There are some fixes in this plasmoid after long time. https://github.com/kotelnik/plasma-applet-weather-widget/commit/415ba09ed825f18699a5920e59cf05508b1263d5#diff-dcd6c64f90682b9fc400f00d2292c6d6
Thanks, fixed in git now (commit 25f2ba529d272b60a45529dbbed66fdfe6b84133).