Weather Alerts For Port Huron, MI

# HEADLINE -------------------- FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT SATURDAY # DETAILS -------------------- WHAT Sub-freezing temperatures as low as 26 expected. WHERE All of southeast Michigan. WHEN Until 9 AM EDT Saturday. IMPACTS Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. ISSUED AT Friday, May 1, 2026 at 11:39 PM EDT ISSUED BY National Weather Service Detroit/Pontiac MI HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Lapeer, Lenawee, Bay, Genesee, Huron, Livingston, Macomb, Midland, Monroe, Oakland, Saginaw, Sanilac, Shiawassee, St. Clair, Tuscola, Washtenaw, Wayne Including the cities of Detroit, Flint, Howell, Pontiac, Ann Arbor, Warren, Lapeer, Adrian, Caro, Bad Axe, Bay City, Saginaw, Owosso, Port Huron, Sandusky, Monroe, and Midland

Pollen Index: 9.5 Pollen Level: medium-high Predominant Pollen: Birch, Maple and Poplar/Aspen/Cottonwood. Pollen concentrations for Saturday will be on the increase and extend further into the very high range. This rise is a result of seasonally normal weather conditions which are favorable for the production and dispersal of pollen.