Write an abbreviation for the following: here is the average annual precipitation for five states. the precipitation is shown in inches. write an abbreviation to remember these five states in order from the lowest annual precipitation to the highest annual precipitation. oklahoma 35.85 colorado 15.81 hawaii 18.29 new york 38.60 illinois 36.27

First, let's list the states in order from least to most precipitation:

Colorado 15.81
Hawaii 18.29
Oklahoma 35.85 
Illinois 36.27
New York 38.60

Our mnemonic device (a technique to help you remember something) will be an acronym with the following order of letters: CHOIN.

One option is to simply remember the acronym as a word: "choin"

If you prefer to tie the acronym to a phrase, you could say:
Cats Hate Owners Interrupting Naps