TODAY NOV25
TEMPERATURE23
HUMIDITY58
PRESSURE102539.85
WIND COND.300 27.8
  • 2910Tue
  • 268Wed20%
  • 251
  • 183Fri20%
  • 15-1Sat20%
daynightWeather update from Redfield Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in St. Lawrence for July is 75 degrees
  • The lowest monthly average temperature in St. Lawrence for January is 16.8 degrees
  • The most monthly precipitation in St. Lawrence occurs in June with 4.5 inches
  • The air quality index in St. Lawrence is 52% better than the national average
  • The pollution index in St. Lawrence is 95% better than the national average

Compare St. Lawrence, SD Weather

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      St. Lawrence 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
      January6°F28°F17°F0.5"
      February9°F34°F20°F0.7"
      March22°F48°F34°F1.0"
      April33°F62°F47°F2.2"
      May44°F73°F58°F3.2"
      June55°F83°F69°F4.5"
      July61°F89°F75°F2.7"
      August58°F85°F71°F3.3"
      September49°F79°F63°F2.8"
      October36°F64°F49°F2.2"
      November22°F49°F34°F0.8"
      December9°F31°F19°F1.3"

      St. Lawrence 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. LawrenceSouth DakotaNational
      Air quality index203642
      Pollution index138,400345,6232,726,193

      St. Lawrence air quality

      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

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.002%
      Carbon Tetrachloride0.000%
      Lead0.004%
      Mercury0.000%

      Average monthly St. Lawrence temperature with heat index

      St. Lawrence monthly precipitation with daily maximum

      St. Lawrence monthly snow depth with daily maximum

      St. Lawrence monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Ree Heights, SD602060.0%
      Miller, SD1,3662060.0%
      Wessington, SD2412060.0%
      St. Lawrence, SD1672060.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Hartly, DE1674216.0%
      Lidderdale, IA1673726.0%
      Sims, IL1674314.0%
      Salvisa, KY1674216.0%
      Burkittsville, MD1674020.0%
      St. Lawrence, SD1672060.0%
      Source: The St. Lawrence, 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.