Pottstown experiences a moderate climate with cold winters and warm summers. Winters are typically chilly, with January and February averaging around 0°C, while temperatures can drop as low as -15°C in February. As spring approaches, temperatures gradually rise, reaching an average of 12°C in April and 16°C in May, with occasional warmer days up to 31°C or 33°C. Summer months are mild, with July and August averaging around 24°C, but temperatures can reach highs of 36°C in June. Autumn brings a return to cooler temperatures, with September's average temperature dropping to 20°C before gradually decreasing into winter again.