Weather Alerts For New Canaan, CT
Frost Advisory
-# HEADLINE -------------------- FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT MONDAY FREEZE WARNING IN EFFECT FROM MIDNIGHT MONDAY NIGHT TO 9 AM EDT TUESDAY # DETAILS -------------------- WHAT For the Frost Advisory, temperatures in the mid 30s will result in frost formation. For the Freeze Warning, sub-freezing temperatures from the mid 20s to lower 30s expected. WHERE Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN For the Frost Advisory, from midnight tonight to 8 AM EDT Monday. For the Freeze Warning, from midnight Monday Night to 9 AM EDT Tuesday. IMPACTS Frost and freeze conditions could kill crops and other sensitive vegetation. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. ISSUED AT Sunday, April 19, 2026 at 2:18 PM EDT ISSUED BY National Weather Service New York NY HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Northwest Suffolk, Eastern Bergen, Eastern Passaic, Northeast Suffolk, Northern Westchester, Rockland, Southeast Suffolk, Southern Fairfield, Southern Middlesex, Southern New Haven, Southern New London, Southern Westchester, Southwest Suffolk, Western Bergen, Western Passaic
Freeze Warning
-# HEADLINE -------------------- FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT MONDAY FREEZE WARNING IN EFFECT FROM MIDNIGHT MONDAY NIGHT TO 9 AM EDT TUESDAY # DETAILS -------------------- WHAT For the Frost Advisory, temperatures in the mid 30s will result in frost formation. For the Freeze Warning, sub-freezing temperatures from the mid 20s to lower 30s expected. WHERE Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN For the Frost Advisory, from midnight tonight to 8 AM EDT Monday. For the Freeze Warning, from midnight Monday Night to 9 AM EDT Tuesday. IMPACTS Frost and freeze conditions could kill crops and other sensitive vegetation. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. ISSUED AT Sunday, April 19, 2026 at 2:18 PM EDT ISSUED BY National Weather Service New York NY HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Northwest Suffolk, Eastern Bergen, Eastern Passaic, Northeast Suffolk, Northern Westchester, Rockland, Southeast Suffolk, Southern Fairfield, Southern Middlesex, Southern New Haven, Southern New London, Southern Westchester, Southwest Suffolk, Western Bergen, Western Passaic