| 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 | Bethany | Pennsylvania | National |
| Air quality index | 38 | 45 | 42 |
| Pollution index | 1,248,250 | 4,584,805 | 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. |
| Fawn Lake Forest, PA | 640 | 38 | 24.0% |
| Callicoon, NY | 559 | 38 | 24.0% |
| Vandling, PA | 678 | 38 | 24.0% |
| Mayfield, PA | 1,730 | 38 | 24.0% |
| White Mills, PA | 864 | 38 | 24.0% |
| Bethany, PA | 230 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Nelchina, AK | 230 | 31 | 38.0% |
| Friendship, AR | 230 | 32 | 36.0% |
| Riggins, ID | 230 | 29 | 42.0% |
| Coleta, IL | 230 | 42 | 16.0% |
| Tennyson, IN | 230 | 43 | 14.0% |
| Bethany, PA | 230 | 38 | 24.0% |
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