Misdemeanors can carry a sentence of up to 90 days in jail and/or a $1000 fine. See RCW 9A.020.021(3). Certain misdemeanor's carry a mandatory minimum sentence.
One year in jail and a $5,000 fine for a gross misdememeanor. For a "simple" misdemeanor, 90 days in jail and a $1,000 fine. Remember that these are maximum punishments. Certain misdemeanor crimes also have minimum punishments so you should consult an attorney.