| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 33°F | 22°F | 0.5" |
| February | 13°F | 35°F | 22°F | 0.6" |
| March | 21°F | 42°F | 30°F | 0.9" |
| April | 27°F | 52°F | 38°F | 1.1" |
| May | 36°F | 62°F | 48°F | 2.6" |
| June | 43°F | 69°F | 55°F | 4.1" |
| July | 48°F | 80°F | 63°F | 1.7" |
| August | 47°F | 79°F | 61°F | 1.6" |
| September | 40°F | 69°F | 53°F | 1.5" |
| October | 30°F | 56°F | 41°F | 1.1" |
| November | 21°F | 42°F | 30°F | 0.7" |
| December | 10°F | 30°F | 19°F | 0.9" |
| Index | Starr School | Montana | National |
| Air quality index | 37 | 34 | 42 |
| Pollution index | 260,100 | 834,473 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 302 |
| Days with moderate air quality | 62 |
| 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 | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| North Browning, MT | 2,930 | 37 | 26.0% |
| South Browning, MT | 1,783 | 37 | 26.0% |
| Browning, MT | 916 | 37 | 26.0% |
| East Glacier Park Village, MT | 327 | 37 | 26.0% |
| Starr School, MT | 322 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Pinal, AZ | 322 | 60 | 20.0% |
| Cromberg, CA | 322 | 44 | 12.0% |
| Hillrose, CO | 322 | 45 | 10.0% |
| Hillcrest Heights, FL | 322 | 36 | 28.0% |
| Ellis Grove, IL | 322 | 54 | 8.0% |
| Starr School, MT | 322 | 37 | 26.0% |