| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 62°F | 48°F | 2.0" |
| February | 42°F | 67°F | 52°F | 1.4" |
| March | 50°F | 74°F | 60°F | 4.1" |
| April | 57°F | 81°F | 68°F | 2.9" |
| May | 64°F | 85°F | 73°F | 5.7" |
| June | 71°F | 92°F | 81°F | 3.1" |
| July | 73°F | 95°F | 83°F | 2.7" |
| August | 74°F | 96°F | 84°F | 2.7" |
| September | 68°F | 90°F | 78°F | 3.8" |
| October | 58°F | 82°F | 69°F | 3.7" |
| November | 49°F | 71°F | 59°F | 2.5" |
| December | 41°F | 62°F | 50°F | 1.5" |
| Index | Burnet | Texas | National |
| Air quality index | 42 | 52 | 42 |
| Pollution index | 1,922,400 | 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 | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Buchanan Lake Village, TX | 808 | 42 | 16.0% |
| Bertram, TX | 1,890 | 42 | 16.0% |
| Buchanan Dam, TX | 1,411 | 42 | 16.0% |
| Granite Shoals, TX | 5,142 | 44 | 12.0% |
| Meadowlakes, TX | 2,274 | 44 | 12.0% |
| Burnet, TX | 6,357 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Beauceville, QC | 6,357 | n/a | |
| Dillon, SC | 6,358 | 30 | 40.0% |
| De Soto, MO | 6,359 | 54 | 8.0% |
| Johnsburg, IL | 6,354 | 39 | 22.0% |
| Ramtown, NJ | 6,354 | 41 | 18.0% |
| Burnet, TX | 6,357 | 42 | 16.0% |
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