I noticed that "Nearest weather stations" panel in case of missing station data could show values from the observations that are several days old.
For example, the Riga weather station has no data for the temperature for several days, but webpage shows temperature value as "1h ago" (see attached screenshot). The data of this weather station data some other parameters (e.g. wind speed) is current and valid, but for temperature it is not (see attached screenshot of time graphs).
Best regards -