hey there, i have a panther chameleon, so the temp and humidity requirements vary by chameleon species (but the temps that i have are okay for panthers and veileds)
i currently keep my cham outside

and i live in So Cal
the temps during the day should be 65-85 degrees, any hotter , make sure to have extra mistings and a constant drip system.
at night should be around the 60's, and i hear that they can tolerate night temps 50 and above, but i rather keep them 55 and up just in case.
i do not use anything for heat at night. i think the temp drop is good for them.
and the sunlight is just awsome for them, but let htem have some shady area to cool down.
because of Cali's weird weather, i would only yake my cham temporarly inside when it is really cold, and/or raining Bad.
if its too cloudy but temps are good, i provide an outside heat lamp for basking and thats it.
hope this helps