One of the first questions you ask when shooting on a snowy day is "what color is my snow?" When things are supposed to be all white, that's precisely the time you should worry about color.
My snow is gray -- This is a common problem. Your camera is designed to average all the bright and dark and expose for 18 percent gray. That works for most shots where you have a wide range of light to dark colors. When your scene is all white, it confuses your camera, and your photos show your whites as gray. To make sure you get true whites, overexpose your image by one to two stops. In many cameras, you can select +1 on your exposure compensation dial.
My snow is blue -- Sometimes your camera will record snow with a slight blue tint. If you shoot in raw format, this is usually not an issue, but if you are shooting in jpg format, you might find that you need to adjust your white balance settings. Try daylight or shade settings, but for best results, use a custom white balance.
My snow is white -- Excellent. You've captured the perfect blanket of white. Now it's time to find some bright colors to contrast against the snow. Color will add more life to your photos, as well as provide ingredients for powerful composition.
Other things to remember.
Keep your battery alive -- Batteries die quickly in colder weather. Keep spare batteries in your pockets or near to your body where they will be warmer. Swap them out frequently to keep them 'still going.'
Go for Golden -- Here's another color tip: Early in the morning and late afternoon are the best times to shoot because the angle of the sun casts longer shadows and adds more contrast than in the middle of the day.
Chances are on most snow days, you will look out your window to admire the pure blanket of white. Who knew that once you grabbed your camera, there would be so many other colors to consider?