When should I start wearing long sleeves?

pu1. He's wearing it now

2020-09-10

OK

pu2. I wear it because it's cold

2020-09-10

OK

pu3. I wear a sweatshirt, too

2020-09-10

OK

pu4. I think it's a little cold in the evening, so I think it'll be okay to wear it when you go out in the evening. If I'm going to wear it all day, maybe in two weeks?

2020-09-11

OK

pu5. It's still possible!

2020-09-13

OK

pu6. It's chilly in the morning and evening, so I think a thin one is possible

2020-09-13

OK

pu7. Can I wear it now?

2020-09-19

OK