TODAY AUG16
TEMPERATURE88
HUMIDITY19
PRESSURE
WIND COND.170 6.9
  • 9763Fri20%
  • 8157Sat50%50%
  • 8056Sun20%20%
  • 7752Mon40%20%
  • 8355Tue
daynightWeather update from Billings, Billings Logan International 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
January17°F39°F27°F0.5"
February19°F43°F29°F0.5"
March27°F54°F39°F1.1"
April34°F61°F46°F1.7"
May42°F70°F55°F3.0"
June51°F81°F65°F1.7"
July59°F92°F75°F0.9"
August56°F89°F72°F1.0"
September48°F79°F62°F1.6"
October38°F63°F49°F1.7"
November27°F50°F37°F0.8"
December16°F36°F25°F0.9"

Did you know?

  • The highest monthly average temperature in Custer for July is 75 degrees.
  • The lowest monthly average temperature in Custer for December is 25 degrees.
  • The most monthly precipitation in Custer occurs in May with 3 inches.
  • The air quality index in Custer is 51% better than the national average.
  • The pollution index in Custer is 97% better than the national average.

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Compare Custer, MT 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.
IndexCusterMontanaNational
Air quality index243450
Pollution index143,915685,9255,066,862

Custer air quality information

MeasurementTotal
Days measured365
Days with good air quality340
Days with moderate air quality24
Days w/ poor A.Q. for sensitive groups1
Days with unhealthy air quality

Custer air quality information

PollutantTotal
Arsenic0.000%
Benzene0.003%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

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.
Custer, MT1322452%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Tatitlek, AK1322942%
Octavia, NE1323432%
Bluff City, KS1324412%
Palo Blanco, TX1323628%
Glen Echo Park, MO1326020%
Custer, MT1322452%
Source: The Custer, MT 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.