TODAY MAR29
TEMPERATURE33
HUMIDITY66
PRESSURE101760
WIND COND.290 5.4
  • 5740Fri
  • 6239Sat100%20%
  • 5242Sun80%
  • 5344Mon80%80%
  • 5936Tue60%40%
daynightWeather update from Toledo - Toledo Executive Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Helena for July is 74.8 degrees
  • The lowest monthly average temperature in Helena for January is 26.8 degrees
  • The most monthly precipitation in Helena occurs in July with 4.2 inches
  • The air quality index in Helena is 5% better than the national average
  • The pollution index in Helena is 12% better than the national average

Compare Helena, OH Weather

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      Helena 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
      January19°F35°F27°F2.0"
      February19°F35°F27°F1.8"
      March29°F49°F38°F2.9"
      April40°F62°F50°F3.6"
      May51°F74°F62°F3.8"
      June61°F83°F71°F4.1"
      July64°F86°F75°F4.2"
      August63°F84°F73°F3.7"
      September56°F77°F66°F3.6"
      October45°F65°F54°F2.5"
      November34°F52°F43°F2.6"
      December25°F40°F32°F2.6"

      Helena 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.
      IndexHelenaOhioNational
      Air quality index404042
      Pollution index2,402,5804,472,3862,726,193

      Helena air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality291
      Days with moderate air quality73
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Helena air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.005%
      Lead0.020%
      Mercury0.003%

      Average monthly Helena temperature with heat index

      Helena monthly precipitation with daily maximum

      Helena monthly snow depth with daily maximum

      Helena monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bascom, OH1894020.0%
      Bloomdale, OH6934020.0%
      West Millgrove, OH1354020.0%
      Rocky Ridge, OH4054020.0%
      Elmore, OH1,7564020.0%
      Helena, OH2694020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Tuluksak, AK2693138.0%
      Akron, AL2693530.0%
      Axis, AL2694216.0%
      Parkdale, AR2693432.0%
      Midland, CO2694510.0%
      Helena, OH2694020.0%
      Source: The Helena, OH 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.