The best time to go to Bethany, Illinois, is during the late spring, summer, and early autumn months, particularly from May to October, when the weather is most pleasant for outdoor activities.May and June offer comfortable temperatures, usually in the low to mid-20s Celsius, making it ideal for enjoying the local parks or any outdoor events. The countryside is lush and green during this period, which is superb for those who appreciate scenic drives or gentle walks.July and August are the warmest months, with temperatures often reaching the high 20s or even low 30s Celsius. This is prime time for lake activities at nearby Lake Shelbyville, such as boating or fishing. Families travelling with children will find these months superb for making the most of the longer daylight hours and warmer water.September and October bring cooler, crisp air and the beautiful colours of autumn. Temperatures typically range from the mid-teens to low 20s Celsius.