| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 34°F | 24°F | 8.1" |
| February | 15°F | 32°F | 22°F | 2.4" |
| March | 23°F | 41°F | 31°F | 7.1" |
| April | 35°F | 59°F | 45°F | 10.5" |
| May | 44°F | 69°F | 55°F | 4.0" |
| June | 56°F | 78°F | 66°F | 10.3" |
| July | 59°F | 81°F | 69°F | 7.3" |
| August | 59°F | 81°F | 68°F | 5.1" |
| September | 51°F | 75°F | 62°F | 3.8" |
| October | 44°F | 63°F | 52°F | 14.1" |
| November | 30°F | 48°F | 38°F | 8.2" |
| December | 19°F | 33°F | 26°F | 4.4" |
| Index | Jeffersonville | New York | National |
| Air quality index | 38 | 43 | 42 |
| Pollution index | 1,248,250 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 329 |
| Days with moderate air quality | 36 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Livingston Manor, NY | 928 | 36 | 28.0% |
| Loch Sheldrake, NY | 1,588 | 36 | 28.0% |
| Smallwood, NY | 619 | 36 | 28.0% |
| Monticello, NY | 6,429 | 36 | 28.0% |
| South Fallsburg, NY | 1,312 | 36 | 28.0% |
| Jeffersonville, NY | 372 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Seatonville, IL | 372 | 0 | 100.0% |
| Advance, MI | 372 | 36 | 28.0% |
| Miltona, MN | 372 | 29 | 42.0% |
| Narrowsburg, NY | 372 | 38 | 24.0% |
| Ford Cliff, PA | 372 | 38 | 24.0% |
| Jeffersonville, NY | 372 | 38 | 24.0% |
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