Mine is 4 and flat out refuses! I'm fairly laid back I'd say about a lot of things with her and it's only over last couple of weeks I've tried to say she should wear a coat. She won't be persuaded. We went the whole of today not wearing one then only at about 5 o clock did she say she wanted it on and then didn't do it up!
Why do you feel you know more about her temperature needs than she does?
Unless you are unable to carry a coat for her in case she needs it - and 4 year olds coats are pretty small and light - just carry a coat, let her know you've got it if she needs it, but otherwise respect that she knows if she's cold or not!
My now 4.5 year old never wore a coat. Rarely wore shoes and was well known on the school run for running in the snow barefoot. She never had a cold or other virus so I just gave up and saved myself the stress of the arguments. That was when she was two and nothing’s really changed. Some people just don’t like wearing coats I guess. I don’t get it, I hate being cold and wear coats in the summer...
Several of mine rarely wore coats. I rarely wear a coat despite having a wardrobe full of them. I can’t bear the suffocating, closed in feeling of most coats. Too heavy snd restrictive. If they’re cold they’ll put a coat on. Being cold rarely does much harm.