| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 33°F | 22°F | 0.4" |
| February | 15°F | 37°F | 25°F | 0.7" |
| March | 29°F | 54°F | 40°F | 1.4" |
| April | 39°F | 66°F | 51°F | 3.5" |
| May | 51°F | 77°F | 63°F | 4.0" |
| June | 62°F | 86°F | 73°F | 5.1" |
| July | 65°F | 89°F | 76°F | 3.0" |
| August | 62°F | 85°F | 73°F | 4.9" |
| September | 53°F | 79°F | 65°F | 3.9" |
| October | 41°F | 67°F | 52°F | 2.4" |
| November | 28°F | 52°F | 39°F | 0.9" |
| December | 16°F | 36°F | 25°F | 1.2" |
| Index | Herman | Nebraska | National |
| Air quality index | 40 | 86 | 42 |
| Pollution index | 238,372 | 590,627 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 283 |
| Days with moderate air quality | 82 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.004% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Little Sioux, IA | 192 | 40 | 20.0% |
| Craig, NE | 152 | 40 | 20.0% |
| Kennard, NE | 416 | 40 | 20.0% |
| Nickerson, NE | 465 | 40 | 20.0% |
| Mondamin, IA | 374 | 40 | 20.0% |
| Herman, NE | 473 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Fort Yukon, AK | 473 | 38 | 24.0% |
| Courtland, CA | 473 | 52 | 4.0% |
| Canal Point, FL | 473 | 36 | 28.0% |
| Thornton, IA | 473 | 15 | 70.0% |
| Creal Springs, IL | 473 | 44 | 12.0% |
| Herman, NE | 473 | 40 | 20.0% |
Here are the best places to live in Nebraska
These are the 10 most affordable cities in Nebraska
Top 10 cities in Nebraska with the best education system
10 Best cities in Nebraska for employment