Excessive Heat in Fillmore, Minnesota

Excessive Heat June 29, 2026 · Fillmore, Minnesota

What the National Weather Service wrote

Extreme heat moved into the region for the afternoon and early evening hours on June 29th bringing heat indices of 103 to 109 degrees across Fillmore County. The highest heat index of 109 degrees was reported in Preston.

The wider storm

On June 29th, a favorable synoptic weather pattern brought extreme heat to southeast Minnesota as ample moisture resulted in remarkably high dewpoints. Consequently, heat indices soared well above 100 degrees with numerous locations seeing heat indices of 105 to 115 degrees.

Source: NOAA Storm Events Database, event 1355138. Narratives are written by the National Weather Service forecast office that issued the report.

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