What is JRTC like around March?

Humid.

Focus on the training and make the most of it.

Did 33 rotations there; it sucks at all times. Be prepared for biting bugs and sweating your ass off.

Hot and humid, but also can have some drastic temp swings, I've seen hypothermia cases in April from working all day in the heat and then the temp dipping at night to 50.