How weather conditions affected recent launches of NASA spacecrafts.?

Answer 1

Heavy winds and rain can push the shuttle or rocket around when it's taking off.

Lightning strikes can damage the spacecraft.

Low clouds and heavy rain can make it difficult or impossible to see the spacecraft during launch, or afterwards. As an example - during the launch of the latest shuttle mission, observers watched to see if pieces of foam shook loose and hit the orbiter. In a heavy rain, that might be impossible to see.