Why is my iPhone showing the wrong current temperature?

My iPhone says it is 69 F in Port Townsend WA. My husbands says it’s 79 F. Same town, same scale, his is correct. I tried deleting and re-adding the town. I tried turning off my iPhone. Still Wong current temp, predicted high-low. How to reset or recalibrate?

[Re-Titled by Moderator]