The Old Farmer's Almanac is calling for slightly above average temperatures for Bozeman in December, and slightly above average snowfall. That's also what the Almanac says we can expect for the winter in general. Let it snow, let it snow, let it snow.

DECEMBER 2010: temperature 34 ° (3 ° above avg.); precipitation 2" (0.5" above avg.); Dec 1-9: Snowy periods, turning colder; Dec 10-13: Sunny, cold; Dec 14-17: Snow showers north, heavy snow south; cold; Dec 18-21: Snow to rain north, sunny south; Dec 22-28: Snowy periods, cold; Dec 29-31: Rain, then sunny, mild.