World

USA

Lehigh Valley Intl. Airport (117m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax208818912094202420852011
Tmin208418992104202520812021
Duration of sunshine62576260124150
Precipitation187169187181186180
Humidity/Visibility179162180171175161


ParameterJulAugSepOctNovDec
Tmax208420902049212320572125
Tmin209420882054212520682128
Duration of sunshine1551241201246062
Precipitation186190210215210218
Humidity/Visibility171175194203200213


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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