TODAY DEC26
TEMPERATURE39
HUMIDITY87
PRESSURE
WIND COND.160 16.6
  • 4527Fri
  • 4730Sat
  • 4929Sun
  • 3919Mon
  • 2716Tue
daynightWeather update from Yankton, Chan Gurney Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in St. Helena for July is 75.5 degrees
  • The lowest monthly average temperature in St. Helena for January is 21.2 degrees
  • The most monthly precipitation in St. Helena occurs in October with 7.9 inches
  • The air quality index in St. Helena is 17% better than the national average
  • The pollution index in St. Helena is 82% better than the national average

Compare St. Helena, NE Weather

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      St. 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
      January13°F32°F21°F0.9"
      February15°F35°F23°F1.8"
      March28°F50°F37°F2.8"
      April38°F62°F49°F6.1"
      May49°F73°F60°F4.3"
      June60°F83°F71°F6.2"
      July65°F87°F76°F6.5"
      August62°F83°F72°F6.6"
      September53°F77°F64°F5.9"
      October41°F64°F51°F7.9"
      November28°F49°F37°F1.6"
      December15°F33°F23°F2.2"

      St. 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.
      IndexSt. HelenaNebraskaNational
      Air quality index358642
      Pollution index482,612590,6272,726,193

      St. Helena air quality

      MeasurementTotal
      Days measured364
      Days with good air quality322
      Days with moderate air quality42
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.004%
      Mercury0.000%

      Average monthly St. Helena temperature with heat index

      St. Helena monthly precipitation with daily maximum

      St. Helena monthly snow depth with daily maximum

      St. Helena monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Hartington, NE1,5223530.0%
      Obert, NE223530.0%
      Bow Valley, NE963530.0%
      Wynot, NE2523530.0%
      Aten, NE213530.0%
      St. Helena, NE943530.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Georgetown, AR944510.0%
      The Rock, GA943824.0%
      Bennington, ID944412.0%
      Vernon, IL944314.0%
      Jennings, KS941962.0%
      St. Helena, NE943530.0%
      Source: The St. Helena, NE 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.