Frost Advisory
Ends in 4 h 17 min
When
From midnight tonight to 9 AM EDT Saturday.
Where
Portions of central, northern, and southern New Jersey and southeast Pennsylvania.
Issued for this forecast zone · National Weather Service Mount Holly NJ
What, impacts and precautionsHide details
What
Temperatures as low as 33 degrees will result in 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: Middlesex; Western Monmouth; Mercer; Salem; Gloucester; Camden; Northwestern Burlington; Ocean; Cumberland; Atlantic; Southeastern Burlington; Delaware; Philadelphia; Eastern Chester; Eastern Montgomery; Lower Bucks
See it on weather.gov (opens in a new tab)

Observed 4:15 AM EDT at KACY

Port Republic, NJ weather

Clear and 36°2°.

Forecasts agree

Now 36°2°

Clear · Feels like 32°0°

Wind: 5 mph7 km/h; From the northwest. Up to 5 mph8 km/h through 4 PM
Dew point: 32°0°; Dry · up to 42°6° by 10 AM (comfortable)
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Air quality: 15Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.48 inHg1032 hPa; Rising slowly · +0.02 inHg+0.8 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

9°5° cooler than this time yesterday (45°7° then, 36°2° now)

Good hours for

Low 34°1° tonight at 5 AM
Above 50°10° today by 10 AM
High 61°16° today at 2 PM
Below 50°10° tonight after 8 PM

TonightNear 35°2° · Clear
This morningUp to 54°12° by 11 AM · Clear
This afternoonUp to 61°16° by 2 PM · Clear
TonightDown to 37°3° by 4 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 2 PM · Clear
Tomorrow nightDown to 39°4° by 3 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
Sat 4a	Clear	35°2° (likely 35°2° to 46°8°)	35°2°	0%	0 mph0 km/h, gusts 8 mph13 km/h	92%	3%	0
Sat 5a	Clear	34°1° (likely 34°1° to 44°7°)	34°1°	0%	0 mph0 km/h, gusts 9 mph14 km/h	92%	2%	0
Sat 6a	Clear	34°1° (likely 34°1° to 40°4°)	34°1°	0%	0 mph0 km/h, gusts 9 mph15 km/h	92%	12%	0
Sat 7a	Sunny	34°1° (likely 34°1° to 40°4°)	34°1°	0%	0 mph0 km/h, gusts 9 mph14 km/h	92%	26%	0
Sat 8a	Partly sunny	35°2° (likely 35°2° to 41°5°)	32°0°	0%	5 mph8 km/h from N, gusts 8 mph13 km/h	92%	38%	0
Sat 9a	Mostly sunny	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 9 mph14 km/h	89%	23%	1
Sat 10a	Mostly sunny	50°10° (likely 49°9° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 9 mph14 km/h	74%	11%	2
Sat 11a	Sunny	54°12° (likely 54°12° to 59°15°)	54°12°	0%	5 mph8 km/h from NE, gusts 7 mph11 km/h	64%	16%	3
Sat 12p	Sunny	57°14° (likely 57°14° to 61°16°)	57°14°	0%	5 mph8 km/h from NE, gusts 7 mph11 km/h	57%	14%	4
Sat 1p	Sunny	59°15° (likely 59°15° to 62°17°)	59°15°	0%	5 mph8 km/h from E, gusts 6 mph9 km/h	51%	7%	4
Sat 2p	Sunny	61°16° (likely 61°16° to 63°17°)	61°16°	0%	5 mph8 km/h from E, gusts 6 mph9 km/h	48%	13%	4
Sat 3p	Sunny	61°16° (likely 61°16° to 62°17°)	61°16°	0%	5 mph8 km/h from E, gusts 6 mph10 km/h	49%	2%	3
Sat 4p	Sunny	61°16° (likely 60°16° to 62°17°)	61°16°	0%	5 mph8 km/h from E, gusts 6 mph10 km/h	49%	3%	2
Sat 5p	Sunny	59°15° (likely 58°14° to 60°16°)	59°15°	0%	5 mph8 km/h from E, gusts 6 mph10 km/h	53%	3%	1
Sat 6p	Clear	56°13° (likely 54°12° to 56°13°)	56°13°	0%	0 mph0 km/h, gusts 7 mph11 km/h	62%	1%	0
Sat 7p	Clear	52°11° (likely 51°11° to 52°11°)	52°11°	0%	0 mph0 km/h, gusts 6 mph10 km/h	74%	2%	0
Sat 8p	Clear	47°8° (likely 47°8° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 5 mph7 km/h	86%	2%	0
Sat 9p	Clear	45°7° (likely 45°7° to 50°10°)	45°7°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	1%	0
Sat 10p	Clear	44°7° (likely 44°7° to 49°9°)	44°7°	0%	0 mph0 km/h, gusts 4 mph7 km/h	93%	0%	0
Sat 11p	Clear	42°6° (likely 42°6° to 49°9°)	42°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	93%	2%	0
Sun 12a	Clear	41°5° (likely 41°5° to 48°9°)	41°5°	0%	0 mph0 km/h, gusts 4 mph7 km/h	92%	14%	0
Sun 1a	Clear	40°4° (likely 40°4° to 47°8°)	40°4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	92%	21%	0
Sun 2a	Clear	40°4° (likely 40°4° to 47°8°)	40°4°	0%	0 mph0 km/h, gusts 5 mph8 km/h	92%	28%	0
Sun 3a	Clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	92%	32%	0
Sun 4a	Mostly clear	37°3° (likely 37°3° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 5 mph7 km/h	92%	44%	0
Sun 5a	Mostly clear	37°3° (likely 36°2° to 41°5°)	37°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	92%	50%	0
Sun 6a	Mostly clear	36°2° (likely 35°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 5 mph9 km/h	92%	36%	0
Sun 7a	Partly sunny	36°2° (likely 35°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 6 mph9 km/h	92%	36%	0
Sun 8a	Mostly sunny	37°3° (likely 35°2° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	29%	0
Sun 9a	Sunny	42°6° (likely 41°5° to 46°8°)	42°6°	0%	0 mph0 km/h, gusts 6 mph10 km/h	89%	10%	1
Sun 10a	Sunny	52°11° (likely 51°11° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 8 mph12 km/h	66%	2%	2
Sun 11a	Sunny	57°14° (likely 57°14° to 60°16°)	57°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	53%	0%	3
Sun 12p	Sunny	60°16° (likely 60°16° to 63°17°)	60°16°	0%	0 mph0 km/h, gusts 6 mph10 km/h	46%	0%	4
Sun 1p	Sunny	63°17° (likely 62°17° to 65°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph7 km/h	39%	0%	4
Sun 2p	Sunny	64°18° (likely 63°17° to 66°19°)	64°18°	0%	0 mph0 km/h, gusts 4 mph7 km/h	38%	0%	4
Sun 3p	Sunny	64°18° (likely 63°17° to 66°19°)	64°18°	0%	0 mph0 km/h, gusts 4 mph6 km/h	38%	1%	3
Sun 4p	Sunny	64°18° (likely 62°17° to 66°19°)	64°18°	0%	0 mph0 km/h, gusts 5 mph8 km/h	41%	0%	2
Sun 5p	Sunny	62°17° (likely 60°16° to 63°17°)	62°17°	0%	0 mph0 km/h, gusts 6 mph10 km/h	48%	1%	1
Sun 6p	Clear	58°14° (likely 55°13° to 58°14°)	58°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	57%	0%	0
Sun 7p	Clear	54°12° (likely 51°11° to 54°12°)	54°12°	0%	0 mph0 km/h, gusts 6 mph10 km/h	69%	0%	0
Sun 8p	Clear	47°8° (likely 47°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 6 mph10 km/h	86%	0%	0
Sun 9p	Clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	0 mph0 km/h, gusts 6 mph9 km/h	93%	0%	0
Sun 10p	Clear	44°7° (likely 44°7° to 46°8°)	44°7°	0%	0 mph0 km/h, gusts 7 mph10 km/h	93%	0%	0
Sun 11p	Clear	43°6° (likely 43°6° to 45°7°)	43°6°	0%	0 mph0 km/h, gusts 8 mph12 km/h	93%	0%	0
Mon 12a	Clear	42°6° (likely 42°6° to 44°7°)	42°6°	0%	0 mph0 km/h, gusts 7 mph11 km/h	93%	2%	0
Mon 1a	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 6 mph9 km/h	92%	4%	0
Mon 2a	Clear	40°4° (likely 40°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	3%	0
Mon 3a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 5 mph9 km/h	92%	0%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 62°17°, low 34°1°. Typical 65°18° / 43°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Today: Areas of frost before 10am. Sunny, with a high near 62. Northeast wind 0 to 5 mph.
Tonight: Areas of frost. Mostly clear, with a low around 34. North wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–63°17°
Low, likely
34°1°–40°4°
Typical high / low
65°18° / 43°6°
Wind
7 mph10 km/h, gusts 15 mph23 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 65°18°, low 35°2°. Typical 64°18° / 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Official NWS forecast
Day: Patchy frost before 9am. Sunny, with a high near 65. North wind around 0 mph.
Night: Clear, with a low around 35. Southeast wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–66°19°
Low, likely
35°2°–40°4°
Typical high / low
64°18° / 43°6°
Wind
6 mph10 km/h, gusts 11 mph18 km/h
UV peak
4
Monday, Oct 26. Sunny. High 68°20°, low 45°7°. Typical 64°18° / 43°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68.
Night: Clear, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–69°21°
Low, likely
37°3°–45°7°
Typical high / low
64°18° / 43°6°
Wind
8 mph13 km/h, gusts 18 mph29 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 61°16°, low 40°4°. Typical 64°18° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 61.
Night: Mostly clear, with a low around 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–64°18°
Low, likely
40°4°–49°9°
Typical high / low
64°18° / 42°6°
Wind
10 mph16 km/h, gusts 28 mph45 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 60°16°, low 44°7°. Typical 63°17° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 44°6°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Night: Mostly cloudy, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–62°17°
Low, likely
41°5°–45°7°
Typical high / low
63°17° / 42°6°
Wind
9 mph15 km/h, gusts 19 mph31 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 66°19°, low 48°9°. Typical 63°17° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 66.
Night: Mostly clear, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
44°7°–48°9°
Typical high / low
63°17° / 42°6°
Wind
8 mph13 km/h, gusts 24 mph39 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 69°21°, low 48°9°. Typical 63°17° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 69.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–73°23°
Low, likely
45°7°–51°11°
Typical high / low
63°17° / 41°5°
Wind
9 mph15 km/h, gusts 28 mph45 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 67°19°, low 48°9°. Typical 62°17° / 41°5°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
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°–73°23°
Low, likely
44°7°–51°11°
Typical high / low
62°17° / 41°5°
Wind
10 mph16 km/h, gusts 25 mph40 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 67°19°, low 50°10°. Typical 62°17° / 41°5°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 58°14°
  Dry
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
61°16°–70°21°
Low, likely
47°8°–55°13°
Typical high / low
62°17° / 41°5°
Wind
8 mph13 km/h, gusts 17 mph27 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 69°21°, low 58°14°. Typical 62°17° / 40°4°. Rain 0.13 in3.3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 61°16°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  20% chance · 0.07 in1.7 mm
3. Evening
  6 PM–midnight
  Mostly clear, 61°16°
  20% chance · 0.17 in4.4 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
66°19°–71°22°
Low, likely
55°13°–60°16°
Typical high / low
62°17° / 40°4°
Wind
16 mph26 km/h, gusts 36 mph58 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 34°.
Tomorrow
Dry, high 65°, low 35°, warming up.
Monday
Dry, high 68°, low 45°, warming up.
Rest of week
Mostly dry, highs 60–69°.

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

New Jersey Atlantic Coast at Atlantic City (ocean front) (IN MLLW)

13 mi

Below flood stage

Level: 3.6 ft

Forecast peak 5.7 ft Sat 6 AM

Reading from Sat 3:06 AM · NWS gauge page

East Branch Bass River at New Gretna

6.3 mi

Below flood stage

Level: 3.7 ft
Flow: 9 cfs

Reading from Sat 2:30 AM · NWS gauge page

Absecon Creek at Absecon

7.6 mi

Level: 2.0 ft
Flow: 154 cfs

Reading from Sat 3:10 AM · NWS gauge page

Absecon Creek at Absecon (IN MLLW)

7.8 mi

Below flood stage

Level: 1.8 ft

Reading from Sat 2:23 AM · NWS gauge page

For your home

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

Heating this week

About 60% less heating than a typical week.

This week 34Typical 84

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 27
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 20 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 32°F).

Open the windows?

Today, 2:00 PM–4:00 PM

Good stretch to open the windows.

Is this typical?

Atlantic City International Airport · official normals 1991–2020 · records 1943–2026

Oct 24, today vs a typical year

Today’s expected high is 3°2° colder than typical.

Last 7 days vs normal

On average 3°2° colder than normal (daily mean temperature).

−9°−5°SunOct 18
−5°−3°MonOct 19
±0°TueOct 20
±0°WedOct 21
+1°±0°ThuOct 22
—FriOct 23
—SatOct 24

Port Republic weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 49 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 26 min less
Golden hour: 5:28–6:23 PM; Morning 7:00–7:54 AM
Blue hour: 6:23–6:33 PM; Morning 6:50–7:00 AM; first light 6:50 AM

Stars tonight? Good

Clear 4:43–6:50 AM; moon 96% lit, sets 5:29 AM.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:29 AM · rises 5:02 PM
Full moon: Oct 26
New moon: Nov 9

Looking east from Port Republic. The highest point on the skyline is about 1,000 ft, 19 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

Port Republic, NJ weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

New Jersey Atlantic Coast at Atlantic City (ocean front) (IN MLLW)

East Branch Bass River at New Gretna

Absecon Creek at Absecon

Absecon Creek at Absecon (IN MLLW)

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Good

Moon