Automatic watering system | Rule is not working

[rossko57]

It would be really helpful to see the events.log entry for your Item changing.
Also, the output (if any) from your logInfo() in your openhab.log

I would suspect a UoM problem, but there is not enough info given to tell

[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" )