The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Summerfest 2027 runs three Thursday-Saturday weekends: June 24-26, July 1-3 and July 8-10, 2027, announced July 2026.
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A multi-day lakefront music festival with hundreds of acts on a dozen stages.[1]
Henry Maier Festival Park, Milwaukee, WI, 90 mi north, Chicago. Paid - ticketed.
