For those of you intensely focused on or fascinated by weather data we came across this interesting paper submitted to Climate of the Past An Interactive Open Access Journal of the European Geosciences Union

The paper presents an open-access database of grape harvest dates for climate research.

As of June 2011, this GHD dataset comprises 380 series mainly from France (93% of the data) as
well as series from Switzerland, Italy, Spain and Luxemburg. The series have variable length (from 1 to 479 data, mean length of 45 data) and contain gaps of variable sizes (mean ratio of observations/series length of 0.74). The longest and most complete ones are from Burgundy, Switzerland, Southern Rhˆone valley, Jura and Ile-de-France. The most ancient harvest date of the dataset is in 1354 in Burgundy.