"Weather forecasters are known to implement “wet bias,” a damage-control tactic that increases forecast usefulness by exaggerating and overestimating the probability of precipitation. The Weather Channel has admitted to employing wet bias during low rain probability, reporting a 20% probability of rain for a probability of only 5%.
In Nate Silver’s 2021 book, The Signal and the Noise, forecasters use wet bias to compensate for inaccurate perceptions of probabilities from the general public, as many viewers become angry when it rains after the forecast reports a low chance of precipitation."