| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 45°F | 34°F | 3.8" |
| February | 26°F | 48°F | 36°F | 3.1" |
| March | 36°F | 60°F | 48°F | 4.7" |
| April | 45°F | 72°F | 59°F | 5.9" |
| May | 55°F | 79°F | 67°F | 4.9" |
| June | 64°F | 88°F | 76°F | 4.3" |
| July | 67°F | 90°F | 78°F | 5.2" |
| August | 66°F | 90°F | 77°F | 3.2" |
| September | 58°F | 84°F | 70°F | 4.2" |
| October | 46°F | 73°F | 59°F | 3.9" |
| November | 35°F | 60°F | 47°F | 4.1" |
| December | 29°F | 48°F | 38°F | 4.8" |
| Index | Darmstadt | Indiana | National |
| Air quality index | 45 | 56 | 42 |
| Pollution index | 4,284,280 | 2,719,453 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 244 |
| Days with moderate air quality | 111 |
| Days w/ poor A.Q. for sensitive groups | 10 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.005% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Chandler, IN | 3,669 | 45 | 10.0% |
| Haubstadt, IN | 1,738 | 45 | 10.0% |
| Parkers Settlement, IN | 591 | 45 | 10.0% |
| Evansville, IN | 118,414 | 45 | 10.0% |
| Cynthiana, IN | 653 | 45 | 10.0% |
| Darmstadt, IN | 1,189 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Elgin, MN | 1,189 | 36 | 28.0% |
| Duncansville, PA | 1,189 | 41 | 18.0% |
| Pocono Ranch Lands, PA | 1,189 | 34 | 32.0% |
| Due West, SC | 1,189 | 31 | 38.0% |
| McAdam, NB | 1,189 | n/a | |
| Darmstadt, IN | 1,189 | 45 | 10.0% |
Here are the best places to live in Indiana
Check out the 10 safest cities in Indiana
These are the 10 most affordable cities in Indiana
10 Best cities in Indiana for employment