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North America

Dane County Regional Airport (264m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax208318932095203020832025
Tmin209218922102203220802029
Duration of sunshine93869360124150
Precipitation186169187181186180
Humidity/Visibility176161176171173170


ParameterJulAugSepOctNovDec
Tmax209120962054212420622128
Tmin210120972053212420662131
Duration of sunshine1551241201249093
Precipitation188190210215210217
Humidity/Visibility171175194202205215


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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