 The driest month of the year is April with an average of of precipitation over 8.6 days.In Grimentz about 166 or (41.1%) of the population have completed non-mandatory upper secondary education, and 29 or (7.2%) have completed additional higher education (either University or a "Fachhochschule").Of the 29 who completed tertiary schooling, 48.3% were Swiss men, 41.4% were Swiss women.