TODAY AUG20
TEMPERATURE81
HUMIDITY34
PRESSURE
WIND COND.33 2
  • 6745Mon30%50%
  • 7847Tue20%
  • 8350Wed
  • 8348Thu
  • 7546Fri
daynightWeather update from STEVI at

Hamilton 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
January16°F34°F25°F0.9"
February21°F40°F30°F1.0"
March26°F51°F38°F1.0"
April31°F60°F44°F1.1"
May38°F69°F53°F1.4"
June45°F78°F61°F2.0"
July51°F91°F71°F0.6"
August49°F88°F68°F0.7"
September42°F77°F58°F1.0"
October33°F59°F45°F1.2"
November24°F44°F33°F1.4"
December15°F32°F24°F1.2"

Did you know?

  • The highest monthly average temperature in Hamilton for July is 71 degrees.
  • The lowest monthly average temperature in Hamilton for December is 24 degrees.
  • The most monthly precipitation in Hamilton occurs in June with 2 inches.
  • The air quality index in Hamilton is 10% worse than the national average.
  • The pollution index in Hamilton is 83% better than the national average.

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Compare Hamilton, MT Weather To Other Cities

Hamilton 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.
IndexHamiltonMontanaNational
Air quality index553450
Pollution index848,303685,9255,066,862

Hamilton air quality information

MeasurementTotal
Days measured365
Days with good air quality160
Days with moderate air quality181
Days w/ poor A.Q. for sensitive groups18
Days with unhealthy air quality6

Hamilton air quality information

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

Average monthly Hamilton temperature with heat index

Hamilton monthly precipitation with daily maximum

Hamilton monthly snow depth with daily maximum

Hamilton monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Charlos Heights, MT1685510%
Corvallis, MT9875510%
Pinesdale, MT9545510%
Victor, MT7485510%
Hamilton, MT4,5395510%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Cherry Grove, OH4,539548%
Centreville, MD4,5383824%
Berlin, MD4,5383628%
Highgrove, CA4,5378570%
Arabi, LA4,5424510%
Hamilton, MT4,5395510%
Source: The Hamilton, 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.