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Białystok (151m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax744671744719742719
Tmin744672742719743720
Duration of sunshine8396126125148140
Precipitation155140155151161150
Humidity/Visibility154139153148151148


ParameterJulAugSepOctNovDec
Tmax739741720736718742
Tmin744744719737717743
Duration of sunshine1511511281186869
Precipitation155157152153150155
Humidity/Visibility152150147148147152


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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