World

Europe

Piotta (1016m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax876680798569
Tmin997489839081
Duration of sunshine1037890859183
Precipitation157144175173165149
Humidity/Visibility139124134117119129


ParameterJulAugSepOctNovDec
Tmax8410089828089
Tmin8610187797979
Duration of sunshine8510588838086
Precipitation159192199186168168
Humidity/Visibility110131158157128143


Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured.

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