Storms west of Champaign
The August 10, 2020 derecho crossed the whole county, with 60 mph at Willard Airport and 64 mph at Bloomington airport to the west, so the whole area west of Champaign saw strong wind that day. Champaign County has logged 87 tornadoes since 1950, according to the National Weather Service in Lincoln. Hail averages about two days a year across central Illinois.
A wide, new TPO roof on a strip center can lose its perimeter edge in high wind even when the field of the roof is fine. After a storm, a contractor can document damage with photos to support a claim. Your insurer decides coverage, and contractors cannot pay or rebate your deductible under Illinois law. See storm and hail damage.
For budgeting, the cost guide lists typical national installed ranges by system, such as TPO at $4 to $14 per sq ft and metal at $7 to $15 per sq ft (Fixr Jan 2026, ServiceTitan Feb 2026). Mahomet bids vary.