East Helena, MT Weather - Forecast & Monthly Averages

TEMPERATURE	39
HUMIDITY	52
PRESSURE
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in East Helena for July is 72.7 degrees
The lowest monthly average temperature in East Helena for December is 21.8 degrees
The most monthly precipitation in East Helena occurs in June with 2 inches
The air quality index in East Helena is 5% better than the national average
The pollution index in East Helena is 58% better than the national average

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East Helena 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	13°F	35°F	24°F	0.6"
February	18°F	41°F	28°F	0.7"
March	25°F	52°F	38°F	0.5"
April	31°F	60°F	44°F	0.9"
May	39°F	69°F	53°F	1.8"
June	47°F	79°F	63°F	2.0"
July	55°F	91°F	73°F	0.7"
August	52°F	88°F	69°F	1.1"
September	44°F	77°F	59°F	1.1"
October	34°F	62°F	46°F	0.8"
November	23°F	47°F	34°F	0.8"
December	12°F	33°F	22°F	0.8"

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East Helena 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	East Helena	Montana	National
Air quality index	40	34	42
Pollution index	1,148,190	834,473	2,726,193

East Helena air quality

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

Air quality details

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

Average monthly East Helena temperature with heat index

East Helena monthly precipitation with daily maximum

East Helena monthly snow depth with daily maximum

East Helena monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Spokane Creek, MT	438	40	20.0%
Helena Valley Northwest, MT	4,256	40	20.0%
South Hills, MT	586	40	20.0%
Clancy, MT	1,964	40	20.0%
Winston, MT	318	40	20.0%
East Helena, MT	1,684	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Rouse, CA	1,684	49	2.0%
Knollwood, IL	1,684	39	22.0%
Princeville, IL	1,684	41	18.0%
Cassopolis, MI	1,684	39	22.0%
Sturgeon Lake 154, AB	1,684	n/a
East Helena, MT	1,684	40	20.0%

Source: The East Helena, 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.