Some basics to look for include long thermal pants and shirts, which are lightweight while still providing layers of warming insulation.
The final thing to prepare for is attire, which will largely hinge on the location of your camping trip, the forecast, and the environment, but one surefire rule of thumb is to avoid cotton as much as possible, since this tends to absorb moisture without sufficient insulation against the cold. Instead, stick with synthetic or wool fabrics. Some basics to look for include long thermal pants and shirts, which are lightweight while still providing layers of warming insulation. Bring a couple sets and keep a pair specifically for sleeping. Other necessities are thick socks, a puffy jacket, and gloves. Hats and scarves are optional, but wouldn’t hurt to have in the car for backup. In general, pack your clothes with convenience and layering in mind. When out hiking during the day, when you’re most likely to be warm, your best bets are loose-fitting hiking pants, hiking shoes, a couple pairs of T-shirts or athletic long-sleeves, and a waterproof jacket in case of rain.