Weather

What’s the difference between rain, sleet and snow?

When it comes to precipitation, it’s
all about temperature. When the
air is suffi ciently saturated, water
vapour begins to form clouds
around ice, salt or other cloud seeds.
If saturation continues, water
droplets grow and merge until
they become heavy enough to fall
as rain. Snow forms when the air is
cold enough to freeze supercooled
water droplets – lower than -31
degrees Celsius (-34 degrees
Fahrenheit) – then falls. Sleet is
somewhere in between: it starts
as snow but passes through a
layer of warmer air before hitting
the ground, resulting in some
snow melting.

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