| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 55°F | 36°F | 2.2" |
| February | 25°F | 57°F | 39°F | 0.3" |
| March | 33°F | 70°F | 49°F | 1.3" |
| April | 41°F | 77°F | 58°F | 2.0" |
| May | 50°F | 83°F | 66°F | 6.8" |
| June | 62°F | 93°F | 77°F | 6.9" |
| July | 64°F | 91°F | 78°F | 5.9" |
| August | 63°F | 92°F | 77°F | 3.2" |
| September | 56°F | 85°F | 69°F | 2.9" |
| October | 44°F | 76°F | 58°F | 1.0" |
| November | 32°F | 65°F | 46°F | 1.8" |
| December | 25°F | 55°F | 38°F | 1.2" |
| Index | Dimmitt | Texas | National |
| Air quality index | 44 | 52 | 42 |
| Pollution index | 254,818 | 2,009,300 | 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 | 0.004% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Hart, TX | 1,161 | 25 | 50.0% |
| Nazareth, TX | 298 | 44 | 12.0% |
| Dimmitt, TX | 4,106 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Grant, MN | 4,106 | 46 | 8.0% |
| Beavercreek, OR | 4,105 | 38 | 24.0% |
| Fox Farm-College, WY | 4,105 | 43 | 14.0% |
| Fleetwood, PA | 4,104 | 42 | 16.0% |
| Sinking Spring, PA | 4,104 | 42 | 16.0% |
| Dimmitt, TX | 4,106 | 44 | 12.0% |
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