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I want to ask why my weather adjustment percent is 137% if the parameters are:
min hum.: 46%; max. hum.: 77%, temp.: 20,8C and percipitation: 0mm/–
I tried to evaluate and I think it is -31,5% (I used 20,8C/~70F.)

I have never seen other percipitation value except 0.0mm/–.
Humidity and temperature values are changing.
I use Weather API, Budapest Soroksár XXIII.

Usually the adjustment percent remains the same many days and the weather conditions
were changed (sunny and hot days after rainy and cold period or opposite).