TODAY JUL20
TEMPERATURE90
HUMIDITY18
PRESSURE
WIND COND.40 12.8
  • 8851Sat
  • 8150Sun
  • 8453Mon
  • 8254Tue
  • 8454Wed
daynightWeather update from Helena Regional Airport at

West 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
January-25°F55°F25°F0.3"
February-15°F65°F30°F0.8"
March-11°F74°F36°F0.5"
April6°F81°F44°F1.2"
May25°F91°F55°F2.1"
June33°F99°F62°F2.4"
July43°F102°F74°F0.6"
August41°F100°F69°F0.6"
September31°F97°F59°F1.1"
October5°F84°F45°F1.0"
November-11°F72°F36°F0.5"
December-23°F60°F21°F0.4"

Did you know?

  • The highest monthly average temperature in West for July is 74 degrees.
  • The lowest monthly average temperature in West for December is 21 degrees.
  • The most monthly precipitation in West occurs in June with 2.4 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.

Find Real Estate Listings In West

Location
Price
Bedrooms
Bathrooms
 

New 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.
Helena Valley Northeast, MT3,1543530%
Helena West Side, MT1,2423530%
South Hills, MT5293530%
Helena Valley Northwest, MT3,9673530%
Jefferson City, MT6863530%
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.