Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1364 | 1232 | 1364 | 1320 | 1364 | 1320 |
| Tmin | 1398 | 1273 | 1405 | 1342 | 1404 | 1360 |
| słońce (godz.) | 5 | 11 | 12 | 2 | 3 | 10 |
| opad | 97 | 91 | 97 | 100 | 99 | 113 |
| wilgotność / widzialność | 16 | 18 | 18 | 11 | 18 | 20 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1366 | 1365 | 1320 | 1364 | 1320 | 1364 |
| Tmin | 1415 | 1419 | 1345 | 1396 | 1364 | 1422 |
| słońce (godz.) | 1 | 1 | 0 | 0 | 0 | 6 |
| opad | 127 | 134 | 110 | 117 | 132 | 140 |
| wilgotność / widzialność | 26 | 30 | 17 | 19 | 22 | 28 |
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. |
Arua