tempc contains wrong temperature values

[ernstkl]

For me, the tempc field contains wrong temperatures (no matter which lookAheadHours value).

E. g. right now, it says "minus 3 deg" for station ENGELBERG, but looking at the predictions for the same station via Homeassistant, I get "plus 2 deg", which is much more reasonable, given I live close by.

I also tried reading the TTT field. It consistently gives the same wrong value (modulo 273,15 of course).

The values would fit to the weather forecast for three or four days into the future though. So something might go wrong in the date / time interval computations.