Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 617 | 558 | 615 | 599 | 618 | 612 |
| Tmin | 618 | 561 | 615 | 599 | 619 | 613 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 64 | 57 | 62 | 61 | 65 | 73 |
| wilgotność / widzialność | 60 | 54 | 59 | 56 | 60 | 70 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 643 | 650 | 626 | 646 | 623 | 649 |
| Tmin | 646 | 650 | 625 | 643 | 629 | 650 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 97 | 97 | 90 | 93 | 92 | 99 |
| wilgotność / widzialność | 89 | 87 | 83 | 83 | 83 | 88 |
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. |
