Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 887 | 801 | 890 | 859 | 886 | 863 |
| Tmin | 892 | 806 | 891 | 862 | 893 | 866 |
| słońce (godz.) | 87 | 76 | 85 | 83 | 90 | 81 |
| opad | 657 | 598 | 653 | 635 | 651 | 632 |
| wilgotność / widzialność | 176 | 162 | 180 | 173 | 177 | 167 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 885 | 888 | 880 | 906 | 882 | 915 |
| Tmin | 887 | 889 | 889 | 910 | 886 | 918 |
| słońce (godz.) | 79 | 81 | 84 | 79 | 109 | 107 |
| opad | 659 | 657 | 662 | 685 | 668 | 227 |
| wilgotność / widzialność | 170 | 168 | 188 | 193 | 187 | 197 |
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. |
