We went to Alaska in July 2008 and hit an uncharactrristically cold period. The day we were in Skagway it was 45 degrees with 40 mile per hour winds. It only hit highs in the 50's in Juneau and Ketchikan and rained/misted both days. We had all packed for layering and had sweat shirts, rain-proof outer wear, etc. I'm NEVER cold and I froze most of the time. So pack to layer and be prepared to spend the money for winter-type gear along the way if needed.