The raw data is in the attribute observation. Right now it is "LSZH 231420Z 28008KT 250V320 9999 FEW075 SCT300 24/05 Q1021 NOSIG".
This is all information we have and I cannot see any weather condition in it.
If you click the example buttons they will show example codes and sure enough they all give a weather condition. However, when decoding your sample, no condition is displayed.