snowy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Abounding in or covered with snow.
• adjective Subject to snow.
• adjective Resembling or suggesting snow, especially in whiteness.

from The Century Dictionary.

• Abounding with snow; covered with snow.
• White like snow; niveous.
• White; pure; spotless; unblemished.

from the GNU version of the Collaborative International Dictionary of English.

• adjective White like snow.
• adjective Abounding with snow; covered with snow.
• adjective Fig.: Pure; unblemished; unstained; spotless.
• adjective (Zoöl.) a white heron, or egret (Ardea candidissima), found in the Southern United States, and southward to Chile; -- called also plume bird.
• adjective (Zoöl.) the collared lemming (Cuniculus torquatus), which turns white in winter.
• adjective (Zoöl.) a large arctic owl (Nyctea Scandiaca, or N. nivea) common all over the northern parts of the United States and Europe in winter time. Its plumage is sometimes nearly pure white, but it is usually more or less marked with blackish spots. Called also white owl.
• adjective (Zoöl.) a small plover (Ægialitis nivosa) of the western parts of the United States and Mexico. It is light gray above, with the under parts and portions of the head white.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Covered with snow.
• adjective Resembling snow.
• adjective When snow is falling.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective of the white color of snow
• adjective covered with snow
• adjective marked by the presence of snow