Monde

Europe

Riazan (158m)





Number of days available for climatic review

Paramètrejanfevmaravrmaijuin
Tmax119107119139150144
Tmin119106119141148143
Durée d’insolation000000
Précipitation125116130148158149
Humidité/Visibilité122110120142150145


Paramètrejuilletaoûtsepoctnovdéc
Tmax147146143143142147
Tmin140143142144144145
Durée d’insolation000000
Précipitation152156155155153160
Humidité/Visibilité147148144146146152


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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