TODAY AUG21
TEMPERATURE67
HUMIDITY61
PRESSURE30.13
WIND COND.10 6.9
  • 7957Wed
  • 8161Thu60%
  • 8059Fri30%
  • 8457Sat
  • 8159Sun20%
daynightWeather update from Aberdeen, Aberdeen Regional Airport at

Westport Average Weather

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
January2°F26°F14°F0.6"
February5°F30°F17°F0.7"
March19°F45°F31°F0.9"
April31°F61°F45°F2.3"
May43°F72°F57°F3.5"
June53°F82°F68°F3.6"
July58°F88°F73°F3.7"
August55°F84°F69°F2.5"
September46°F78°F61°F2.1"
October34°F63°F47°F2.0"
November19°F47°F32°F0.6"
December6°F28°F17°F1.0"

Did you know?

  • The highest monthly average temperature in Westport for July is 73 degrees.
  • The lowest monthly average temperature in Westport for January is 14 degrees.
  • The most monthly precipitation in Westport occurs in July with 3.7 inches.
  • The air quality index in Westport is 47% better than the national average.
  • The pollution index in Westport is 87% better than the national average.

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Compare Westport, SD Weather To Other Cities

Westport 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.
IndexWestportSouth DakotaNational
Air quality index263650
Pollution index658,408463,9835,066,862

Westport air quality information

MeasurementTotal
Days measured121
Days with good air quality100
Days with moderate air quality21
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Westport air quality information

PollutantTotal
Arsenic0.000%
Benzene0.010%
Carbon Tetrachloride0.002%
Lead0.010%
Mercury0.000%

Average monthly Westport temperature with heat index

Westport monthly precipitation with daily maximum

Westport monthly snow depth with daily maximum

Westport monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Columbia, SD1492648%
Aberdeen, SD27,7832648%
Frederick, SD2402648%
Bath, SD2422648%
Wetonka, SD32648%
Westport, SD1232648%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
South Lead Hill, AR1233432%
Edgar, MT1232452%
Auburn, WV1233432%
Datil, NM123512%
Brussels, IL1236020%
Westport, SD1232648%
Source: The Westport, 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.