Detecting the day's temperature is one of the important factors of weather forecasting is True.
Weather forecasting is said to be the process of predicting the future state of the atmosphere. This includes predicting the temperature, precipitation, wind, and other weather conditions.
In order to make accurate forecasts, meteorologists need to know the current state of the atmosphere. This includes the temperature, pressure, humidity, and wind speed and direction.
So, one of the most important factors in weather forecasting is the temperature. This is because temperature is a key indicator of the amount of energy in the atmosphere.