I have a new weathr station and can not get the outside temp. to display what can I do?

I assume it is a wireless station. If so, there is a procedure to go through to get the temperature sender and the base station to sync up and work. You need to check your owners manual to get the exact procedure for your unit. On my station, I have to remove the battery from the base station, let it power up and within 5 minutes, install the battery in the remote station(s) (temperature, rain gauge, wind gauge, etc.). Also, you must keep the remote station within a certain range for the base to get a good signal. Probably 25 feet, but the owners manual will have the right number. Also, use new batteries.