| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 57°F | 46°F | 2.1" |
| February | 39°F | 63°F | 50°F | 1.7" |
| March | 43°F | 70°F | 55°F | 1.5" |
| April | 46°F | 75°F | 60°F | 1.4" |
| May | 52°F | 85°F | 68°F | 0.3" |
| June | 58°F | 93°F | 76°F | 0.2" |
| July | 63°F | 98°F | 80°F | 0.0" |
| August | 61°F | 96°F | 78°F | 0.0" |
| September | 57°F | 92°F | 74°F | 0.0" |
| October | 50°F | 81°F | 64°F | 0.6" |
| November | 42°F | 67°F | 53°F | 1.0" |
| December | 36°F | 57°F | 45°F | 1.8" |
| Index | Groveland | California | National |
| Air quality index | 39 | 55 | 42 |
| Pollution index | 2,624,520 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 331 |
| Days with moderate air quality | 33 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.070% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Coulterville, CA | 23 | 39 | 22.0% |
| Columbia, CA | 2,086 | 39 | 22.0% |
| Mono Vista, CA | 3,646 | 39 | 22.0% |
| Tuolumne City, CA | 1,414 | 39 | 22.0% |
| Greeley Hill, CA | 919 | 39 | 22.0% |
| Groveland, CA | 249 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Tusayan, AZ | 249 | 45 | 10.0% |
| Pittman, FL | 249 | 37 | 26.0% |
| Renwick, IA | 249 | 15 | 70.0% |
| Steamboat Rock, IA | 249 | 39 | 22.0% |
| Straughn, IN | 249 | 28 | 44.0% |
| Groveland, CA | 249 | 39 | 22.0% |
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