Climate - Norristown - Pennsylvania
| Jan | Feb | March | April | May | June | |
|---|---|---|---|---|---|---|
| Average high in °F | 39 | 42 | 52 | 64 | 74 | 83 |
| Average low in °F | 23 | 25 | 33 | 42 | 52 | 61 |
| Av. precipitation - inch | 3.86 | 2.91 | 3.94 | 3.74 | 4.65 | 3.66 |
| July | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average high in °F | 87 | 85 | 78 | 66 | 55 | 44 |
| Average low in °F | 66 | 64 | 56 | 44 | 35 | 27 |
| Av. precipitation - inch | 4.53 | 4.57 | 4.49 | 3.31 | 3.9 | 3.62 |
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Norristown Climate Graph - Pennsylvania Climate Chart
Totals and averages
| Annual average high temperature | 64.0 °F |
| Annual average low temperature | 43.9 °F |
| Average temperature | 54.0 °F |
| Average annual precipitation | 47.2 in. |