Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1609 | 1455 | 1611 | 1555 | 1611 | 1557 |
| Tmin | 1612 | 1454 | 1611 | 1559 | 1611 | 1555 |
| słońce (godz.) | 62 | 53 | 49 | 43 | 36 | 39 |
| opad | 64 | 58 | 67 | 62 | 62 | 72 |
| wilgotność / widzialność | 60 | 55 | 58 | 54 | 54 | 52 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1602 | 1612 | 1558 | 1616 | 1560 | 1613 |
| Tmin | 1601 | 1612 | 1558 | 1616 | 1558 | 1613 |
| słońce (godz.) | 25 | 26 | 33 | 40 | 41 | 49 |
| opad | 82 | 62 | 62 | 90 | 122 | 106 |
| wilgotność / widzialność | 42 | 50 | 49 | 76 | 80 | 86 |
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. |
