Weather Alerts For Ortonville, MI

# HEADLINE -------------------- FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM EDT MONDAY # DETAILS -------------------- WHAT Sub-freezing temperatures as low as 23 expected. WHERE A portion of southeast Michigan. WHEN From 11 PM this evening to 11 AM EDT Monday. IMPACTS Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. ISSUED AT Sunday, April 19, 2026 at 12:02 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 -------------------- Macomb, Genesee, Lapeer, Lenawee, Livingston, Monroe, Oakland, Saginaw, Shiawassee, St. Clair, Washtenaw, Wayne Including the cities of Warren, Detroit, Adrian, Ann Arbor, Monroe, Flint, Port Huron, Saginaw, Owosso, Howell, Pontiac, and Lapeer

Pollen Index: 10.8 Pollen Level: high Predominant Pollen: Maple, Cedar/Juniper and Poplar/Aspen/Cottonwood. Pollen concentrations for Monday will be falling but will remain in the high range. This lower level is caused by falling temperatures, higher dew points and lack of strong winds.