Reading through my newly acquired statistics book, I came across the following question:

If a weather forecaster predicts 25% chance of rain for Saturday, and 25% for Sunday as well, does that mean there's a 50% chance of rain over the weekend? Yes or No and explain your answer.

My logic tells me we should take the average, which is 25%, so there should be a 25% chance of rain for the entire weekend. Am i right?