What am I?

I'm with you some days, but not on the others. I fall short on you always but mostly in summer. What am I?

I can wave my hands at you, but I never say goodbye. You are always cool when with me, even more so when I am high! What am I?

I can’t go right, I can’t go left. I’m forever stuck going only up and down. What am I?

I begin and have no end. Eventually I will be the ending of all that has begun. What am I?

Riddles and Answers