| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 53°F | 40°F | 3.1" |
| February | 30°F | 56°F | 42°F | 2.4" |
| March | 38°F | 65°F | 51°F | 3.5" |
| April | 47°F | 74°F | 60°F | 3.7" |
| May | 56°F | 80°F | 67°F | 3.7" |
| June | 65°F | 88°F | 76°F | 4.5" |
| July | 69°F | 90°F | 78°F | 4.1" |
| August | 68°F | 89°F | 77°F | 4.6" |
| September | 61°F | 83°F | 71°F | 4.3" |
| October | 49°F | 74°F | 60°F | 3.7" |
| November | 37°F | 64°F | 50°F | 3.7" |
| December | 33°F | 56°F | 44°F | 3.8" |
| Index | Trinity | North Carolina | National |
| Air quality index | 40 | 35 | 42 |
| Pollution index | 16,424,300 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 357 |
| Days with good air quality | 260 |
| Days with moderate air quality | 97 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.130% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.030% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Archdale, NC | 11,738 | 40 | 20.0% |
| Thomasville, NC | 26,834 | 40 | 20.0% |
| High Point, NC | 112,434 | 40 | 20.0% |
| Welcome, NC | 3,050 | 40 | 20.0% |
| Lexington, NC | 18,970 | 40 | 20.0% |
| Trinity, NC | 6,619 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Red Chute, LA | 6,619 | 39 | 22.0% |
| Kentville, NS | 6,619 | n/a | |
| Southgate, FL | 6,617 | 38 | 24.0% |
| Vandalia, IL | 6,615 | 40 | 20.0% |
| Fox Point, WI | 6,623 | 44 | 12.0% |
| Trinity, NC | 6,619 | 40 | 20.0% |
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