Hi there! I understand your Yahoo Weather app isn't showing the correct weather info for your area on your iPhone with iOS 18.7. Let's get to the bottom of this together.

First, can you share if the app is showing the wrong location entirely, or is it the weather data like temperature or conditions that seem off for the right location? Also, have you tried adding your location manually in the app?

In the meantime, here's a straightforward way to fix location-related issues step-by-step:

1. Check Location Permissions
- Go to your iPhone's Settings > Privacy & Security > Location Services.
- Make sure Location Services is turned ON.
- Scroll down to Yahoo Weather and set it to While Using the App or Always to allow accurate location detection.

2. Manually Set Your Location in Yahoo Weather
- Open the Yahoo Weather app.
- Tap the Settings (gear icon), then select Edit Locations.
- Add your city or ZIP code manually and select it as your primary location to override any incorrect auto-location.

3. Clear Outdated Cached Data
- Sometimes cached info causes glitches. To clear cache on iOS apps, the best approach is to delete the Yahoo Weather app and reinstall it from the App Store.

4. Ensure Your Device’s Location Services Are Active
- Apart from app settings, confirm your iPhone’s GPS/location system is functioning. Try opening Apple Maps or another weather app to verify location accuracy.

If you’ve done these and it’s still off, it could be a data source or regional coverage issue, but let me know first what you observe after these checks. I’m here to guide you through the next steps.

Feel free to share what you’ve already tried or what’s happening exactly!