(for) all of the winter or all through the winter

I have made up three similar sentences below. I am not sure which is correct.

(1) I will be here all of the winter.

(2) I will be here for all of the winter.

(3) I will be here all through the winter.

All of my non-native English speaking friends cannot figure out which one(s) is/are OK because English is not our first language.

Please help me. Thank you very much for all your help.