What does the precipitation probability in weather forecast mean?

Probability refers to the probability that it will rain in a certain area today. The probability of forecasting time and rainfall in the area is this number. It can also be understood that the prediction accuracy of a given time and area is this number.

Probability is a mathematical term, and its intuitive meaning refers to the possibility of something happening. The forecast published in the form of probability is called probability forecast, which originated from the United States in 1966.

Popular understanding: under certain conditions (temperature, air pressure, humidity, etc. ), the probability of precipitation in history is 30%. Knowing the forecast of precipitation probability, we can take measures against the weather that may rain and reduce the inconvenience of life.