| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 40°F | 27°F | 0.3" |
| February | 19°F | 43°F | 29°F | 0.4" |
| March | 29°F | 58°F | 41°F | 0.8" |
| April | 38°F | 65°F | 50°F | 3.6" |
| May | 48°F | 74°F | 60°F | 3.5" |
| June | 59°F | 84°F | 71°F | 3.8" |
| July | 64°F | 89°F | 76°F | 2.7" |
| August | 61°F | 86°F | 73°F | 3.5" |
| September | 52°F | 80°F | 64°F | 1.7" |
| October | 39°F | 67°F | 51°F | 1.8" |
| November | 27°F | 54°F | 39°F | 0.8" |
| December | 16°F | 39°F | 26°F | 0.4" |
| Index | Farnam | Nebraska | National |
| Air quality index | 19 | 86 | 42 |
| Pollution index | 73,381 | 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 | 0.000% |
| Benzene | 0.001% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Cozad, NE | 3,776 | 19 | 62.0% |
| Moorefield, NE | 30 | 19 | 62.0% |
| Willow Island, NE | 8 | 19 | 62.0% |
| Eustis, NE | 502 | 19 | 62.0% |
| Stockville, NE | 9 | 19 | 62.0% |
| Farnam, NE | 173 | 19 | 62.0% |
| City | Population | Air Quality Index | National Avg. |
| Chickaloon, AK | 173 | 31 | 38.0% |
| Tanana, AK | 173 | 38 | 24.0% |
| Riverview, AL | 173 | 41 | 18.0% |
| Bodcaw, AR | 173 | 39 | 22.0% |
| Houston, AR | 173 | 45 | 10.0% |
| Farnam, NE | 173 | 19 | 62.0% |
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