Lettuce doesn't like to sprout in warm soil. Most likely, same for the other mentioned crops. But, they should sprout just fine in the house. One old timer's trick for sprouting those cold weather seeds outdoors in hot weather is to plant them, and then dump some ice cubes over the row, cover the row with a board to keep the sun off the row for a few days. Be sure to check daily for sprouts, then you can uncover the row.