Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1395 | 1260 | 1395 | 1365 | 1416 | 1377 |
| Tmin | 1455 | 1316 | 1454 | 1423 | 1483 | 1436 |
| słońce (godz.) | 59 | 55 | 58 | 67 | 84 | 82 |
| opad | 64 | 57 | 62 | 79 | 94 | 93 |
| wilgotność / widzialność | 60 | 56 | 61 | 72 | 90 | 86 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1420 | 1420 | 1369 | 1422 | 1376 | 1423 |
| Tmin | 1475 | 1477 | 1424 | 1478 | 1435 | 1484 |
| słońce (godz.) | 79 | 82 | 75 | 79 | 83 | 87 |
| opad | 93 | 102 | 94 | 91 | 90 | 93 |
| wilgotność / widzialność | 89 | 87 | 77 | 86 | 87 | 91 |
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. |
