Accuracy of location on weather app S9

[HM75]

The built in clock/Weather app on my S9 is not as accurate as the one that was on my previous phone (S6+) it shows that i am in a town that is 5 miles away.

When I try to add my location manually it is not on the list of towns

[BandOfBrothers]

Do you have high accuracy turned On to give the phone the best chance for location based apps to work as accurately as possible. 

[HM75]

Yes, it is switched on.

I think it's the weather channel app that is not as good as the Accuweather app was on the older phones