i am convinced that night time temperatures are more important than daytime concerning when fish spawn or become more active, especially in shallow water depths...daytime temps can get into the 70s, but if the night time temps are still in the 30-40 range the fish won't be as active...but if the night time temps are in the upper 40s to 50s,,,and daytime in the 70s...this will trigger the fish to spawn and become more active..of course this is just a theory...not proven but observed by many days on the water..so i get excited when those warm days and cool, not cold nights get here, because i know the action is going to be great..