weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Extreme Heat Watch


URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
205 PM EDT Fri Jun 20 2025

NJZ013-020-027-210800-
/O.EXB.KPHI.XH.A.0001.250622T1200Z-250626T0000Z/
Western Monmouth-Ocean-Southeastern Burlington-
Including the cities of Wharton State Forest, Jackson, and
Freehold
205 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
WEDNESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 106
  degrees possible.

* WHERE...Western Monmouth, Ocean, and Southeastern Burlington
  Counties.

* WHEN...From Sunday morning through Wednesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...The highest temperatures and heat indices
  will be Monday and Tuesday. Low temperatures near 75 to 80 degrees
  will not offer much relief at night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
205 PM EDT Fri Jun 20 2025

DEZ001-NJZ017>019-210800-
/O.EXT.KPHI.XH.A.0001.250622T1200Z-250626T0000Z/
New Castle-Gloucester-Camden-Northwestern Burlington-
Including the cities of Mount Holly, Cherry Hill, Glassboro,
Moorestown, Wilmington, and Camden
205 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH
WEDNESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 107
  degrees possible.

* WHERE...In Delaware, New Castle County. In New Jersey, Camden,
  Gloucester, and Northwestern Burlington Counties.

* WHEN...From Sunday morning through Wednesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...The highest temperatures and heat indices
  will be Monday and Tuesday. Low temperatures near 75 to 80 degrees
  will not offer much relief at night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
205 PM EDT Fri Jun 20 2025

PAZ060>062-070-071-101>106-210800-
/O.EXT.KPHI.XH.A.0001.250622T1200Z-250626T0000Z/
Berks-Lehigh-Northampton-Delaware-Philadelphia-Western Chester-
Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks-
Lower Bucks-
Including the cities of Lansdale, Allentown, West Chester,
Easton, Doylestown, Oxford, Pottstown, Norristown, Morrisville,
Reading, Media, Chalfont, Kennett Square, Honey Brook,
Philadelphia, Perkasie, Bethlehem, and Collegeville
205 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH
WEDNESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 107
  degrees possible.

* WHERE...Portions of east central and southeast Pennsylvania.

* WHEN...From Sunday morning through Wednesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...The highest temperatures and heat indices
  will be Monday and Tuesday. Low temperatures near 75 to 80 degrees
  will not offer much relief at night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

Guzzo

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
205 PM EDT Fri Jun 20 2025

NJZ001-007>010-012-015-210800-
/O.EXT.KPHI.XH.A.0001.250622T1200Z-250626T0000Z/
Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-
Including the cities of Trenton, Washington, Somerville,
Flemington, Morristown, New Brunswick, and Newton
205 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH
WEDNESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 107
  degrees possible.

* WHERE...Mercer, Middlesex, Morris, Somerset, Sussex, Warren, and
  Hunterdon Counties.

* WHEN...From Sunday morning through Wednesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...The highest temperatures and heat indices
  will be Monday and Tuesday. Low temperatures near 75 to 80 degrees
  will not offer much relief at night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Binghamton NY
219 PM EDT Fri Jun 20 2025

NYZ018-023>025-055-056-062-PAZ038>040-043-044-047-048-072-210830-
/O.NEW.KBGM.XH.A.0001.250622T1600Z-250626T0000Z/
Onondaga-Schuyler-Chemung-Tompkins-Tioga-Broome-Sullivan-Bradford-
Susquehanna-Northern Wayne-Wyoming-Lackawanna-Luzerne-Pike-
Southern Wayne-
Including the cities of Equinunk, Hazleton, Owego, Watkins Glen,
Hallstead, Syracuse, Towanda, Montrose, Scranton, Milford,
Wilkes-Barre, Honesdale, Monticello, Binghamton, Tunkhannock,
Sayre, Damascus, Ithaca, Elmira, and Waverly
219 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
WEDNESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values up to or
  exceeding 105 degrees possible.

* WHERE...In New York, Broome, Chemung, Onondaga, Schuyler,
  Sullivan, Tioga, and Tompkins Counties. In Pennsylvania, Bradford,
  Lackawanna, Luzerne, Northern Wayne, Pike, Southern Wayne,
  Susquehanna, and Wyoming Counties.

* WHEN...From Sunday afternoon through Wednesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...The highest temperatures and heat indices are
  likely to occur in the valley locations. There will be little
  overnight relief with lows only dropping into the 70s in many
  locations. Additional surrounding locations may need heat
  headlines if confidence continues to grow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

MJM

URGENT - WEATHER MESSAGE
National Weather Service Albany NY
211 PM EDT Fri Jun 20 2025

CTZ001-013-NYZ041-049-050-052-053-059>061-064>066-083-084-210900-
/O.NEW.KALY.XH.A.0001.250623T1500Z-250625T0000Z/
Northern Litchfield-Southern Litchfield-Northern Saratoga-Eastern
Schenectady-Southern Saratoga-Eastern Albany-Western Rensselaer-
Eastern Greene-Western Columbia-Eastern Columbia-Eastern Ulster-
Western Dutchess-Eastern Dutchess-Southeast Warren-Southern
Washington-
Including the cities of Athens, North Easton, Saratoga Lake,
Burnt Hills, West Glens Falls, Hudson Falls, Middle Falls,
Torrington, Stanfordville, Millbrook, Glens Falls, Beacon, New
Milford, Poughkeepsie, Albany, Ballston Spa, New Lebanon, New
Paltz, Mechanicville, Rotterdam, Waterford, Dover Plains, Clifton
Park, Cairo, Pine Plains, Arlington, Coxsackie, Catskill,
Pawling, Jefferson Heights, Wingdale, Troy, Gaylordsville,
Greenwich, Cambridge, Saratoga Springs, Hudson, Kingston, Amenia,
Schenectady, Thomaston, Fort Edward, Terryville, and Oakville
211 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
EVENING...

* WHAT...Dangerously hot conditions with heat index values
  potentially exceeding 105 degrees.

* WHERE...Litchfield County in northwestern Connecticut and the mid
  Hudson River Valley, southern and central Taconics, the Capital
  Region, and the Upper Hudson Valley and Glens Falls area.

* WHEN...From Monday morning through Tuesday evening.

* IMPACTS...The risk for heat related illnesses increases
  significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...An extended period of extreme heat and
  humidity will occur Monday and Tuesday. The worst of the heat and
  humidity potentially occurs on these days when heat indices may
  reach 105 to 110 degrees.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

Wasula

URGENT - WEATHER MESSAGE
National Weather Service New York NY
210 PM EDT Fri Jun 20 2025

CTZ005>010-NJZ002-004-006-103>108-NYZ067>071-210900-
/O.NEW.KOKX.XH.A.0001.250622T1600Z-250625T0000Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-Northern
New London-Southern Fairfield-Southern New Haven-Western Passaic-
Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-Western
Essex-Eastern Essex-Western Union-Eastern Union-Orange-Putnam-
Rockland-Northern Westchester-Southern Westchester-
210 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
TUESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 109
  possible.

* WHERE...Portions of southern Connecticut, northeast New Jersey,
  and southeast New York.

* WHEN...From Sunday afternoon through Tuesday evening.

* IMPACTS...Extreme heat and humidity will significantly increase
  the potential for heat related illnesses, particularly for those
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Highest temperatures and heat indices Monday
  and Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

An Extreme Heat Watch means that the combination of heat and
humidity could create a dangerous situation in which heat illnesses
are possible. Take extra precautions if you work or spend time
outside. When possible, reschedule strenuous activities to early
morning or evening. Know the signs and symptoms of heat exhaustion
and heat stroke. Wear light weight and loose fitting clothing when
possible, and drink plenty of water.

Seniors and those with chronic health problems or mental health
conditions are at an increased risk. Homes without air conditioning
can be much hotter than outdoor temperatures.

Use air conditioning to stay cool at home or go to a place that has
air conditioning. If you don`t have home air conditioning, continue
to seek out cool spaces each day as long as it remains hot, and for
a few days after if your home is still hot. Check on vulnerable
friends, family members and neighbors.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! In cases of heat stroke call 9 1 1.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service New York NY
210 PM EDT Fri Jun 20 2025

CTZ011-012-NYZ078-080-177-179-210900-
/O.NEW.KOKX.XH.A.0001.250622T1600Z-250625T0000Z/
Southern Middlesex-Southern New London-Northwest Suffolk-
Southwest Suffolk-Northern Nassau-Southern Nassau-
210 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
TUESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 105
  possible.

* WHERE...In Connecticut, Southern Middlesex and Southern New London
  Counties. In New York, Northern Nassau, Northwest Suffolk,
  Southern Nassau, and Southwest Suffolk Counties.

* WHEN...From Sunday afternoon through Tuesday evening.

* IMPACTS...Extreme heat and humidity will significantly increase
  the potential for heat related illnesses, particularly for those
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Highest temperatures and heat indices Monday
  and Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

An Extreme Heat Watch means that the combination of heat and
humidity could create a dangerous situation in which heat illnesses
are possible. Take extra precautions if you work or spend time
outside. When possible, reschedule strenuous activities to early
morning or evening. Know the signs and symptoms of heat exhaustion
and heat stroke. Wear light weight and loose fitting clothing when
possible, and drink plenty of water.

Seniors and those with chronic health problems or mental health
conditions are at an increased risk. Homes without air conditioning
can be much hotter than outdoor temperatures.

Use air conditioning to stay cool at home or go to a place that has
air conditioning. If you don`t have home air conditioning, continue
to seek out cool spaces each day as long as it remains hot, and for
a few days after if your home is still hot. Check on vulnerable
friends, family members and neighbors.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! In cases of heat stroke call 9 1 1.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service New York NY
210 PM EDT Fri Jun 20 2025

NYZ072>075-176-178-210900-
/O.NEW.KOKX.XH.A.0001.250622T1600Z-250625T0000Z/
New York (Manhattan)-Bronx-Richmond (Staten Island)-Kings
(Brooklyn)-Northern Queens-Southern Queens-
210 PM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
TUESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 106
  possible.

* WHERE...Bronx, Kings (Brooklyn), New York (Manhattan), Northern
  Queens, Richmond (Staten Island), and Southern Queens Counties.

* WHEN...From Sunday afternoon through Tuesday evening.

* IMPACTS...Extreme heat and humidity will significantly increase
  the potential for heat related illnesses, particularly for those
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Highest temperatures and heat indices Monday
  and Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

New York City residents should call 3 1 1 to identify cooling center
locations and obtain `Beat the Heat` safety tips.

An Extreme Heat Watch means that the combination of heat and
humidity could create a dangerous situation in which heat illnesses
are possible. Take extra precautions if you work or spend time
outside. When possible, reschedule strenuous activities to early
morning or evening. Know the signs and symptoms of heat exhaustion
and heat stroke. Wear light weight and loose fitting clothing when
possible, and drink plenty of water.

Seniors and those with chronic health problems or mental health
conditions are at an increased risk. Homes without air conditioning
can be much hotter than outdoor temperatures.

Use air conditioning to stay cool at home or go to a place that has
air conditioning. If you don`t have home air conditioning, continue
to seek out cool spaces each day as long as it remains hot, and for
a few days after if your home is still hot. Check on vulnerable
friends, family members and neighbors.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! In cases of heat stroke call 9 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc

JM

URGENT - WEATHER MESSAGE
National Weather Service State College PA
342 AM EDT Fri Jun 20 2025

PAZ019-026>028-035-036-045-046-049>053-056>059-063>066-210330-
/O.NEW.KCTP.XH.A.0001.250622T1500Z-250626T0000Z/
Southern Centre-Huntingdon-Mifflin-Juniata-Fulton-Franklin-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-
Cumberland-Adams-York-Lancaster-
Including the cities of State College, Lewisburg, Mifflintown,
Lebanon, Bloomsburg, Hershey, Lewistown, Selinsgrove, Sunbury,
Pottsville, Shamokin, Chambersburg, Lancaster, Lock Haven,
McConnellsburg, York, Mount Union, Williamsport, Harrisburg,
Gettysburg, Huntingdon, Berwick, Danville, Carlisle, and Newport
342 AM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
WEDNESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values over 105
  possible.

* WHERE...A portion of central Pennsylvania east of I-99 and south
  of I-80.

* WHEN...From Sunday morning through Wednesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...Heat index values and the associated risk of
  heat-related impacts will be highest on Monday and Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Check up on relatives and neighbors, and provide pets with adequate
water and shelter from the sun.

Wear lightweight and loose fitting clothing.

In addition to the daytime heat, overnight low temperatures will
also be very warm and oppressively muggy.

&&

$$

For more information from the National Weather Service visit
weather.gov/StateCollege

Banghoff/Bauco

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE