TODAY SEP24
TEMPERATURE59
HUMIDITY53
PRESSURE29.99
WIND COND.320 24.1
  • 6951Sat
  • 7854Sun
  • 7955Mon
  • 8058Tue
  • 7856Wed30%
daynightWeather update from Sisseton, Sisseton Municipal Airport at

Key findings

  • The highest monthly average temperature in Roslyn for July is 72.7 degrees
  • The lowest monthly average temperature in Roslyn for January is 14.7 degrees
  • The most monthly precipitation in Roslyn occurs in June with 8.9 inches
  • The air quality index in Roslyn is 50% better than the national average
  • The pollution index in Roslyn is 95% better than the national average

Compare Roslyn, SD Weather

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      Roslyn 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°F26°F15°F0.8"
      February10°F27°F17°F1.4"
      March24°F44°F32°F2.6"
      April35°F58°F45°F6.4"
      May49°F71°F58°F6.6"
      June60°F80°F69°F8.9"
      July62°F85°F73°F5.8"
      August58°F82°F68°F7.5"
      September53°F78°F63°F5.3"
      October40°F63°F50°F6.0"
      November26°F46°F34°F2.2"
      December11°F26°F18°F1.2"

      Roslyn 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.
      IndexRoslynSouth DakotaNational
      Air quality index253650
      Pollution index267,939463,9835,066,862

      Roslyn air quality information

      MeasurementTotal
      Days measured361
      Days with good air quality325
      Days with moderate air quality36
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Roslyn air quality information

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

      Average monthly Roslyn temperature with heat index

      Roslyn monthly precipitation with daily maximum

      Roslyn monthly snow depth with daily maximum

      Roslyn monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Bristol, SD3502060%
      Eden, SD1132550%
      Webster, SD1,8132550%
      Grenville, SD842550%
      Ortley, SD462550%
      Roslyn, SD1972550%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Moore, MT1972158%
      Hall, NY1973432%
      Mud Bay, AK1972060%
      Woodland, AL1973824%
      Coleville, CA1971374%
      Roslyn, SD1972550%
      Source: The Roslyn, 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.