Is folk meteorology true? Short answer: not really.

In European folklore, if it rains on Medard Day, it’s supposed to rain for another 40 days, otherwise a drought would follow. According to Wikipedia, St. Medard’s Day is celebrated on the 8th June in honor of a 6th century French bishop, regarded as the patron saint of weather. This is the day that supposedly sets the pattern for the following summer.

Dataset for the project downloaded from OMSZ Meteorológiai Adattár (The Hungarian Meteorological Database) and contains 100 years of historical weather data for Budapest.

Open it on Tableau Public HERE.