| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 62°F | 48°F | 2.2" |
| February | 43°F | 67°F | 53°F | 1.5" |
| March | 50°F | 74°F | 61°F | 4.1" |
| April | 57°F | 81°F | 68°F | 4.2" |
| May | 64°F | 85°F | 74°F | 8.9" |
| June | 72°F | 94°F | 82°F | 3.6" |
| July | 74°F | 96°F | 84°F | 1.0" |
| August | 74°F | 97°F | 85°F | 2.1" |
| September | 68°F | 90°F | 78°F | 3.4" |
| October | 58°F | 82°F | 69°F | 2.7" |
| November | 48°F | 72°F | 59°F | 2.4" |
| December | 40°F | 62°F | 50°F | 1.3" |
| Index | Nolanville | Texas | National |
| Air quality index | 42 | 52 | 42 |
| Pollution index | 4,598,870 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 284 |
| Days with moderate air quality | 79 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.004% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.070% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Holland, TX | 1,574 | 42 | 16.0% |
| Harker Heights, TX | 31,657 | 42 | 16.0% |
| Salado, TX | 2,848 | 42 | 16.0% |
| Killeen, TX | 148,573 | 42 | 16.0% |
| Belton, TX | 22,173 | 42 | 16.0% |
| Nolanville, TX | 5,732 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| New Brighton, PA | 5,731 | 6 | 88.0% |
| Lewisburg, PA | 5,730 | 35 | 30.0% |
| Schriever, LA | 5,734 | 41 | 18.0% |
| Estherville, IA | 5,729 | 15 | 70.0% |
| Belding, MI | 5,729 | 38 | 24.0% |
| Nolanville, TX | 5,732 | 42 | 16.0% |
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