Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1726 | 1560 | 1720 | 1671 | 1709 | 1669 |
| Tmin | 1733 | 1562 | 1730 | 1671 | 1714 | 1669 |
| słońce (godz.) | 93 | 57 | 62 | 60 | 124 | 150 |
| opad | 186 | 169 | 187 | 181 | 186 | 180 |
| wilgotność / widzialność | 184 | 166 | 184 | 177 | 182 | 177 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1724 | 1725 | 1700 | 1753 | 1704 | 1771 |
| Tmin | 1731 | 1726 | 1705 | 1757 | 1705 | 1771 |
| słońce (godz.) | 155 | 124 | 120 | 124 | 90 | 93 |
| opad | 188 | 190 | 210 | 215 | 210 | 217 |
| wilgotność / widzialność | 182 | 184 | 205 | 208 | 204 | 215 |
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. |
