| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 37°F | 58°F | 46°F | 1.9" |
| February | 40°F | 64°F | 51°F | 1.6" |
| March | 43°F | 70°F | 55°F | 1.6" |
| April | 46°F | 76°F | 60°F | 1.0" |
| May | 52°F | 85°F | 68°F | 0.3" |
| June | 58°F | 94°F | 75°F | 0.2" |
| July | 62°F | 99°F | 80°F | 0.0" |
| August | 61°F | 98°F | 78°F | 0.0" |
| September | 57°F | 93°F | 74°F | 0.1" |
| October | 50°F | 81°F | 64°F | 0.4" |
| November | 42°F | 68°F | 53°F | 0.9" |
| December | 36°F | 58°F | 46°F | 1.8" |
| Index | Madera | California | National |
| Air quality index | 50 | 55 | 42 |
| Pollution index | 3,767,190 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 189 |
| Days with moderate air quality | 163 |
| Days w/ poor A.Q. for sensitive groups | 13 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.250% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.050% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| Fairmead, CA | 1,133 | 50 | = 100 |
| Parkwood, CA | 2,394 | 50 | = 100 |
| La Vina, CA | 203 | 50 | = 100 |
| Chowchilla, CA | 18,443 | 50 | = 100 |
| Biola, CA | 1,440 | 50 | = 100 |
| Madera, CA | 65,575 | 50 | = 100 |
| City | Population | Air Quality Index | National Avg. |
| Auburn, AL | 65,508 | 42 | 16.0% |
| Halton Hills, ON | 65,483 | n/a | |
| Lakeville, MN | 65,710 | 46 | 8.0% |
| Rowlett, TX | 65,426 | 51 | 2.0% |
| Eastvale, CA | 65,766 | 89 | 78.0% |
| Madera, CA | 65,575 | 50 | = 100 |
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