Big Sky, MT Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Big Sky for July is 69.6 degrees
The lowest monthly average temperature in Big Sky for December is 20 degrees
The most monthly precipitation in Big Sky occurs in June with 2.7 inches
The air quality index in Big Sky is 41% better than the national average
The pollution index in Big Sky is 89% better than the national average

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Big Sky 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	11°F	35°F	22°F	0.3"
February	15°F	39°F	27°F	0.4"
March	24°F	51°F	36°F	0.9"
April	29°F	59°F	43°F	1.7"
May	37°F	67°F	52°F	2.2"
June	44°F	78°F	60°F	2.7"
July	50°F	90°F	70°F	0.8"
August	47°F	87°F	66°F	1.2"
September	40°F	77°F	57°F	1.0"
October	31°F	61°F	44°F	1.3"
November	20°F	44°F	31°F	1.0"
December	9°F	32°F	20°F	0.5"

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Big Sky 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	Big Sky	Montana	National
Air quality index	25	34	42
Pollution index	293,782	834,473	2,726,193

Big Sky air quality

Measurement	Total
Days measured	365
Days with good air quality	337
Days with moderate air quality	28
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.004%
Carbon Tetrachloride	0.000%
Lead	0.000%
Mercury	0.000%

Average monthly Big Sky temperature with heat index

Big Sky monthly precipitation with daily maximum

Big Sky monthly snow depth with daily maximum

Big Sky monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Big Sky, MT	3,054	25	50.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Hartville, OH	3,054	46	8.0%
McDonald, OH	3,054	42	16.0%
High Level, AB	3,053	n/a
Paddock Lake, WI	3,055	39	22.0%
Dadeville, AL	3,056	52	4.0%
Big Sky, MT	3,054	25	50.0%

Source: The Big Sky, 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.