TODAY DEC27
TEMPERATURE38
HUMIDITY92
PRESSURE100480
WIND COND.200 16.6
  • 4525Sat
  • 4528Sun
  • 3719Mon90%40%
  • 2612Tue
  • 216
daynightWeather update from Mitchell, Mitchell Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Letcher for July is 77.2 degrees
  • The lowest monthly average temperature in Letcher for January is 18.2 degrees
  • The most monthly precipitation in Letcher occurs in June with 10.1 inches
  • The air quality index in Letcher is equal to the national average
  • The pollution index in Letcher is 96% better than the national average

Compare Letcher, SD Weather

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      Letcher 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
      January11°F28°F18°F0.8"
      February15°F33°F23°F1.6"
      March28°F50°F37°F3.2"
      April37°F62°F48°F4.7"
      May50°F74°F61°F5.6"
      June62°F84°F72°F10.1"
      July65°F91°F77°F0.0"
      August62°F86°F73°F1.8"
      September55°F83°F67°F4.7"
      October42°F66°F52°F6.7"
      November27°F51°F37°F1.5"
      December11°F29°F20°F0.6"

      Letcher 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.
      IndexLetcherSouth DakotaNational
      Air quality index423642
      Pollution index105,773345,6232,726,193

      Letcher air quality

      MeasurementTotal
      Days measured365
      Days with good air quality284
      Days with moderate air quality76
      Days w/ poor A.Q. for sensitive groups5
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Letcher temperature with heat index

      Letcher monthly precipitation with daily maximum

      Letcher monthly snow depth with daily maximum

      Letcher monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Mount Vernon, SD5003628.0%
      Loomis, SD03628.0%
      Mitchell, SD15,5993628.0%
      Lane, SD314216.0%
      Artesian, SD1814216.0%
      Letcher, SD1914216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Coffee Springs, AL1913530.0%
      Vredenburgh, AL191524.0%
      Hackberry, AZ1911374.0%
      Dixon, IA191468.0%
      Hanlontown, IA1911570.0%
      Letcher, SD1914216.0%
      Source: The Letcher, 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.