Key Facts The Atmosphere

  What size are raindrops?
The average raindrop has a million times more water than the average cloud droplet. Most raindrops are about 1 mm (0.05 in) in diameter. Drops larger than 5 mm (0.2 in) break up on their way to the ground.

  Rain statistics
Dust storms reduce visibility The highest number of rainy days in one year are 350 at Mount Wai-'ale-'ale, Hawaii.

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