Mundo

Norteamérica

Nacional Ronald Reagan de Washington aeropuerto





Number of days available for climatic review

Parámetroenefebmarabrmayjun
Tmáx219019832186212321822115
Tmín219219862177209421582093
Duración del tiempo soleado1241149390155180
Precipitación186169186180186179
Humedad/Visibilidad174152168161163158


Parámetrojulagosepoctnovdic
Tmáx217521862150221921492218
Tmín216121622123222221522217
Duración del tiempo soleado186155150155120124
Precipitación187189210215210217
Humedad/Visibilidad156165188197197210


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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Arlington

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