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.
To help you perform complex date and time calculations, Excel includes many built-in date and time functions. The TODAY function returns the serial number of today's date based on your system clock and does not include the time. The NOW function returns the serial number of today's date and includes the time.o help you perform complex date and time calculations, Excel includes many built-in date and time functions. The TODAY function returns the serial number of today's date based on your system clock and does not include the time. The NOW function returns the serial number of today's date and includes the time.