TODAY AUG15
TEMPERATURE87
HUMIDITY15
PRESSURE
WIND COND.40 11.4
  • 9155Wed
  • 9157Thu20%
  • 8956Fri20%40%
  • 7954Sat
  • 7951Sun
daynightWeather update from Helena Regional Airport at

East Helena Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January13°F35°F24°F0.6"
February18°F41°F28°F0.7"
March25°F52°F38°F0.5"
April31°F60°F44°F0.9"
May39°F69°F53°F1.8"
June47°F79°F63°F2.0"
July55°F91°F73°F0.7"
August52°F88°F69°F1.1"
September44°F77°F59°F1.1"
October34°F62°F46°F0.8"
November23°F47°F34°F0.8"
December12°F33°F22°F0.8"

Did you know?

  • The highest monthly average temperature in East Helena for July is 73 degrees.
  • The lowest monthly average temperature in East Helena for December is 22 degrees.
  • The most monthly precipitation in East Helena occurs in June with 2 inches.
  • The air quality index in East Helena is 29% better than the national average.
  • The pollution index in East Helena is 77% better than the national average.

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Compare East Helena, MT Weather To Other Cities

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.
IndexEast HelenaMontanaNational
Air quality index353450
Pollution index1,148,190685,9255,066,862

East Helena air quality information

MeasurementTotal
Days measured365
Days with good air quality315
Days with moderate air quality50
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

East Helena air quality information

PollutantTotal
Arsenic0.000%
Benzene0.020%
Carbon Tetrachloride0.002%
Lead0.010%
Mercury0.000%

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, StatePopulationAir Quality IndexNational Avg.
Helena Valley Northwest, MT3,9673530%
Jefferson City, MT6863530%
Winston, MT2423530%
Clancy, MT1,6123530%
Helena Valley Southeast, MT7,5433530%
East Helena, MT2,2863530%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Denver, NC2,2873628%
Garyville, LA2,2852844%
Rossmoyne, OH2,287548%
Zion, PA2,2873922%
St. Paul, NE2,285265430%
East Helena, MT2,2863530%
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.