| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 38°F | 30°F | 5.3" |
| February | 22°F | 41°F | 31°F | 4.5" |
| March | 31°F | 52°F | 41°F | 6.9" |
| April | 41°F | 65°F | 53°F | 6.5" |
| May | 51°F | 74°F | 62°F | 7.6" |
| June | 60°F | 82°F | 71°F | 8.8" |
| July | 64°F | 87°F | 75°F | 7.6" |
| August | 62°F | 83°F | 72°F | 8.9" |
| September | 55°F | 77°F | 66°F | 10.8" |
| October | 44°F | 66°F | 55°F | 8.6" |
| November | 34°F | 54°F | 44°F | 6.0" |
| December | 28°F | 43°F | 35°F | 6.6" |
| Index | Lykens | Pennsylvania | National |
| Air quality index | 42 | 45 | 42 |
| Pollution index | 3,637,020 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 360 |
| Days with good air quality | 278 |
| Days with moderate air quality | 78 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Freeburg, PA | 793 | 35 | 30.0% |
| Tower City, PA | 1,187 | 42 | 16.0% |
| Jonestown, PA | 1,932 | 42 | 16.0% |
| Fairview-Ferndale, PA | 2,047 | 42 | 16.0% |
| Sand Hill, PA | 2,653 | 42 | 16.0% |
| Lykens, PA | 1,932 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Milo, ME | 1,932 | 31 | 38.0% |
| Morenci, MI | 1,932 | 39 | 22.0% |
| Clayton, NY | 1,932 | 35 | 30.0% |
| Peach Lake, NY | 1,932 | 43 | 14.0% |
| Jonestown, PA | 1,932 | 42 | 16.0% |
| Lykens, PA | 1,932 | 42 | 16.0% |
Here are the best places to live in Pennsylvania
Top 10 cities in Pennsylvania with the best education system
Top 10 best public schools in Lykens
10 best cities to buy a new house in Pennsylvania