Photo by Rob OâNeal/Florida Keys Tourist Development Council. Wherever you are right now, chances are the weather is better here in the Florida Keys. Thatâs true even on a summer day. The hottest itâs ever been in Key West is 97Â° F (36Â° C), and that was way back in 1880. At the peak of summer, the average high is 89Â° F (32Â° C).
To count the days before a date, you can use the TODAY function. Example. The example may be easier to understand if you copy it to a blank worksheet. Create a blank workbook or worksheet. Select the example in the Help topic. Note: Do not select the row or column headers.
Function. Description. DATE function. Returns the serial number of a particular date. DATEDIF function. Calculates the number of days, months, or years between two dates. This function is useful in formulas where you need to calculate an age. DATEVALUE function. Converts a date in the form of text to a serial number. DAY function