Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 2933 | 2652 | 2930 | 2841 | 2915 | 2831 |
| Tmin | 2941 | 2656 | 2941 | 2842 | 2919 | 2841 |
| słońce (godz.) | 62 | 57 | 62 | 60 | 124 | 150 |
| opad | 186 | 169 | 187 | 181 | 186 | 180 |
| wilgotność / widzialność | 179 | 160 | 177 | 171 | 173 | 171 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 2930 | 2931 | 2869 | 2960 | 2870 | 2968 |
| Tmin | 2935 | 2936 | 2871 | 2965 | 2879 | 2967 |
| słońce (godz.) | 155 | 124 | 120 | 93 | 60 | 62 |
| opad | 188 | 190 | 210 | 215 | 210 | 217 |
| wilgotność / widzialność | 171 | 175 | 193 | 201 | 197 | 214 |
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. |
