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Garrison 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
January19°F31°F25°F1.6"
February21°F35°F27°F1.3"
March26°F46°F36°F2.5"
April30°F55°F43°F2.4"
May37°F64°F51°F4.2"
June45°F71°F59°F3.0"
July50°F85°F68°F4.1"
August46°F82°F65°F4.6"
September40°F73°F57°F6.3"
October33°F55°F44°F3.0"
November24°F39°F31°F2.0"
December15°F28°F21°F1.8"

Did you know?

  • The highest monthly average temperature in Garrison for July is 68 degrees.
  • The lowest monthly average temperature in Garrison for December is 21 degrees.
  • The most monthly precipitation in Garrison occurs in September with 6.3 inches.
  • The air quality index in Garrison is 29% better than the national average.
  • The pollution index in Garrison is 93% better than the national average.

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Garrison 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.
IndexGarrisonMontanaNational
Air quality index353450
Pollution index320,407685,9255,066,862

Garrison air quality information

MeasurementTotal
Days measured365
Days with good air quality315
Days with moderate air quality50
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Garrison air quality information

PollutantTotal
Arsenic0.000%
Benzene0.010%
Carbon Tetrachloride0.000%
Lead0.001%
Mercury0.000%

Average monthly Garrison temperature with heat index

Garrison monthly precipitation with daily maximum

Garrison monthly snow depth with daily maximum

Garrison monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Deer Lodge, MT3,0622942%
Avon, MT1133530%
Garrison, MT663530%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Wanda, MN663530%
Anton Chico, NM664118%
Alsen, ND663530%
Raymond, KS663922%
Scarville, IA661864%
Garrison, MT663530%
Source: The Garrison, 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.