Fireworks might not light up the sky if the weather is bad Fireworks are the iconic way to end the day at Walt Disney World but there is one thing that you need to keep in mind. The show will be delayed or even canceled if the weather is bad. Rain will not be the reason, but if lightning or high winds are in the area the show might not go on. There could be a delay first, and if the weather doesn’t look like it will clear then there could be a cancellation announcement.