The best time to go to Jefferson, New Hampshire, depends on whether you're seeking winter sports or summer outdoor activities.For winter sports enthusiasts, the period from December through March offers the best conditions. During these months, the area typically receives ample snowfall, ensuring that activities like skiing, snowboarding, and snowmobiling are in full swing. This is when the local ski areas and trails are at their peak.If you're more interested in hiking, fishing, or enjoying the natural beauty of the White Mountains, the summer months of June, July, and August are ideal. The weather is generally warm and pleasant, superb for exploring the numerous trails, lakes, and scenic drives.