TODAY AUG04
TEMPERATURE91
HUMIDITY17
PRESSURE
WIND COND.300 35.3
  • 8655Tue
  • 9158Wed
  • 9055Thu40%
  • 8250Fri
  • 8452Sat
daynightWeather update from Helena Regional Airport at

Key findings

  • The highest monthly average temperature in North for July is 73 degrees
  • The lowest monthly average temperature in North for December is 22 degrees
  • The most monthly precipitation in North occurs in June with 2 inches
  • The air quality index in North is 20% better than the national average
  • The pollution index in North is 77% better than the national average

Compare Helena, MT Weather

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      North 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
      January13°F35°F24°F0.6"
      February18°F41°F28°F0.7"
      March25°F52°F38°F0.5"
      April31°F60°F44°F0.9"
      May39°F69°F53°F1.8"
      June47°F79°F63°F2.0"
      July55°F91°F73°F0.7"
      August52°F88°F69°F1.1"
      September44°F77°F59°F1.1"
      October34°F62°F46°F0.8"
      November23°F47°F34°F0.8"
      December12°F33°F22°F0.8"

      North 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.
      IndexNorthHelenaMontana
      Air quality index404034
      Pollution index1,148,1901,148,190685,925

      North air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality288
      Days with moderate air quality75
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      North air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.020%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.000%

      Average monthly North temperature with heat index

      North monthly precipitation with daily maximum

      North monthly snow depth with daily maximum

      North monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Helena Valley Northeast, MT3,1544020%
      Helena West Side, MT1,2424020%
      Spokane Creek, MT3174020%
      Helena Valley Northwest, MT3,9674020%
      Marysville, MT924020%
      Helena, MT30,1024020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Myrtle Beach, SC30,1061472%
      Orcutt, CA30,109468%
      Burlingame, CA30,1184314%
      Holly Springs, NC30,126468%
      Lawrenceville, GA30,1273726%
      Helena, MT30,1024020%
      Source: The North, Helena, MT 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.