Weather Alerts For Denville, NJ

# HEADLINE -------------------- FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT MONDAY FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING # DETAILS -------------------- WHAT For the Frost Advisory, temperatures as low as 34 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 24 possible. WHERE In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Northampton County. WHEN For the Frost Advisory, from 2 AM to 8 AM EDT Monday. For the Freeze Watch, from late Monday night through Tuesday morning. IMPACTS Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. ISSUED AT Sunday, April 19, 2026 at 1:46 PM EDT ISSUED BY National Weather Service Mount Holly NJ HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Hunterdon, Morris, Northampton, Somerset, Warren Including the cities of Somerville, Easton, Washington, Bethlehem, Morristown, and Flemington

# HEADLINE -------------------- FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT MONDAY FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING # DETAILS -------------------- WHAT For the Frost Advisory, temperatures as low as 34 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 24 possible. WHERE In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Northampton County. WHEN For the Frost Advisory, from 2 AM to 8 AM EDT Monday. For the Freeze Watch, from late Monday night through Tuesday morning. IMPACTS Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. ISSUED AT Sunday, April 19, 2026 at 1:46 PM EDT ISSUED BY National Weather Service Mount Holly NJ HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Hunterdon, Morris, Northampton, Somerset, Warren Including the cities of Somerville, Easton, Washington, Bethlehem, Morristown, and Flemington

Pollen Index: 8.2 Pollen Level: medium-high Predominant Pollen: Maple, Cedar/Juniper and Poplar/Aspen/Cottonwood. The quantity of pollen grains in the air for Monday will be higher than they were today and extend further into the very high range. This increase is due to strong winds and decreasing humidity. If you do suffer from allergies tomorrow could be more difficult.