Countif To Count If Falls With In 90 Days Of Todays Date

What i have is a list of dates in a row. I want to set up a countif formula to count the number of date that fall with in 90 days of todays date. I'm planning on placing todays date in a cell in the upper left hand corner (cell A2) above the list of dates. This way i can just type in todays date and the spreedsheet will count the number of dates, in the list, that fall with in 90 days of the date i type into cell A2