Excessive Heat — St. Mary's, Maryland

2025-06-23 · St. Mary's, Maryland

Event narrative

The ASOS at Patuxent NAS, KNHK, observed a peak heat index of 111F. The AWOS at Webster Airfield, KNUI, observed a peak heat index of 110F.

Wider weather episode

A large area of high pressure across the region brought extreme heat and humidity to the Mid-Atlantic.

Source: NOAA Storm Events Database, event_id 1259475. Narrative written by the NWS forecast office that issued the report.