| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 53°F | 35°F | 0.5" |
| February | 24°F | 56°F | 38°F | 0.4" |
| March | 34°F | 68°F | 49°F | 1.0" |
| April | 42°F | 75°F | 56°F | 1.9" |
| May | 51°F | 82°F | 66°F | 1.9" |
| June | 63°F | 94°F | 78°F | 2.2" |
| July | 67°F | 96°F | 81°F | 2.4" |
| August | 65°F | 93°F | 78°F | 3.3" |
| September | 57°F | 87°F | 71°F | 1.5" |
| October | 44°F | 76°F | 58°F | 2.0" |
| November | 32°F | 64°F | 46°F | 0.3" |
| December | 23°F | 51°F | 35°F | 1.0" |
| Index | Goodwell | Oklahoma | National |
| Air quality index | 44 | 55 | 42 |
| Pollution index | 1,265,680 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 259 |
| Days with moderate air quality | 96 |
| Days w/ poor A.Q. for sensitive groups | 10 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Guymon, OK | 11,381 | 44 | 12.0% |
| Texhoma, OK | 1,027 | 44 | 12.0% |
| Texhoma, TX | 414 | 44 | 12.0% |
| Goodwell, OK | 1,108 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Island City, OR | 1,108 | 20 | 60.0% |
| Almedia, PA | 1,108 | 35 | 30.0% |
| San Felipe, TX | 1,108 | 52 | 4.0% |
| Mont-Carmel, QC | 1,108 | n/a | |
| Bury, QC | 1,108 | n/a | |
| Goodwell, OK | 1,108 | 44 | 12.0% |
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