Help with Temps

[Chris04]

Ok, I'm quite a noob, as some may be able to tell, and just got my first bp a couple of months ago. My problem is with the temps. During the day, with both the UTH and lamp on (bulb is 60 watt) my top temp only reaches 83 on the warm side. I have heard that 60 watt is enough, but it never seem to get warm enough in there. Humidity stays normal, hovering about 65% and 70 to 80% on a shed. Any suggestions on how to raise the heat?

Thanks.