| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 40°F | 28°F | 0.3" |
| February | 20°F | 43°F | 30°F | 0.2" |
| March | 30°F | 57°F | 42°F | 0.9" |
| April | 39°F | 65°F | 50°F | 4.4" |
| May | 49°F | 74°F | 61°F | 3.4" |
| June | 61°F | 85°F | 72°F | 4.1" |
| July | 65°F | 89°F | 76°F | 3.1" |
| August | 62°F | 85°F | 72°F | 3.9" |
| September | 53°F | 80°F | 65°F | 2.1" |
| October | 41°F | 67°F | 52°F | 2.1" |
| November | 29°F | 54°F | 40°F | 0.6" |
| December | 19°F | 39°F | 28°F | 0.5" |
| Index | Bertrand | Nebraska | National |
| Air quality index | 19 | 86 | 42 |
| Pollution index | 5,232,950 | 590,627 | 2,726,193 |
| Measurement | Total |
| Days measured | 60 |
| Days with good air quality | 55 |
| Days with moderate air quality | 5 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.010% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Overton, NE | 702 | 19 | 62.0% |
| Atlanta, NE | 90 | 19 | 62.0% |
| Holdrege, NE | 5,406 | 19 | 62.0% |
| Elwood, NE | 674 | 19 | 62.0% |
| Loomis, NE | 411 | 19 | 62.0% |
| Bertrand, NE | 741 | 19 | 62.0% |
| City | Population | Air Quality Index | National Avg. |
| Miracle Valley, AZ | 741 | 45 | 10.0% |
| Catheys Valley, CA | 741 | 48 | 4.0% |
| Udall, KS | 741 | 40 | 20.0% |
| Rich Square, NC | 741 | 36 | 28.0% |
| Rutland, OH | 741 | 25 | 50.0% |
| Bertrand, NE | 741 | 19 | 62.0% |
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