Climate - Derry - Pennsylvania
| Jan | Feb | March | April | May | June | |
|---|---|---|---|---|---|---|
| Average high in °F | 36 | 40 | 49 | 61 | 71 | 79 |
| Average low in °F | 20 | 21 | 28 | 37 | 47 | 56 |
| Av. precipitation - inch | 3.39 | 3.03 | 3.94 | 4.17 | 4.88 | 5.04 |
| July | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average high in °F | 83 | 82 | 75 | 64 | 51 | 40 |
| Average low in °F | 62 | 60 | 53 | 42 | 33 | 25 |
| Av. precipitation - inch | 5.24 | 4.09 | 4.61 | 3.31 | 4.06 | 3.43 |
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Derry Climate Graph - Pennsylvania Climate Chart
Totals and averages
| Annual average high temperature | 61.0 °F |
| Annual average low temperature | 40.3 °F |
| Average temperature | 50.6 °F |
| Average annual precipitation | 49.2 in. |