| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 51°F | 40°F | 3.8" |
| February | 34°F | 53°F | 43°F | 3.2" |
| March | 44°F | 64°F | 53°F | 5.1" |
| April | 52°F | 74°F | 63°F | 5.2" |
| May | 61°F | 81°F | 70°F | 6.9" |
| June | 69°F | 90°F | 79°F | 2.9" |
| July | 71°F | 91°F | 80°F | 3.3" |
| August | 70°F | 91°F | 80°F | 2.1" |
| September | 63°F | 86°F | 73°F | 2.6" |
| October | 51°F | 75°F | 62°F | 3.5" |
| November | 41°F | 63°F | 51°F | 3.7" |
| December | 36°F | 53°F | 44°F | 5.7" |
| Index | Jericho | Arkansas | National |
| Air quality index | 45 | 38 | 42 |
| Pollution index | 2,860,420 | 1,487,822 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 221 |
| Days with moderate air quality | 139 |
| Days w/ poor A.Q. for sensitive groups | 5 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.040% |
| Mercury | 0.640% |
| City | Population | Air Quality Index | National Avg. |
| Jennette, AR | 61 | 45 | 10.0% |
| Birdsong, AR | 29 | 45 | 10.0% |
| Marion, AR | 12,371 | 45 | 10.0% |
| Memphis, TN | 650,910 | 45 | 10.0% |
| Clarkedale, AR | 493 | 45 | 10.0% |
| Jericho, AR | 69 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Datto, AR | 69 | 26 | 48.0% |
| Moskowite Corner, CA | 69 | 35 | 30.0% |
| Trona, CA | 69 | 15 | 70.0% |
| Hartman, CO | 69 | 15 | 70.0% |
| Simpson, IL | 69 | 44 | 12.0% |
| Jericho, AR | 69 | 45 | 10.0% |
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