The best time to go to Trevor, Wisconsin, for comfortable weather and outdoor activities is during the summer months, specifically from June to August.During this period, you'll experience warm temperatures, typically ranging from the mid-70s to low 80s Fahrenheit, with pleasant evenings. This makes it ideal for enjoying Trevor's primary draw, its natural surroundings, like exploring the extensive trails at the nearby New Munster Wildlife Area or spending time by the numerous lakes in the region, such as Lake Geneva, just a short drive away.For those interested in fishing, boating, or simply relaxing by the water, the summer offers the best conditions.