If the probability of it raining is 2.5%, what is the probability of it NOT raining for 150 days?

This is what I assumed:

P of rain = p

P of no rain = 1-p

P of no rain for 150 days = (1-p)^150

Therefore, P of no rain for 150 days = (1-0.025)^150 = 0.0224229297 = 2.24%. Is this correct?

Thanks for the help in advance!