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Chelsea 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 Chelsea for July is 73 degrees.
  • The lowest monthly average temperature in Chelsea for January is 14 degrees.
  • The most monthly precipitation in Chelsea occurs in July with 3.7 inches.
  • The air quality index in Chelsea is 47% better than the national average.
  • The pollution index in Chelsea is 97% better than the national average.

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Compare Chelsea, SD Weather To Other Cities

Chelsea 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.
IndexChelseaSouth DakotaNational
Air quality index263650
Pollution index120,529463,9835,066,862

Chelsea 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

Chelsea air quality information

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

Average monthly Chelsea temperature with heat index

Chelsea monthly precipitation with daily maximum

Chelsea monthly snow depth with daily maximum

Chelsea monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Mellette, SD1602648%
Ashton, SD1402648%
Northville, SD1602648%
Cresbard, SD1382648%
Warner, SD4542648%
Chelsea, SD382648%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Nashville, KS383922%
Hampden, ND383530%
Chiawuli Tak, AZ38468%
Watson, MO38484%
Cotter, IA385612%
Chelsea, SD382648%
Source: The Chelsea, 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.