollution index6,602,8103,959,6182,726,193

      Hillsborough air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality360
      Days with moderate air quality5
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Hillsborough air quality information

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

      Average monthly Hillsborough temperature with heat index

      Hillsborough monthly precipitation with daily maximum

      Hillsborough monthly snow depth with daily maximum

      Hillsborough monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bradford, NH3062746.0%
      Contoocook, NH1,3532746.0%
      Henniker, NH2,5662746.0%
      Warner, NH6382746.0%
      Hancock, NH2313432.0%
      Hillsborough, NH1,4212746.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Velda City, MO1,421548.0%
      Stanfield, NC1,421492.0%
      Basin, WY1,4213922.0%
      Matagami, QC1,421n/a 
      Prairie Lakes, MB1,421n/a 
      Hillsborough, NH1,4212746.0%
      Source: The Hillsborough, 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.