How much does the average rain drop weigh?

The weight of a raindrop depends heavily on the type of weather but averages about 0.0002 kilograms (200 mg). See bibliographic entries for the mass of a raindrop on HyperTextbook.com.

For a summary table of the typical raindrop sizes, click here.

The speed of a falling raindrop depends on the size and weight of the raindrop how fast it falls: the heavier, the faster.

At sea level, a large raindrop about 5 millimeters across (house-fly size) falls at the rate of 9 meters per second (20 miles per hour). Drizzle drops (less than 0.5 mm across, i.e., salt-grain size) fall at 2 meters per second (4.5 mph).

Get more rain and raindrop facts and trivia by reading this USA Today article.

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