Unexpected value returned from rule with '>'

[rossko57]

@stfn82

Humidity outside is 93 %

There’s the clue. You didn’t ask for a % sign in your logInfo - it has come from the Item WeatherAndForecastCurrentHumidity
That Item has Units of Measurement.
(check your Item definitions)
While your gHumidityBadkamer does not have any units.
So a comparison will be apples and oranges, not like for like.

[SOLVED] Comparaison with OpenWeatherMap temperature

Your Item has UoM, Units of Measurement. So it’s effectively 15 °C not just 15, and comparing with just 12 is apples-and-oranges. This is one of the clumsier parts of UoM. You can either extract just-the-number or compare with a temperature. if( (localHourlyForecast12Temperature.state as QuantityType<Number>).intValue <= 12 ) if( localHourlyForecast12Temperature.state <= 12 | "°C" )