| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 49°F | 36°F | 0.6" |
| February | 29°F | 52°F | 39°F | 1.0" |
| March | 40°F | 65°F | 51°F | 2.2" |
| April | 49°F | 73°F | 60°F | 2.6" |
| May | 58°F | 80°F | 68°F | 5.1" |
| June | 69°F | 89°F | 79°F | 7.0" |
| July | 71°F | 93°F | 81°F | 3.8" |
| August | 71°F | 92°F | 81°F | 4.6" |
| September | 61°F | 84°F | 72°F | 2.6" |
| October | 49°F | 72°F | 59°F | 4.2" |
| November | 39°F | 64°F | 50°F | 0.8" |
| December | 26°F | 48°F | 36°F | 0.9" |
| Index | Billings | Oklahoma | National |
| Air quality index | 40 | 55 | 42 |
| Pollution index | 811,653 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 292 |
| Days with moderate air quality | 72 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.210% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.060% |
| Mercury | 0.130% |
| City | Population | Air Quality Index | National Avg. |
| Garber, OK | 707 | 40 | 20.0% |
| Hunter, OK | 142 | 40 | 20.0% |
| Lamont, OK | 298 | 40 | 20.0% |
| Red Rock, OK | 219 | 40 | 20.0% |
| Tonkawa, OK | 3,000 | 40 | 20.0% |
| Billings, OK | 407 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Nutrioso, AZ | 407 | 44 | 12.0% |
| Bangor, CA | 407 | 44 | 12.0% |
| Dorrington, CA | 407 | 39 | 22.0% |
| Point Arena, CA | 407 | 33 | 34.0% |
| Newcastle, NE | 407 | 35 | 30.0% |
| Billings, OK | 407 | 40 | 20.0% |
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