| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 57°F | 44°F | 0.5" |
| February | 33°F | 62°F | 49°F | 0.3" |
| March | 40°F | 71°F | 57°F | 0.2" |
| April | 47°F | 78°F | 65°F | 0.6" |
| May | 55°F | 84°F | 72°F | 0.4" |
| June | 65°F | 94°F | 82°F | 0.9" |
| July | 67°F | 92°F | 81°F | 0.8" |
| August | 66°F | 91°F | 80°F | 1.5" |
| September | 60°F | 84°F | 73°F | 1.2" |
| October | 49°F | 77°F | 64°F | 0.8" |
| November | 38°F | 66°F | 53°F | 0.5" |
| December | 30°F | 56°F | 43°F | 1.5" |
| Index | Tatum | New Mexico | National |
| Air quality index | 45 | 37 | 42 |
| Pollution index | 1,201,960 | 2,051,791 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 252 |
| Days with moderate air quality | 109 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Tatum, NM | 773 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| St. Lucie Village, FL | 773 | 36 | 28.0% |
| Reynolds, GA | 773 | 38 | 24.0% |
| Bluffs, IL | 773 | 41 | 18.0% |
| Ogden, IL | 773 | 42 | 16.0% |
| Claremont, MN | 773 | 36 | 28.0% |
| Tatum, NM | 773 | 45 | 10.0% |
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