World

North America

Ralph Wien Memorial Airport





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax199418051997193019901935
Tmin199018141994192419871934
Duration of sunshine000000
Precipitation151129147144144144
Humidity/Visibility9795107110106112


ParameterJulAugSepOctNovDec
Tmax199720031942200219442000
Tmin200620091946199519361998
Duration of sunshine000000
Precipitation160198211204199181
Humidity/Visibility122151149145147130


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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