TODAY NOV21
TEMPERATURE66°F
HUMIDITY26%
PRESSURE29.90 inHg
WIND COND.250° 18.4 mph
  • 7239Tue
  • 6245Wed
  • 7542Thu
  • 6636Fri
  • 5534Sat
daynightWeather update from CHINOOK, on 16 Oct 6:30 pm MDT

Chinook 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-34°F64°F20°F0.3"
February-28°F63°F22°F0.4"
March-20°F76°F33°F0.5"
April8°F83°F44°F1.0"
May14°F94°F54°F1.7"
June30°F100°F62°F2.4"
July41°F106°F73°F0.8"
August36°F102°F68°F0.8"
September25°F99°F58°F1.1"
October3°F86°F44°F0.7"
November-14°F71°F35°F0.4"
December-35°F56°F17°F0.4"

Did you know?

  • The highest monthly average temperature in Chinook for July is 73 degrees.
  • The lowest monthly average temperature in Chinook for December is 17 degrees.
  • The most monthly precipitation in Chinook occurs in June with 2.4 inches.
  • The air quality index in Chinook is 47% better than the national average.
  • The pollution index in Chinook is 95% better than the national average.

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Compare Chinook, MT Weather To Other Cities

Chinook 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.
IndexChinookMontanaNational
Air quality index263450
Pollution index232,374686,9455,100,859

Chinook air quality information

MeasurementTotal
Days measured337
Days with good air quality311
Days with moderate air quality26
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Chinook air quality information

PollutantTotal
Arsenic0.000%
Benzene0.004%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

Average monthly Chinook temperature with heat index

Chinook monthly precipitation with daily maximum

Chinook monthly snow depth with daily maximum

Chinook monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Chinook, MT1,1652648%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Belle Vernon, PA1,1655612%
Paul, ID1,1651374%
Epps, LA1,1655612%
South Lebanon, OR1,1642354%
Hollister, NC1,1663432%
Chinook, MT1,1652648%
Source: The Chinook, 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.