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North America

Allen Army Airfield (391m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax545483548510508499
Tmin547488550509509501
Duration of sunshine000000
Precipitation125114127127127123
Humidity/Visibility10899116116107107


ParameterJulAugSepOctNovDec
Tmax549555560572564569
Tmin547555558577561567
Duration of sunshine000000
Precipitation131158153155152158
Humidity/Visibility116135143143146142


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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Fort Greely

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