Disc brakes better for rainy days? Are disc brakes more effective on rainy weather? I had a close call riding my road bike during a morning rain and almost collided with a parked car. My road bike is steel and has tektro branded caliper brakes. Should I get a disc brake commuter bike?
Disc brakes are generally more effective in the rain than rim brakes, but using rim brakes properly in the rain has served people well for many years. 

You need to feather the brakes to remove the water+crud from the rims. Softer brake pad compounds can also help you brake more easily. Also, having good quality brakes that are well adjusted is always a good thing too. Remember that you also need to brake earilier in the rain, regardless of the type of brake, and be more careful than in the dry. 

If you have small hands, make sure also the small hand inserts are in for your brake levers (if it has them).