TODAY SEP23
TEMPERATURE52
HUMIDITY47
PRESSURE
WIND COND.280 4.7
  • 6141Mon40%
  • 5437Tue
  • 6342Wed
  • 5540Thu
  • 6343Fri
daynightWeather update from Hulett Municipal Airport at
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Spearfish 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
January15°F38°F26°F0.8"
February16°F40°F27°F1.2"
March26°F53°F38°F2.5"
April33°F59°F45°F4.6"
May43°F68°F55°F6.2"
June54°F81°F67°F5.1"
July61°F89°F75°F3.4"
August59°F87°F72°F6.4"
September50°F79°F63°F4.3"
October37°F63°F49°F5.6"
November25°F51°F37°F3.2"
December14°F36°F24°F1.6"

Did you know?

  • The highest monthly average temperature in Spearfish for July is 75 degrees.
  • The lowest monthly average temperature in Spearfish for December is 24 degrees.
  • The most monthly precipitation in Spearfish occurs in August with 6.4 inches.
  • The air quality index in Spearfish is 13% better than the national average.
  • The pollution index in Spearfish is 90% better than the national average.

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Compare Spearfish, SD Weather To Other Cities

Spearfish 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.
IndexSpearfishSouth DakotaNational
Air quality index433650
Pollution index486,607463,9835,066,862

Spearfish air quality information

MeasurementTotal
Days measured365
Days with good air quality264
Days with moderate air quality101
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Spearfish air quality information

PollutantTotal
Arsenic0.003%
Benzene0.010%
Carbon Tetrachloride0.001%
Lead0.080%
Mercury0.001%

Average monthly Spearfish temperature with heat index

Spearfish monthly precipitation with daily maximum

Spearfish monthly snow depth with daily maximum

Spearfish monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Fruitdale, SD594314%
St. Onge, SD344314%
Belle Fourche, SD5,6964314%
Lead, SD3,0504314%
Sturgis, SD6,7114314%
Spearfish, SD11,1764314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Spencer, IA11,1724118%
Westwood, NJ11,170536%
Oneida, NY11,1863432%
Raymondville, TX11,1653628%
Seymour, TN11,1644118%
Spearfish, SD11,1764314%
Source: The Spearfish, 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.