TODAY JUN18
TEMPERATURE49
HUMIDITY93
PRESSURE30.15
WIND COND.40 11.4
  • 5546Mon90%30%
  • 6049Tue40%70%
  • 5947Wed50%40%
  • 6447Thu
  • 6949Fri
daynightWeather update from Custer, Custer County Airport at

Custer 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
January-13°F62°F25°F0.4"
February-29°F59°F25°F0.5"
March-8°F69°F32°F1.1"
April-2°F75°F39°F2.0"
May12°F86°F49°F3.5"
June30°F92°F59°F2.2"
July37°F99°F68°F2.4"
August37°F95°F64°F2.4"
September25°F90°F55°F1.7"
October-3°F81°F41°F1.0"
November-1°F70°F35°F0.3"
December-22°F56°F23°F0.5"

Did you know?

  • The highest monthly average temperature in Custer for July is 68 degrees.
  • The lowest monthly average temperature in Custer for December is 23 degrees.
  • The most monthly precipitation in Custer occurs in May with 3.5 inches.
  • The air quality index in Custer is 13% better than the national average.
  • The pollution index in Custer is 61% better than the national average.

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Compare Custer, SD Weather To Other Cities

Custer 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.
IndexCusterSouth DakotaNational
Air quality index433650
Pollution index1,968,790463,9835,066,862

Custer 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

Custer air quality information

PollutantTotal
Arsenic0.003%
Benzene0.030%
Carbon Tetrachloride0.004%
Lead0.020%
Mercury0.010%

Average monthly Custer temperature with heat index

Custer monthly precipitation with daily maximum

Custer monthly snow depth with daily maximum

Custer monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Hill City, SD1,3584314%
Keystone, SD3184314%
Pringle, SD1404314%
Custer, SD1,7704314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Neoga, IL1,7703726%
Elizabethville, PA1,770524%
Aberdeen, IN1,7713138%
West Baraboo, WI1,7713628%
Kingstown, MD1,7713824%
Custer, SD1,7704314%
Source: The Custer, 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.