Frost Advisory
Ends in 5 h 38 min
When
Until 9 AM EDT this morning.
Where
In Delaware, Kent, New Castle, and Inland Sussex Counties. In Maryland, Caroline, Kent MD, and Queen Annes Counties. In New Jersey, Camden, Cumberland, Gloucester, and Salem Counties.
Issued for this forecast zone · National Weather Service Mount Holly NJ
What, impacts and precautionsHide details
What
Temperatures as low as 35 degrees will result in areas of frost formation.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: New Castle; Kent; Inland Sussex; Kent; Queen Anne's; Caroline; Salem; Gloucester; Camden; Cumberland
See it on weather.gov (opens in a new tab)

Observed 2:55 AM EDT at KPHL

Haddon Heights, NJ weather

Clear and 46°8°.

Forecasts agree

Now 46°8°

Clear

Wind: 5 mph7 km/h; From the west-southwest. Up to 5 mph8 km/h through 3 PM
Dew point: 41°5°; Comfortable
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Air quality: 57Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.39 inHg1029 hPa; Falling slowly · −0.04 inHg−1.2 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (45°7° then, 47°8° now)

Good hours for

Low 37°3° today at 7 AM
Above 50°10° today by 10 AM
High 70°21° today at 3 PM
Below 60°16° tonight after 9 PM

TonightNear 40°4° · Clear
This morningUp to 58°14° by 11 AM · Clear
This afternoonUp to 70°21° by 3 PM · Clear
TonightDown to 51°11° by 5 AM · Clear
Tomorrow morningUp to 60°16° by 11 AM · Clear
Tomorrow afternoonNear 64°18° · Clear
Tomorrow nightDown to 46°8° by 1 AM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Mon 3a	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	1%	0
Mon 4a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 7 mph10 km/h	100%	5%	0
Mon 5a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	4%	0
Mon 6a	Clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 6 mph9 km/h	100%	8%	0
Mon 7a	Partly sunny	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	40%	0
Mon 8a	Mostly sunny	39°4° (likely 38°3° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	100%	48%	0
Mon 9a	Mostly sunny	46°8° (likely 45°7° to 49°9°)	46°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	86%	39%	1
Mon 10a	Mostly sunny	52°11° (likely 52°11° to 55°13°)	52°11°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	71%	11%	2
Mon 11a	Sunny	58°14° (likely 58°14° to 60°16°)	58°14°	0%	5 mph8 km/h from W, gusts 12 mph20 km/h	60%	0%	3
Mon 12p	Sunny	62°17° (likely 62°17° to 64°18°)	62°17°	0%	5 mph8 km/h from W, gusts 11 mph18 km/h	52%	0%	4
Mon 1p	Sunny	66°19° (likely 65°18° to 67°19°)	66°19°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	45%	0%	4
Mon 2p	Sunny	69°21° (likely 67°19° to 69°21°)	69°21°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	40%	0%	4
Mon 3p	Sunny	70°21° (likely 68°20° to 70°21°)	70°21°	0%	5 mph8 km/h from W, gusts 13 mph21 km/h	39%	0%	3
Mon 4p	Sunny	70°21° (likely 68°20° to 70°21°)	70°21°	0%	5 mph8 km/h from W, gusts 14 mph22 km/h	39%	0%	2
Mon 5p	Sunny	70°21° (likely 66°19° to 70°21°)	70°21°	0%	5 mph8 km/h from W, gusts 13 mph21 km/h	41%	0%	1
Mon 6p	Clear	66°19° (likely 62°17° to 66°19°)	66°19°	0%	5 mph8 km/h from W, gusts 10 mph16 km/h	48%	0%	0
Mon 7p	Clear	60°16° (likely 58°14° to 61°16°)	60°16°	0%	5 mph8 km/h from W, gusts 8 mph13 km/h	62%	0%	0
Mon 8p	Clear	60°16° (likely 56°13° to 60°16°)	60°16°	0%	5 mph8 km/h from W, gusts 9 mph14 km/h	67%	0%	0
Mon 9p	Clear	56°13° (likely 54°12° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 9 mph14 km/h	80%	0%	0
Mon 10p	Clear	55°13° (likely 53°12° to 56°13°)	55°13°	0%	0 mph0 km/h, gusts 7 mph11 km/h	83%	0%	0
Mon 11p	Clear	54°12° (likely 51°11° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 6 mph9 km/h	86%	1%	0
Tue 12a	Clear	53°12° (likely 50°10° to 54°12°)	53°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	1%	0
Tue 1a	Clear	53°12° (likely 49°9° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	7%	0
Tue 2a	Clear	52°11° (likely 49°9° to 53°12°)	52°11°	0%	5 mph8 km/h from NW, gusts 8 mph14 km/h	89%	15%	0
Tue 3a	Clear	52°11° (likely 49°9° to 53°12°)	52°11°	0%	5 mph8 km/h from N, gusts 10 mph17 km/h	89%	35%	0
Tue 4a	Clear	52°11° (likely 48°9° to 53°12°)	52°11°	0%	5 mph8 km/h from N, gusts 11 mph18 km/h	89%	41%	0
Tue 5a	Mostly clear	51°11° (likely 48°9° to 52°11°)	51°11°	0%	5 mph8 km/h from N, gusts 11 mph17 km/h	89%	13%	0
Tue 6a	Clear	50°10° (likely 47°8° to 52°11°)	48°9°	0%	5 mph8 km/h from N, gusts 11 mph18 km/h	93%	9%	0
Tue 7a	Sunny	50°10° (likely 47°8° to 52°11°)	48°9°	0%	5 mph8 km/h from N, gusts 12 mph20 km/h	89%	14%	0
Tue 8a	Sunny	50°10° (likely 47°8° to 52°11°)	48°9°	0%	5 mph8 km/h from N, gusts 12 mph20 km/h	89%	15%	0
Tue 9a	Sunny	53°12° (likely 50°10° to 54°12°)	53°12°	0%	5 mph8 km/h from N, gusts 21 mph33 km/h	77%	14%	1
Tue 10a	Sunny	57°14° (likely 52°11° to 57°14°)	57°14°	0%	5 mph8 km/h from N, gusts 20 mph32 km/h	64%	12%	2
Tue 11a	Sunny	60°16° (likely 54°12° to 60°16°)	60°16°	0%	5 mph8 km/h from N, gusts 17 mph27 km/h	55%	14%	3
Tue 12p	Sunny	63°17° (likely 56°13° to 63°17°)	63°17°	0%	5 mph8 km/h from N, gusts 14 mph22 km/h	48%	30%	4
Tue 1p	Sunny	64°18° (likely 58°14° to 64°18°)	64°18°	0%	5 mph8 km/h from N, gusts 12 mph20 km/h	45%	26%	4
Tue 2p	Sunny	65°18° (likely 60°16° to 65°18°)	65°18°	0%	5 mph8 km/h from N, gusts 11 mph17 km/h	43%	2%	4
Tue 3p	Sunny	66°19° (likely 60°16° to 66°19°)	66°19°	0%	5 mph8 km/h from N, gusts 9 mph15 km/h	42%	2%	3
Tue 4p	Sunny	66°19° (likely 60°16° to 66°19°)	66°19°	0%	5 mph8 km/h from NE, gusts 8 mph13 km/h	40%	2%	2
Tue 5p	Sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	5 mph8 km/h from NE, gusts 8 mph12 km/h	43%	40%	1
Tue 6p	Clear	61°16° (likely 57°14° to 61°16°)	61°16°	0%	5 mph8 km/h from NE, gusts 8 mph13 km/h	48%	42%	0
Tue 7p	Mostly clear	58°14° (likely 54°12° to 58°14°)	58°14°	0%	5 mph8 km/h from NE, gusts 7 mph11 km/h	55%	18%	0
Tue 8p	Clear	54°12° (likely 51°11° to 55°13°)	54°12°	0%	5 mph8 km/h from E, gusts 9 mph14 km/h	64%	28%	0
Tue 9p	Clear	51°11° (likely 50°10° to 58°14°)	51°11°	0%	0 mph0 km/h, gusts 7 mph11 km/h	71%	7%	0
Tue 10p	Mostly clear	49°9° (likely 48°9° to 57°14°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	77%	39%	0
Tue 11p	Clear	48°9° (likely 47°8° to 56°13°)	48°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	80%	28%	0
Wed 12a	Mostly clear	47°8° (likely 46°8° to 56°13°)	47°8°	0%	0 mph0 km/h, gusts 2 mph3 km/h	79%	30%	0
Wed 1a	Mostly clear	46°8° (likely 44°7° to 55°13°)	46°8°	0%	0 mph0 km/h, gusts 3 mph4 km/h	83%	12%	0
Wed 2a	Mostly clear	46°8° (likely 42°6° to 54°12°)	46°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	83%	13%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 26. Mostly sunny. High 70°21°, low 37°3°. Typical 63°17° / 45°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°11°
  Dry
Official NWS forecast
Today: Patchy frost before 9am. Sunny, with a high near 70. West wind 0 to 5 mph.
Tonight: Patchy frost. Mostly clear, with a low around 37. West wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–70°21°
Low, likely
37°3°–44°7°
Typical high / low
63°17° / 45°7°
Wind
8 mph13 km/h, gusts 16 mph26 km/h
UV peak
4
Tomorrow, Oct 27. Mostly sunny. High 66°19°, low 44°7°. Typical 63°17° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Official NWS forecast
Day: Sunny, with a high near 66. North wind around 5 mph.
Night: Mostly clear, with a low around 44. Northeast wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–66°19°
Low, likely
44°7°–48°9°
Typical high / low
63°17° / 45°7°
Wind
10 mph16 km/h, gusts 23 mph37 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 65°18°, low 46°8°. Typical 63°17° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–66°19°
Low, likely
41°5°–49°9°
Typical high / low
63°17° / 45°7°
Wind
7 mph10 km/h, gusts 14 mph22 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 70°21°, low 51°11°. Typical 62°17° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Mostly clear, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–70°21°
Low, likely
47°8°–52°11°
Typical high / low
62°17° / 44°7°
Wind
9 mph14 km/h, gusts 28 mph45 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 75°24°, low 52°11°. Typical 62°17° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 53°11°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 75.
Night: Mostly clear, with a low around 52.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–76°24°
Low, likely
50°10°–55°13°
Typical high / low
62°17° / 44°7°
Wind
9 mph15 km/h, gusts 23 mph37 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 72°22°, low 54°12°. Typical 62°17° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 72.
Night: Mostly cloudy, with a low around 54.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–72°22°
Low, likely
49°9°–56°13°
Typical high / low
62°17° / 44°7°
Wind
7 mph12 km/h, gusts 20 mph31 km/h
UV peak
3
Sunday, Nov 1. Mostly cloudy. High 71°22°, low 51°11°. Typical 61°16° / 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°16°
  20% chance · 0.06 in1.6 mm
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  30% chance · 0.12 in3.1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 1pm. Mostly cloudy, with a high near 71.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–72°22°
Low, likely
49°9°–54°12°
Typical high / low
61°16° / 43°6°
Wind
9 mph14 km/h, gusts 17 mph27 km/h
UV peak
3
Monday, Nov 2. Showers. High 65°18°, low 56°13°. Typical 61°16° / 43°6°. Rain 0.14 in3.6 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Showers, 59°15°
  30% chance · 0.1 in2.5 mm
2. Afternoon
  noon–6 PM
  Showers, 64°18°
  30% chance · 0.07 in1.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  20% chance · 0.03 in0.7 mm
4. Overnight
  midnight–6 AM
  Drizzle, 60°15°
  20% chance · 0.03 in0.8 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
62°17°–69°21°
Low, likely
53°12°–60°16°
Typical high / low
61°16° / 43°6°
Wind
7 mph12 km/h, gusts 18 mph28 km/h
Tuesday, Nov 3. Drizzle. High 67°19°, low 56°13°. Typical 60°16° / 42°6°. Rain 0.1 in2.5 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 61°16°
  20% chance · 0.04 in0.9 mm
2. Afternoon
  noon–6 PM
  Drizzle, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°9°
  30% chance · 0.02 in0.6 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–69°21°
Low, likely
52°11°–62°17°
Typical high / low
60°16° / 42°6°
Wind
18 mph28 km/h, gusts 40 mph64 km/h
UV peak
2
Wednesday, Nov 4. Cloudy. High 59°15°, low 50°10°. Typical 60°16° / 42°6°. Rain 0.1 in2.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  30% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Cloudy, 58°15°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  20% chance · 0.01 in0.3 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–65°18°
Low, likely
46°8°–55°13°
Typical high / low
60°16° / 42°6°
Wind
15 mph24 km/h, gusts 27 mph44 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 70°, low 37°.
Tomorrow
Dry, high 66°, low 44°, cooling off.
Wednesday
Dry, high 65°, low 46°.
Rest of week
Mostly dry, highs 59–75°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (PHI) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Delaware River at USCG Station Washington Street (IN MLLW)

5.5 mi

Below flood stage

Level: 6.9 ft

Forecast peak 7.4 ft Mon 2 PM

Reading from Mon 2:06 AM · NWS gauge page

Schuylkill River near Philadelphia near 30th Street

8.1 mi

Below flood stage

Level: 3.4 ft

Forecast peak 4.8 ft Tue 3 PM

Reading from Mon 2 AM · NWS gauge page

Schuylkill River at Philadelphia

8.9 mi

Below flood stage

Level: 6.0 ft
Flow: 1,000 cfs

Forecast peak 6.0 ft Mon 8 AM

Reading from Mon 1 AM · NWS gauge page

Cooper River at Haddonfield

2.9 mi

Below flood stage

Level: 1.4 ft
Flow: 9 cfs

Reading from Mon 2 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 75% less heating than a typical week.

This week 21Typical 82

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 9
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 5 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Today, 12:00 PM–8:00 PM

Good stretch to open the windows.

Is this typical?

Philadelphia International Airport · official normals 1991–2020 · records 1873–2026

Oct 26, today vs a typical year

Today’s expected high is 7°4° warmer than typical.

Last 7 days vs normal

On average 0° warmer than normal (daily mean temperature).

+3°+1°TueOct 20
+2°+1°WedOct 21
+2°+1°ThuOct 22
−2°−1°FriOct 23
−3°−2°SatOct 24
—SunOct 25
—MonOct 26

Haddon Heights weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 43 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 22 min less
Golden hour: 5:27–6:22 PM; Morning 7:05–8:00 AM
Blue hour: 6:22–6:33 PM; Morning 6:54–7:05 AM; first light 6:54 AM

Stars tonight? Fair

Clear 3:22–6:54 AM, but the moon is 100% lit and up.

Moon

Full moon

100% lit · shrinking

Today: sets 7:58 AM · rises 6:05 PM
New moon: Nov 9
Full moon: Nov 24

Looking west from Haddon Heights. The highest point on the skyline is about 600 ft, 9 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Frost Advisory

Haddon Heights, NJ weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Wednesday

Rest of week

What changed since yesterday

Radar

Rivers

Delaware River at USCG Station Washington Street (IN MLLW)

Schuylkill River near Philadelphia near 30th Street

Schuylkill River at Philadelphia

Cooper River at Haddonfield

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 26, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon