386  
WOCN11 CWTO 101455  
YELLOW ADVISORY - FROST  
FOR SOUTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 10:55 A.M. EDT SUNDAY 10 MAY 2026.  
---------------------------------------------------------------------  
YELLOW LEVEL ADVISORY - FROST - FOR:  
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY  
OXFORD - BRANT  
CITY OF HAMILTON  
CALEDON  
HALTON HILLS - MILTON  
YORK - DURHAM  
HURON - PERTH  
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY  
KITCHENER - CAMBRIDGE - REGION OF WATERLOO.  
 
---------------------------------------------------------------------  
IMPACT LEVEL: MODERATE  
FORECAST CONFIDENCE: HIGH  
 
==DISCUSSION==  
 
FROST MAY DAMAGE SOME CROPS IN FROST-PRONE AREAS.  
 
PATCHY FROST IS POSSIBLE LATE TONIGHT INTO EARLY MONDAY MORNING.  
 
FROST IS EXPECTED AGAIN LATE MONDAY NIGHT INTO TUESDAY MORNING OVER  
SOME AREAS.  
 
DAMAGE TO PLANTS, TREES, AND CROPS IS POSSIBLE. COVER UP PLANTS,  
ESPECIALLY THOSE IN FROST-PRONE AREAS.  
 
PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY  
ENVIRONMENT CANADA.  
 
TO REPORT SEVERE WEATHER IN ONTARIO, SEND AN EMAIL TO  
ONSTORM(AT)EC.GC.CA OR POST REPORTS ON X USING (HASH)ONSTORM.  
 
HTTP://WEATHER.GC.CA  
 
END/OSPC  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab CANADA Page
Main Text Page