The best time to go to Herkimer is during the late spring, summer, and early fall months, specifically from May through October, for the most pleasant weather and access to outdoor activities.During these months, the weather is generally mild and comfortable, making it ideal for exploring the area's natural attractions. Temperatures are usually warm enough for outdoor adventures without being excessively hot, and rainfall is typically moderate.Families will find the summer months particularly appealing, as this is when the area's most popular activity, crystal mining, is in full swing. Many local mines operate extended hours, and the weather is great for spending a day outdoors digging for Herkimer Diamonds.Couples looking for a scenic and relaxed trip might prefer the late spring or early fall.