Frost/Freeze in Pennington, Minnesota

Frost/Freeze May 20, 2026 · Pennington, Minnesota

What the National Weather Service wrote

Reported low temperatures ranged from 30 to 32 across Pennington County. The lowest reported temperature of 30 was at the Mavie, MN NDAWN at 5:10 AM CST.

The wider storm

Unseasonably cold temperatures developed during the growing season across eastern North Dakota and northwest Minnesota, with hard freeze conditions observed at some locations during the morning hours before sunrise. The 2026 Spring growing season officially began at 12am on May 9.

Source: NOAA Storm Events Database, event 1344409. Narratives are written by the National Weather Service forecast office that issued the report.

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