Three year old tantrums: what is normal
I'd say by three tantrums should be lessening. Our three year old seems to like certain things just so and usually what triggers an upset is siblings teasing or something in his day or routine being off. Or him wanting his own way. We really try to divert his attention if we sense a full tantrum coming on. Sometimes it works and sometimes it doesn't. I think this will vary greatly from child to child and from home to home.