Weather Alerts For Henry, SD

# HEADLINE -------------------- FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 8 AM CDT WEDNESDAY # DETAILS -------------------- WHAT Sub-freezing temperatures from 28 to 32 degrees expected. WHERE Portions of central, north central, and northeast South Dakota. WHEN From 11 PM this evening to 8 AM CDT Wednesday. IMPACTS Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. ISSUED AT Tuesday, May 19, 2026 at 7:22 AM CDT ISSUED BY National Weather Service Aberdeen SD HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Hamlin, Brown, Buffalo, Clark, Codington, Day, Deuel, Faulk, Grant, Hand, Hyde, Marshall, Roberts, Spink Including the cities of Britton, Sisseton, Redfield, Faulkton, Clark, Watertown, Milbank, Miller, Highmore, Aberdeen, Fort Thompson, Hayti, Clear Lake, and Webster

Pollen Index: 9.2 Pollen Level: medium-high Predominant Pollen: Birch, Maple and Ash. Based on past pollen counts and expected weather conditions, pollen levels for Wednesday will remain stable in the high range. Pollen producing plants are at a relatively steady level of pollination at this time.