| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 28°F | 57°F | 41°F | 0.5" |
| February | 32°F | 64°F | 47°F | 0.3" |
| March | 39°F | 72°F | 55°F | 0.2" |
| April | 45°F | 79°F | 62°F | 0.3" |
| May | 53°F | 86°F | 70°F | 0.5" |
| June | 64°F | 96°F | 81°F | 0.3" |
| July | 67°F | 95°F | 80°F | 1.9" |
| August | 65°F | 92°F | 78°F | 1.8" |
| September | 59°F | 87°F | 72°F | 2.1" |
| October | 48°F | 79°F | 63°F | 0.6" |
| November | 37°F | 67°F | 51°F | 0.4" |
| December | 29°F | 57°F | 42°F | 0.6" |
| Index | Williamsburg | New Mexico | National |
| Air quality index | 37 | 37 | 42 |
| Pollution index | 975,581 | 2,051,791 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 362 |
| Days with moderate air quality | 3 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Oasis, NM | 117 | 51 | 2.0% |
| Elephant Butte, NM | 1,552 | 51 | 2.0% |
| Truth or Consequences, NM | 5,839 | 51 | 2.0% |
| Hot Springs Landing, NM | 47 | 51 | 2.0% |
| Caballo, NM | 118 | 51 | 2.0% |
| Williamsburg, NM | 481 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Pleasant Groves, AL | 481 | 44 | 12.0% |
| Newell, CA | 481 | 29 | 42.0% |
| Manilla, IN | 481 | 28 | 44.0% |
| Kensington, KS | 481 | 19 | 62.0% |
| Scandia, KS | 481 | 32 | 36.0% |
| Williamsburg, NM | 481 | 37 | 26.0% |
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