Hardly surprising - it’s winter.
Funnily enough my panel applet said it was 4°C for some weeks now. This surprised me because the ice and snow outside, the freezing canal nearby and my chattering teeth when I was walking the dog definitely felt a lot lot colder.
It looked like the 4°C in the applet were stuck somehow.
It struck me yesterday: I had set the applet to Berlin Tempelhof airport (since it was closest to me), but as it was closed down a few weeks ago, the 4°C stuck. Now that I set it to Tegel, it’s all “good” again: It’s just f.cking cold.