świat

Ameryka Północna

Port lotniczy Waszyngton Ronalda Reagana





Number of days available for climatic review

parametrstylutmarkwimajcze
Tmax219019832186212321822115
Tmin219219862177209421582093
słońce (godz.)1241149390155180
opad186169186180186179
wilgotność / widzialność174152168161163158


parametrlipsiewrzpaźlisgru
Tmax217521862150221921492218
Tmin216121622123222221522217
słońce (godz.)186155150155120124
opad187189210215210217
wilgotność / widzialność156165188197197210


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.

prognoza

Arlington

pogoda bieżąca

zdjęcie satelitarne

zdjęcie satelitarne Wirginia!