I pasted this from Don Vialoux's blog.

Seasonal influences for gold have a brief period of weakness followed by a revival from the second half of November to early February.

Silver also has favourable seasonal influences from the second half of November to early February. Silver tends to outperform gold during this period.

Charts courtesy of SeasonalCharts.com www.seasonalcharts.com

Trigger for weakness in gold and other commodities yesterday was strength in the U.S. Dollar. Short term momentum indicators for the Dollar turned positive. Upside potential is to the Dollar’s 50 day moving average currently at 76.95. Intermediate trend remains down.