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Norteamérica

Helena Regional aeropuerto (1188m)





Number of days available for climatic review

Parámetroenefebmarabrmayjun
Tmáx208418982094202820782026
Tmín208519022096203120822030
Duración del tiempo soleado62576260124120
Precipitación188169188182186181
Humedad/Visibilidad182165183176181176


Parámetrojulagosepoctnovdic
Tmáx209920972051212420642131
Tmín210620982059212420692123
Duración del tiempo soleado1246260936062
Precipitación187190210215210217
Humedad/Visibilidad181181201205205214


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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Helena

Estado actual

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