Windfinder has a large weather data archive of wind and weather observations from weather station. Data availability depends on the weather station, for some stations weather data are available since 1999. You can purchase these data in raw or graphical form depending on your needs. Please note that these data are based on observations of more than 18000 weather stations.
The price for weather data depends on three factors: the number of weather stations, the number of desired weather parameters and the amount of data. To give you a first offer we created the calculator.