TODAY NOV13
TEMPERATURE33
HUMIDITY47
PRESSURE
WIND COND.
  • 4428Tue
  • 4834Wed
  • 4833Thu20%
  • 3621Fri
  • 3824Sat
daynightWeather update from Helena Regional Airport at

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West Average Temperature

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

Real Estate Listings In West

Compare Helena, MT Weather To Other Cities

West 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.
IndexWestHelenaMontana
Air quality index353534
Pollution index1,148,1901,148,190685,925

West 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

West air quality information

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

Average monthly West temperature with heat index

West monthly precipitation with daily maximum

West monthly snow depth with daily maximum

West monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
East Helena, MT2,2863530%
Helena Valley West Central, MT8,7533530%
Montana City, MT2,8783530%
Helena Valley Northeast, MT3,1543530%
Helena West Side, MT1,2423530%
Helena, MT30,1023530%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Myrtle Beach, SC30,1061570%
Orcutt, CA30,1095612%
Burlingame, CA30,118484%
Holly Springs, NC30,1264314%
Lawrenceville, GA30,1274216%
Helena, MT30,1023530%
Source: The West, 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.