Frost Advisory
Ends in 1 h 1 min
When
Until 9 AM EDT this morning.
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 32 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 7:40 AM EDT at KEWR

Sewaren, NJ weather

Sunny and 41°5°.

Forecasts agree

Now 41°5°

Sunny · Feels like 36°2°

Wind: 7 mph11 km/h; From the north-northeast. Up to 7 mph11 km/h through 7 PM
Dew point: 32°0°; Dry, static shocks likely
UV index: 0Low; Moderate 12–3 PM · peak 3
Air quality: 55Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.53 inHg1034 hPa; Rising slowly · +0.03 inHg+1.0 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Above 50°10° today by 11 AM
High 63°17° today at 4 PM

This morningUp to 54°12° by 11 AM · Partly cloudy
This afternoonUp to 63°17° by 4 PM · Clear
TonightDown to 40°4° by 5 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Clear
Tomorrow afternoonUp to 66°19° by 4 PM · Clear
Tomorrow nightDown to 42°6° by 4 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 7a	Mostly cloudy	39°4° (likely 36°2° to 43°6°)	39°4°	0%	2 mph3 km/h from N, gusts 5 mph9 km/h	79%	41%	0
Sat 8a	Sunny	40°4° (likely 37°3° to 44°7°)	38°3°	0%	3 mph5 km/h from N, gusts 5 mph8 km/h	79%	37%	0
Sat 9a	Sunny	44°7° (likely 42°6° to 47°8°)	44°7°	0%	2 mph3 km/h from N, gusts 7 mph12 km/h	73%	35%	0
Sat 10a	Sunny	49°9° (likely 48°9° to 51°11°)	49°9°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	63%	38%	1
Sat 11a	Sunny	54°12° (likely 52°11° to 54°12°)	54°12°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	50%	41%	2
Sat 12p	Partly sunny	56°13° (likely 56°13° to 58°14°)	56°13°	0%	2 mph3 km/h from N, gusts 3 mph4 km/h	45%	36%	3
Sat 1p	Partly sunny	59°15° (likely 58°14° to 60°16°)	59°15°	0%	2 mph3 km/h from NW, gusts 3 mph4 km/h	39%	36%	3
Sat 2p	Sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	35%	26%	3
Sat 3p	Mostly sunny	62°17° (likely 61°16° to 62°17°)	62°17°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	32%	24%	2
Sat 4p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 3 mph5 km/h	31%	10%	1
Sat 5p	Sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 4 mph6 km/h	33%	4%	0
Sat 6p	Clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	1 mph2 km/h from SW, gusts 5 mph7 km/h	39%	6%	0
Sat 7p	Clear	56°13° (likely 51°11° to 56°13°)	56°13°	0%	1 mph2 km/h from SW, gusts 5 mph9 km/h	45%	1%	0
Sat 8p	Clear	53°12° (likely 48°9° to 54°12°)	53°12°	0%	1 mph2 km/h from SW, gusts 5 mph8 km/h	54%	0%	0
Sat 9p	Clear	51°11° (likely 47°8° to 51°11°)	51°11°	0%	1 mph2 km/h from SW, gusts 4 mph7 km/h	54%	0%	0
Sat 10p	Clear	49°9° (likely 45°7° to 50°10°)	49°9°	0%	1 mph2 km/h from W, gusts 4 mph7 km/h	58%	0%	0
Sat 11p	Clear	47°8° (likely 44°7° to 48°9°)	47°8°	0%	1 mph2 km/h from W, gusts 5 mph7 km/h	60%	0%	0
Sun 12a	Clear	46°8° (likely 42°6° to 47°8°)	46°8°	0%	1 mph2 km/h from W, gusts 6 mph10 km/h	63%	0%	0
Sun 1a	Clear	44°7° (likely 40°4° to 45°7°)	44°7°	0%	1 mph2 km/h from W, gusts 7 mph11 km/h	68%	0%	0
Sun 2a	Clear	43°6° (likely 39°4° to 44°7°)	43°6°	0%	1 mph2 km/h from W, gusts 7 mph11 km/h	70%	0%	0
Sun 3a	Clear	41°5° (likely 38°3° to 43°6°)	41°5°	0%	1 mph2 km/h from W, gusts 7 mph11 km/h	76%	1%	0
Sun 4a	Clear	41°5° (likely 37°3° to 42°6°)	41°5°	0%	1 mph2 km/h from W, gusts 6 mph9 km/h	76%	1%	0
Sun 5a	Clear	40°4° (likely 37°3° to 42°6°)	40°4°	0%	1 mph2 km/h from NW, gusts 5 mph8 km/h	76%	1%	0
Sun 6a	Clear	39°4° (likely 36°2° to 41°5°)	39°4°	0%	1 mph2 km/h from NW, gusts 5 mph7 km/h	82%	1%	0
Sun 7a	Sunny	40°4° (likely 35°2° to 40°4°)	40°4°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	79%	1%	0
Sun 8a	Sunny	40°4° (likely 36°2° to 42°6°)	40°4°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	79%	1%	0
Sun 9a	Sunny	45°7° (likely 41°5° to 46°8°)	45°7°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	70%	2%	1
Sun 10a	Sunny	52°11° (likely 49°9° to 52°11°)	52°11°	0%	1 mph2 km/h from NW, gusts 5 mph7 km/h	59%	0%	2
Sun 11a	Sunny	57°14° (likely 55°13° to 57°14°)	57°14°	0%	1 mph2 km/h from NW, gusts 5 mph8 km/h	49%	0%	3
Sun 12p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	41%	0%	4
Sun 1p	Sunny	64°18° (likely 62°17° to 64°18°)	64°18°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	34%	0%	4
Sun 2p	Sunny	65°18° (likely 63°17° to 66°19°)	65°18°	0%	2 mph3 km/h from W, gusts 5 mph7 km/h	31%	0%	4
Sun 3p	Sunny	65°18° (likely 64°18° to 66°19°)	65°18°	0%	2 mph3 km/h from SW, gusts 5 mph8 km/h	31%	0%	3
Sun 4p	Sunny	66°19° (likely 64°18° to 66°19°)	66°19°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	30%	0%	2
Sun 5p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	2 mph3 km/h from SW, gusts 6 mph10 km/h	33%	0%	1
Sun 6p	Clear	62°17° (likely 56°13° to 62°17°)	62°17°	0%	2 mph3 km/h from SW, gusts 7 mph11 km/h	38%	0%	0
Sun 7p	Clear	59°15° (likely 52°11° to 59°15°)	59°15°	0%	2 mph3 km/h from SW, gusts 6 mph10 km/h	45%	0%	0
Sun 8p	Clear	54°12° (likely 49°9° to 54°12°)	54°12°	0%	2 mph3 km/h from SW, gusts 6 mph10 km/h	57%	0%	0
Sun 9p	Clear	52°11° (likely 47°8° to 52°11°)	52°11°	0%	2 mph3 km/h from W, gusts 7 mph12 km/h	59%	0%	0
Sun 10p	Clear	50°10° (likely 45°7° to 50°10°)	50°10°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	61%	0%	0
Sun 11p	Clear	48°9° (likely 44°7° to 48°9°)	48°9°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	65%	0%	0
Mon 12a	Clear	46°8° (likely 42°6° to 47°8°)	46°8°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	71%	0%	0
Mon 1a	Clear	45°7° (likely 40°4° to 47°8°)	45°7°	0%	2 mph3 km/h from W, gusts 8 mph12 km/h	73%	1%	0
Mon 2a	Clear	44°7° (likely 38°3° to 49°9°)	44°7°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	76%	1%	0
Mon 3a	Clear	43°6° (likely 34°1° to 52°11°)	43°6°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	79%	0%	0
Mon 4a	Clear	42°6° (likely 34°1° to 51°11°)	40°4°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	82%	0%	0
Mon 5a	Clear	42°6° (likely 33°1° to 51°11°)	40°4°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	82%	1%	0
Mon 6a	Clear	41°5° (likely 33°1° to 50°10°)	39°4°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	85%	1%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 64°18°, low 38°3°. Typical 63°17° / 46°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°4°
  Dry
Official NWS forecast
Today: Patchy frost before 10am. Mostly sunny. High near 64, with temperatures falling to around 61 in the afternoon. North wind 0 to 3 mph.
Tonight: Patchy frost after 10pm. Mostly clear. Low around 38, with temperatures rising to around 40 overnight. West wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–64°18°
Low, likely
36°2°–42°6°
Typical high / low
63°17° / 46°8°
Wind
6 mph10 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 67°19°, low 41°5°. Typical 63°17° / 46°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  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, 42°6°
  Dry
Official NWS forecast
Day: Patchy frost before 9am. Sunny. High near 67, with temperatures falling to around 65 in the afternoon. West wind around 2 mph.
Night: Clear, with a low around 41. West wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–67°19°
Low, likely
35°2°–41°5°
Typical high / low
63°17° / 46°8°
Wind
6 mph10 km/h
UV peak
4
Monday, Oct 26. Sunny. High 70°21°, low 48°9°. Typical 62°17° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 70. West wind around 6 mph.
Night: Clear. Low around 48, with temperatures rising to around 50 overnight.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–70°21°
Low, likely
36°2°–48°9°
Typical high / low
62°17° / 45°7°
Wind
9 mph14 km/h, gusts 18 mph29 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 61°16°, low 41°5°. Typical 62°17° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°11°
  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 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–63°17°
Low, likely
41°5°–52°11°
Typical high / low
62°17° / 45°7°
Wind
9 mph15 km/h, gusts 24 mph39 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 60°16°, low 45°7°. Typical 62°17° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Night: Partly cloudy, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–61°16°
Low, likely
38°3°–46°8°
Typical high / low
62°17° / 45°7°
Wind
7 mph12 km/h, gusts 16 mph26 km/h
UV peak
2
Thursday, Oct 29. Partly sunny. High 68°20°, low 50°10°. Typical 61°16° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Mostly clear, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–68°20°
Low, likely
44°7°–50°10°
Typical high / low
61°16° / 44°7°
Wind
8 mph13 km/h, gusts 33 mph53 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 70°21°, low 49°9°. Typical 61°16° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 70.
Night: Mostly clear, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–73°23°
Low, likely
47°8°–52°11°
Typical high / low
61°16° / 44°7°
Wind
11 mph17 km/h, gusts 23 mph36 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 67°19°, low 50°10°. Typical 60°16° / 44°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 51°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
61°16°–72°22°
Low, likely
44°7°–55°13°
Typical high / low
60°16° / 44°7°
Wind
11 mph18 km/h, gusts 24 mph39 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 66°19°, low 50°10°. Typical 60°16° / 43°6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 55°13°
  20% chance
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
57°14°–70°21°
Low, likely
46°8°–54°12°
Typical high / low
60°16° / 43°6°
Wind
9 mph14 km/h, gusts 22 mph36 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 66°19°, low 55°13°. Typical 60°16° / 43°6°. Rain 0.04 in1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  30% chance
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
54°12°–72°22°
Low, likely
48°9°–59°15°
Typical high / low
60°16° / 43°6°
Wind
9 mph15 km/h, gusts 18 mph29 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 64°, low 38°.
Tomorrow
Dry, high 67°, low 41°, warming up.
Monday
Dry, high 70°, low 48°, warming up.
Rest of week
Mostly dry, highs 60–70°.

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

Arthur Kill at Perth Amboy (IN MLLW)

3.1 mi

Below flood stage

Level: 6.7 ft

Forecast peak 6.5 ft Sat 8 AM

Reading from Sat 6 AM · NWS gauge page

Rahway River at Rahway

5.0 mi

Below flood stage

Level: 1.6 ft

Reading from Sat 6:30 AM · NWS gauge page

Great Kills Harbor at Great Kills (IN MLLW)

6.6 mi

Below flood stage

Level: 6.5 ft

Reading from Sat 6 AM · NWS gauge page

Raritan Bay at Keansburg (IN MLLW)

8.9 mi

Below flood stage

Level: 6.7 ft

Reading from Sat 6:24 AM · NWS gauge page

For your home

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

Heating this week

About 66% less heating than a typical week.

This week 27Typical 81

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 20
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 4 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–5:00 PM

Good stretch to open the windows.

Is this typical?

Newark Liberty International Airport · official normals 1991–2020 · records 1843–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 1°0° colder than normal (daily mean temperature).

−7°−4°SunOct 18
−3°−2°MonOct 19
+2°+1°TueOct 20
+1°WedOct 21
+3°+2°ThuOct 22
±0°FriOct 23
—SatOct 24

Sewaren weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 46 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 30 min less
Golden hour: 5:25–6:20 PM; Morning 7:00–7:55 AM
Blue hour: 6:20–6:31 PM; Morning 6:50–7:00 AM; first light 6:50 AM

Stars tonight? Fair

Clear 6:31 PM–6:51 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:29 AM · rises 5:00 PM
Full moon: Oct 26
New moon: Nov 9

Looking east from Sewaren. Open water to the horizon.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

Sewaren, NJ weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Arthur Kill at Perth Amboy (IN MLLW)

Rahway River at Rahway

Great Kills Harbor at Great Kills (IN MLLW)

Raritan Bay at Keansburg (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? Fair

Moon