| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 41°F | 29°F | 0.7" |
| February | 24°F | 49°F | 35°F | 0.5" |
| March | 28°F | 57°F | 42°F | 0.8" |
| April | 31°F | 63°F | 47°F | 0.9" |
| May | 39°F | 73°F | 56°F | 1.1" |
| June | 47°F | 84°F | 66°F | 1.0" |
| July | 54°F | 96°F | 76°F | 0.2" |
| August | 52°F | 93°F | 73°F | 0.1" |
| September | 43°F | 83°F | 63°F | 0.6" |
| October | 34°F | 68°F | 49°F | 0.8" |
| November | 26°F | 53°F | 38°F | 0.7" |
| December | 18°F | 41°F | 29°F | 1.1" |
| Index | Jordan Valley | Oregon | National |
| Air quality index | 36 | 32 | 42 |
| Pollution index | 1,096,590 | 7,156,356 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 293 |
| Days with moderate air quality | 60 |
| Days w/ poor A.Q. for sensitive groups | 9 |
| Days with unhealthy air quality | 3 |
| Pollutant | Total |
| Arsenic | 0.060% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.020% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Jordan Valley, OR | 166 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Beatrice, AL | 166 | 52 | 4.0% |
| Oil Trough, AR | 166 | 45 | 10.0% |
| Sedgwick, CO | 166 | 19 | 62.0% |
| Dewy Rose, GA | 166 | 44 | 12.0% |
| Alexander, IA | 166 | 15 | 70.0% |
| Jordan Valley, OR | 166 | 36 | 28.0% |