| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 39°F | 27°F | 0.5" |
| February | 20°F | 43°F | 31°F | 1.3" |
| March | 32°F | 55°F | 42°F | 1.0" |
| April | 36°F | 61°F | 47°F | 1.8" |
| May | 44°F | 71°F | 56°F | 2.7" |
| June | 53°F | 78°F | 64°F | 5.2" |
| July | 61°F | 96°F | 78°F | 1.0" |
| August | 56°F | 89°F | 71°F | 2.8" |
| September | 48°F | 78°F | 60°F | 3.9" |
| October | 42°F | 66°F | 52°F | 1.8" |
| November | 32°F | 51°F | 41°F | 1.2" |
| December | 22°F | 38°F | 29°F | 0.1" |
| Index | Malmstrom AFB | Montana | National |
| Air quality index | 21 | 34 | 42 |
| Pollution index | 250,374 | 834,473 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 350 |
| Days with moderate air quality | 12 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.004% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Great Falls, MT | 58,717 | 21 | 58.0% |
| Belt, MT | 537 | 21 | 58.0% |
| Sand Coulee, MT | 201 | 21 | 58.0% |
| Black Eagle, MT | 836 | 21 | 58.0% |
| Stockett, MT | 189 | 21 | 58.0% |
| Malmstrom AFB, MT | 3,902 | 21 | 58.0% |
| City | Population | Air Quality Index | National Avg. |
| Laureldale, PA | 3,901 | 42 | 16.0% |
| Greendale, IN | 3,903 | 54 | 8.0% |
| Bunkie, LA | 3,903 | 30 | 40.0% |
| Vandalia, MO | 3,903 | 41 | 18.0% |
| Ridgeland, SC | 3,903 | 29 | 42.0% |
| Malmstrom AFB, MT | 3,902 | 21 | 58.0% |
Here are the best places to live in Montana
Most Dangerous Cities In The US
See the best places to live in Malmstrom AFB
Check out the 10 safest cities in Montana