Since you mentioned getting a reptile starter kit from the pet store, I'll make some assumptions about your setup. Please correct me if I'm wrong...

In those reptile kits, they generally have those cheap dial-type guages. Those can be highly inaccurate, so most opinions here would be to ditch them and go with a digital thermometer/hygrometer combo. You can find one at Walmart for $12 that measures hot side and cool side temps and humidity, all in one device. Another question regarding your existing thermometers, where in the tank do you have them mounted? I see most people sticking them high up on the wall of the tank, which isn't measuring the temps your snake will be exposed to. With the digital one I'm referring to, you put the probe for the hot side under the hide so you know the real temps your bp is feeling...

Also, in those reptile starter kits, they include a lamp for heating the enclosure. The problem with lamps is that they will dry out the air quicker than anything. Also, they don't provide anything to regulate the lamp (thermostat, rheostat or dimmer) so I'm going to assume the lamp is running at 100% while it's on... It is possible that it's getting TOO hot for your snake... You should be providing a warm side and a cool side. The warm side should be 90-92 and the cooler side should be 80-82...

Definitely have a read through the caresheet LGray posted. Good luck with your little one!