World

North America

Smithers (517m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax185167183178185178
Tmin186168186179186179
Duration of sunshine176155176166181171
Precipitation188170187185187182
Humidity/Visibility184165184177183177


ParameterJulAugSepOctNovDec
Tmax180186205210207214
Tmin185187209212209214
Duration of sunshine173176196177166163
Precipitation187190210215210221
Humidity/Visibility183183205209205214


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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Smithers

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