July 29th is traditionally known as a “Rain Day” in Waynesburg, PA. It all began in 1878 when a farmer casually told drug store clerk William Allison that it always seemed to rain on July 29th in this southwestern PA town. The clerk made a note of it and started keeping a yearly tabulation. It has rained 112 out of the past 136 years. The day is celebrated in Waynesburg each year with a Rainy-Day Festival including banquets and a pageant. On average it rains every 3rd day in July in the town, the late spring months are the rainiest – but the humidity is highest on average in July. Rain 82% of the time on the same date is unusual for this climate – odds would be against such an occurred – yet the is no explanation that – well – holds water.
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