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North America

Grande Prairie Airport (669m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax152139153150154148
Tmin155141154149155149
Duration of sunshine000000
Precipitation125117127155155152
Humidity/Visibility154138153148153147


ParameterJulAugSepOctNovDec
Tmax150152174170174183
Tmin152154177179177185
Duration of sunshine000000
Precipitation157157150154152157
Humidity/Visibility153152175178177184


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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