West Yellowstone, MT Weather - Forecast & Monthly Averages

TEMPERATURE	34
HUMIDITY	65
PRESSURE
WIND COND.	67 4.5

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Weather Quick Facts

The highest monthly average temperature in West Yellowstone for July is 56.3 degrees
The lowest monthly average temperature in West Yellowstone for January is 11.6 degrees
The most monthly precipitation in West Yellowstone occurs in January with 3.4 inches
The air quality index in West Yellowstone is 41% better than the national average
The pollution index in West Yellowstone is 34% worse than the national average

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West Yellowstone 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	1°F	24°F	12°F	3.4"
February	3°F	28°F	15°F	2.3"
March	9°F	36°F	22°F	2.3"
April	17°F	43°F	29°F	2.5"
May	26°F	52°F	38°F	2.5"
June	33°F	64°F	48°F	2.2"
July	39°F	74°F	56°F	1.5"
August	37°F	72°F	54°F	1.4"
September	31°F	63°F	45°F	1.7"
October	24°F	48°F	34°F	2.2"
November	13°F	34°F	23°F	2.3"
December	3°F	23°F	13°F	3.1"

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West Yellowstone 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	West Yellowstone	Montana	National
Air quality index	25	34	42
Pollution index	3,657,990	834,473	2,726,193

West Yellowstone 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	0.040%
Benzene	0.040%
Carbon Tetrachloride	0.010%
Lead	0.040%
Mercury	0.030%

Average monthly West Yellowstone temperature with heat index

West Yellowstone monthly precipitation with daily maximum

West Yellowstone monthly snow depth with daily maximum

West Yellowstone monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Hebgen Lake Estates, MT	66	25	50.0%
West Yellowstone, MT	1,090	25	50.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Ray City, GA	1,090	35	30.0%
Rochelle, GA	1,090	39	22.0%
Buffalo, IA	1,090	46	8.0%
Minier, IL	1,090	44	12.0%
Horine, MO	1,090	54	8.0%
West Yellowstone, MT	1,090	25	50.0%

Source: The West Yellowstone, 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.