TODAY DEC22
TEMPERATURE23
HUMIDITY85
PRESSURE101120
WIND COND.130 14.8
  • 2114Mon
  • 2921Tue
  • 3327
  • 3328Thu
  • 3328Fri20%
daynightWeather update from Watertown, Watertown Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Webster for July is 72.7 degrees
  • The lowest monthly average temperature in Webster for January is 14.7 degrees
  • The most monthly precipitation in Webster occurs in June with 8.9 inches
  • The air quality index in Webster is 41% better than the national average
  • The pollution index in Webster is 90% better than the national average

Compare Webster, SD Weather

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      Webster 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"

      Webster 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.
      IndexWebsterSouth DakotaNational
      Air quality index253642
      Pollution index267,939345,6232,726,193

      Webster air quality

      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

      Air quality details

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

      Average monthly Webster temperature with heat index

      Webster monthly precipitation with daily maximum

      Webster monthly snow depth with daily maximum

      Webster monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Pierpont, SD1932060.0%
      Bristol, SD2802060.0%
      Butler, SD132550.0%
      Waubay, SD5302550.0%
      Lily, SD32550.0%
      Webster, SD1,6812550.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Grant Park, IL1,6815510.0%
      Dalton, OH1,681468.0%
      Tremont, PA1,6814216.0%
      Sacré-Coeur, QC1,681n/a 
      Ashland, AL1,6803824.0%
      Webster, SD1,6812550.0%
      Source: The Webster, 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.