 The month with the most days of precipitation is May, with an average of 15.5, but with only of rain or snow.The driest month of the year is October with an average of of precipitation over 9 days.In Jaun about 172 or (24.8%) of the population have completed non-mandatory upper secondary education, and 30 or (4.3%) have completed additional higher education (either university or a "Fachhochschule").