| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 28°F | 51°F | 37°F | 0.5" |
| February | 34°F | 64°F | 47°F | 0.5" |
| March | 43°F | 70°F | 54°F | 8.3" |
| April | 49°F | 73°F | 59°F | 6.5" |
| May | 55°F | 79°F | 65°F | 5.3" |
| June | 67°F | 89°F | 77°F | 7.4" |
| July | 70°F | 94°F | 81°F | 1.4" |
| August | 68°F | 91°F | 78°F | 0.4" |
| September | 64°F | 88°F | 75°F | 3.7" |
| October | 51°F | 78°F | 63°F | 1.6" |
| November | 40°F | 65°F | 51°F | 5.1" |
| December | 29°F | 52°F | 39°F | 2.6" |
| Index | Erick | Oklahoma | National |
| Air quality index | 43 | 55 | 42 |
| Pollution index | 266,616 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 285 |
| Days with moderate air quality | 80 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| 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. |
| Sweetwater, OK | 127 | 43 | 14.0% |
| Texola, OK | 6 | 43 | 14.0% |
| Sayre, OK | 4,480 | 43 | 14.0% |
| Erick, OK | 768 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Unalakleet, AK | 768 | 38 | 24.0% |
| London, AR | 768 | 38 | 24.0% |
| Hana, HI | 768 | 15 | 70.0% |
| Ashland, KS | 768 | 15 | 70.0% |
| Kevil, KY | 768 | 44 | 12.0% |
| Erick, OK | 768 | 43 | 14.0% |
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