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Key findings

  • The highest monthly average temperature in Seneca for July is 74 degrees
  • The lowest monthly average temperature in Seneca for January is 17 degrees
  • The most monthly precipitation in Seneca occurs in May with 3.3 inches
  • The air quality index in Seneca is 60% better than the national average
  • The pollution index in Seneca is 98% better than the national average

Compare Seneca, SD Weather

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      Seneca 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
      January7°F28°F17°F0.4"
      February9°F31°F19°F0.8"
      March23°F47°F33°F0.9"
      April33°F60°F45°F1.9"
      May44°F71°F57°F3.3"
      June55°F81°F67°F3.1"
      July61°F89°F74°F2.0"
      August59°F86°F71°F3.0"
      September50°F77°F62°F1.6"
      October37°F61°F48°F1.8"
      November23°F46°F33°F0.4"
      December10°F29°F19°F0.7"

      Seneca 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.
      IndexSenecaSouth DakotaNational
      Air quality index203650
      Pollution index120,529463,9835,066,862

      Seneca air quality information

      MeasurementTotal
      Days measured122
      Days with good air quality112
      Days with moderate air quality10
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Seneca air quality information

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

      Average monthly Seneca temperature with heat index

      Seneca monthly precipitation with daily maximum

      Seneca monthly snow depth with daily maximum

      Seneca monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Lebanon, SD232060%
      Onaka, SD122060%
      Tolstoy, SD292060%
      Hoven, SD4342060%
      Seneca, SD92060%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Ruso, ND93628%
      Braddock, ND93628%
      Heimdal, ND93628%
      Paxson, AK93824%
      Oak Grove, OK94510%
      Seneca, SD92060%
      Source: The Seneca, SD 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.