St. Ignatius, MT Weather - Forecast & Monthly Averages

TEMPERATURE	34
HUMIDITY	100
PRESSURE
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in St. Ignatius for July is 71 degrees
The lowest monthly average temperature in St. Ignatius for December is 23.7 degrees
The most monthly precipitation in St. Ignatius occurs in June with 2 inches
The air quality index in St. Ignatius is 5% better than the national average
The pollution index in St. Ignatius is 69% better than the national average

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St. Ignatius 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	16°F	34°F	25°F	0.9"
February	21°F	40°F	30°F	1.0"
March	26°F	51°F	38°F	1.0"
April	31°F	60°F	44°F	1.1"
May	38°F	69°F	53°F	1.4"
June	45°F	78°F	61°F	2.0"
July	51°F	91°F	71°F	0.6"
August	49°F	88°F	68°F	0.7"
September	42°F	77°F	58°F	1.0"
October	33°F	59°F	45°F	1.2"
November	24°F	44°F	33°F	1.4"
December	15°F	32°F	24°F	1.2"

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St. Ignatius 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	St. Ignatius	Montana	National
Air quality index	40	34	42
Pollution index	848,303	834,473	2,726,193

St. Ignatius air quality

Measurement	Total
Days measured	365
Days with good air quality	224
Days with moderate air quality	137
Days w/ poor A.Q. for sensitive groups	3
Days with unhealthy air quality	1

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.020%
Carbon Tetrachloride	0.002%
Lead	0.010%
Mercury	0.000%

Average monthly St. Ignatius temperature with heat index

St. Ignatius monthly precipitation with daily maximum

St. Ignatius monthly snow depth with daily maximum

St. Ignatius monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Arlee, MT	592	40	20.0%
Old Agency, MT	61	40	20.0%
Charlo, MT	261	40	20.0%
Ravalli, MT	220	40	20.0%
Dixon, MT	252	40	20.0%
St. Ignatius, MT	785	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Greenville, CA	785	46	8.0%
Paragon Estates, CO	785	47	6.0%
Attapulgus, GA	785	40	20.0%
Milan, GA	785	26	48.0%
Ubly, MI	785	26	48.0%
St. Ignatius, MT	785	40	20.0%

Source: The St. Ignatius, 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.