Garrison, MT Weather - Forecast & Monthly Averages

TEMPERATURE	39
HUMIDITY	34
PRESSURE
WIND COND.	113 20.9

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Weather Quick Facts

The highest monthly average temperature in Garrison for July is 68.2 degrees
The lowest monthly average temperature in Garrison for December is 21.3 degrees
The most monthly precipitation in Garrison occurs in September with 6.3 inches
The air quality index in Garrison is 5% better than the national average
The pollution index in Garrison is 88% better than the national average

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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.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	19°F	31°F	25°F	1.6"
February	21°F	35°F	27°F	1.3"
March	26°F	46°F	36°F	2.5"
April	30°F	55°F	43°F	2.4"
May	37°F	64°F	51°F	4.2"
June	45°F	71°F	59°F	3.0"
July	50°F	85°F	68°F	4.1"
August	46°F	82°F	65°F	4.6"
September	40°F	73°F	57°F	6.3"
October	33°F	55°F	44°F	3.0"
November	24°F	39°F	31°F	2.0"
December	15°F	28°F	21°F	1.8"

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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.
Index	Garrison	Montana	National
Air quality index	40	34	42
Pollution index	320,407	834,473	2,726,193

Garrison air quality information

Measurement	Total
Days measured	365
Days with good air quality	288
Days with moderate air quality	75
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Garrison air quality information

Pollutant	Total
Arsenic	0.000%
Benzene	0.010%
Carbon Tetrachloride	0.000%
Lead	0.001%
Mercury	0.000%

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	Population	Air Quality Index	National Avg.
Deer Lodge, MT	2,893	20	60.0%
Avon, MT	127	40	20.0%
Garrison, MT	88	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Beaver, AK	88	38	24.0%
Nondalton, AK	88	31	38.0%
Casmalia, CA	88	46	8.0%
Furnace Creek, CA	88	15	70.0%
Long Barn, CA	88	39	22.0%
Garrison, MT	88	40	20.0%

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.