| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 35°F | 24°F | 0.1" |
| February | 15°F | 37°F | 25°F | 0.1" |
| March | 23°F | 46°F | 33°F | 0.2" |
| April | 29°F | 54°F | 41°F | 0.4" |
| May | 38°F | 64°F | 50°F | 1.8" |
| June | 45°F | 72°F | 58°F | 2.7" |
| July | 51°F | 84°F | 67°F | 1.0" |
| August | 48°F | 81°F | 64°F | 0.6" |
| September | 41°F | 72°F | 55°F | 1.8" |
| October | 32°F | 55°F | 42°F | 0.5" |
| November | 25°F | 45°F | 34°F | 0.1" |
| December | 11°F | 31°F | 21°F | 0.1" |
| Index | Kevin | Montana | National |
| Air quality index | 21 | 34 | 42 |
| Pollution index | 284,954 | 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 | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Sunburst, MT | 392 | 21 | 58.0% |
| Kevin, MT | 130 | 21 | 58.0% |
| City | Population | Air Quality Index | National Avg. |
| Pitkas Point, AK | 130 | 31 | 38.0% |
| McKittrick, CA | 130 | 67 | 34.0% |
| Parrott, GA | 130 | 39 | 22.0% |
| Atlanta, KS | 130 | 40 | 20.0% |
| Beverly, KS | 130 | 32 | 36.0% |
| Kevin, MT | 130 | 21 | 58.0% |
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