Excessive Heat in Iowa, Wisconsin

Excessive Heat June 30, 2026 · Iowa, Wisconsin

What the National Weather Service wrote

Peak heat index:

106F Barneveld.

The wider storm

A hot and humid air mass setup over southern Wisconsin in late June. Low temperatures struggled to get into the 70s while high temperatures in the 90s combined with high dew points led to heat indices reaching the 105F-110F range.

Source: NOAA Storm Events Database, event 1353862. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.