Heat — Charles Mix, South Dakota

2025-08-08 · Charles Mix, South Dakota

Event narrative

Heat index values peaked as high as 101 degrees near Platte and 3 miles west of Geddes, and 100 degrees 4 miles east-southeast of Wagner.

Wider weather episode

High levels of moisture pooled along and ahead of an outflow boundary across eastern South Dakota and southwest Minnesota with dew point readings into the the upper 70s to lower 80s. With temperatures in the upper 80s to lower 90s, heat index values generally reached the 100 to 110 degree range during the mid afternoon to early evening.

Source: NOAA Storm Events Database, event_id 1290981. Narrative written by the NWS forecast office that issued the report.