"What is the temperature? I think that it is too hot."
Translation:Cad é an teocht? Ceapaim go bhfuil sé ró-the.
It's always worth searching the other comments because we all tend to ask the same questions! :-) The answer is at : https://forum.duolingo.com/comment/12826749/What-is-the-temperature-tonight
If I understand correctly, in a question, it's masculine by default.