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Tarnów (209m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax701631705679701678
Tmin705637704680705683
Duration of sunshine7068908311091
Precipitation686615680657684660
Humidity/Visibility837585798482


ParameterJulAugSepOctNovDec
Tmax704732704720676705
Tmin707733710715686704
Duration of sunshine100130116936750
Precipitation684715692705659684
Humidity/Visibility90105102978287


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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