| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 61°F | 47°F | 3.5" |
| February | 39°F | 63°F | 49°F | 1.2" |
| March | 47°F | 73°F | 58°F | 4.2" |
| April | 57°F | 81°F | 68°F | 4.0" |
| May | 63°F | 85°F | 73°F | 11.3" |
| June | 71°F | 94°F | 82°F | 14.0" |
| July | 73°F | 96°F | 84°F | 13.5" |
| August | 74°F | 97°F | 85°F | 3.4" |
| September | 67°F | 90°F | 78°F | 7.1" |
| October | 57°F | 80°F | 68°F | 8.8" |
| November | 46°F | 70°F | 57°F | 5.0" |
| December | 39°F | 61°F | 48°F | 5.1" |
| Index | Lampasas | Texas | National |
| Air quality index | 42 | 52 | 42 |
| Pollution index | 798,696 | 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 | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Kempner, TX | 1,057 | 42 | 16.0% |
| Lometa, TX | 451 | 42 | 16.0% |
| Lampasas, TX | 7,869 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Blandford-Blenheim, ON | 7,869 | n/a | |
| Santa Clara, UT | 7,868 | 44 | 12.0% |
| East Zorra-Tavistock, ON | 7,870 | n/a | |
| Dexter, MO | 7,867 | 26 | 48.0% |
| Marengo, IL | 7,871 | 42 | 16.0% |
| Lampasas, TX | 7,869 | 42 | 16.0% |
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