| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 39°F | 25°F | 1.2" |
| February | 13°F | 38°F | 24°F | 1.0" |
| March | 24°F | 53°F | 37°F | 2.2" |
| April | 38°F | 65°F | 50°F | 4.5" |
| May | 50°F | 76°F | 62°F | 10.1" |
| June | 61°F | 85°F | 72°F | 9.8" |
| July | 62°F | 87°F | 74°F | 3.0" |
| August | 64°F | 86°F | 74°F | 8.3" |
| September | 55°F | 82°F | 67°F | 4.7" |
| October | 42°F | 68°F | 53°F | 9.2" |
| November | 24°F | 49°F | 35°F | 2.5" |
| December | 17°F | 39°F | 27°F | 2.9" |
| Index | Ithaca | Nebraska | National |
| Air quality index | 31 | 86 | 42 |
| Pollution index | 2,170,910 | 590,627 | 2,726,193 |
| Measurement | Total |
| Days measured | 360 |
| Days with good air quality | 338 |
| Days with moderate air quality | 22 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Davey, NE | 137 | 31 | 38.0% |
| Ashland, NE | 2,834 | 31 | 38.0% |
| Malmo, NE | 163 | 31 | 38.0% |
| Greenwood, NE | 489 | 31 | 38.0% |
| Prague, NE | 317 | 31 | 38.0% |
| Ithaca, NE | 138 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Reader, AR | 138 | 32 | 36.0% |
| Winchester, AR | 138 | 43 | 14.0% |
| Jackson Lake, CO | 138 | 45 | 10.0% |
| Trail Side, CO | 138 | 45 | 10.0% |
| Jersey, GA | 138 | 44 | 12.0% |
| Ithaca, NE | 138 | 31 | 38.0% |
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