This is both completely true and completely nonsense in the context. If the numbers are independent, no matter what the distribution, the odds of the nth measu

This is both completely true and completely nonsense in the context. If the numbers are independent, no matter what the distribution, the odds of the nth measurement being a record setter is 1/n. And as above, if you've measured 100 Novembers, the odds of the 100th being the record wettest are 1/100.