Plants wont Emerge from Soil

• Hi so I'm very new to this. I'm doing an outdoor grow. I've germinated 5 seeds in paper towel, and planted them around one inch deep in germinating soil in just a red plastic cup outside. I've been very unlucky with the weather this week. Its only been a high of like 15C each day and a low of 5C, when it should be a lot warmer. The sprouts on the seeds were also very small too, like maybe almost a centimeter. So I planted them friday afternoon, and now its wednesday afternoon. Its been 5 days and nothing has emerged. I've only sprinkled water on the soil like 3 times. I only did it when the soil was dry on top. I did poke holes on the bottom of the cup to allow for drainage. I'm guessing that it is too cold for them to grow, I put the seeds in too deep, and/or the sprouts should be longer.
  
  Please any suggestions?

I'd make sure the soil is saturated as well, not just a little water sprinkled on top. It's ok to let it dry out a little, but it should all be saturated when you water.