Weather Alerts For Custer, MI

# HEADLINE -------------------- FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM EDT THURSDAY # DETAILS -------------------- WHAT Temperatures as low as 32 will result in frost formation. WHERE Clare, Isabella, Mecosta, Osceola, Lake, Mason, Newaygo, and Oceana Counties. WHEN From 1 AM to 9 AM EDT Thursday. IMPACTS Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. ISSUED AT Wednesday, May 20, 2026 at 1:33 PM EDT ISSUED BY National Weather Service Grand Rapids MI HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Clare, Isabella, Lake, Mason, Mecosta, Newaygo, Oceana, Osceola Including the cities of Big Rapids, Baldwin, Reed City, Clare, Hart, Ludington, Fremont, and Mount Pleasant

Pollen Index: 10.1 Pollen Level: high Predominant Pollen: Oak, Birch and Ash. Concentration of pollen grains in the air for Thursday will be unchanged in the very high range. Constant and seasonally normal weather conditions tend to stabilize pollen concentrations in the outdoor air.