ANSWERS

 Okay, here's my list of real words including the word 'snow'.  All of these can be found in the M-W dictionary. Remember, don't count the addition of 's' as a new word or hyphenated words. So, I came up with thirty (30), how about you?

Snowflake

Snowbank

Snowplow

Snowdrop

Snowstorm

Snowbird

Snowdrift

Snowball

Snowman

Snowmen

Snowpile

Snowless

Snowing

Snowed

Snowy

Snowfall

Snowfield 

Snowmaker

Snowmaking

Snowmelt

Snowcap

Snowcapped

Snowcat

Snowpack

Snowpants

Snowscape

Snowshoe

Snowslide

Snowshed

Snowballed

Not good-two words: snow blinded, snow cone, snow cloud, snow globe, snow blinded, snow angel.

Avoid the triskaidekaphobians, today.  They're weird.