Frost Advisory
Starts in 8 h 34 min
When
From midnight tonight to 9 AM EDT Sunday.
Where
Portions of central, northern, and southern New Jersey.
Issued for this forecast zone · National Weather Service Mount Holly NJ
What, impacts and precautionsHide details
What
Temperatures as low as 32 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; Eastern Monmouth; Mercer; Salem; Gloucester; Camden; Northwestern Burlington; Ocean; Cumberland; Atlantic; Cape May; Southeastern Burlington
See it on weather.gov (opens in a new tab)

Observed 3:00 PM EDT at KEWR

Colonia, NJ weather

Mostly sunny and 63°17°, jacket by 8 PM.

Mostly agree

Now 63°17°

Mostly sunny

Wind: 5 mph7 km/h; From the west. Light through 3 AM
Dew point: 28°−2°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Air quality: 55Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.52 inHg1034 hPa; Falling · −0.04 inHg−1.5 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 39°4° tomorrow at 6 AM
Above 50°10° tomorrow by 10 AM

This afternoonNear 62°17° · Partly cloudy
TonightDown to 40°4° by 5 AM · Clear
Tomorrow morningUp to 58°14° by 11 AM · Clear
Tomorrow afternoonUp to 66°19° by 4 PM · Clear
Tomorrow nightDown to 42°6° by 4 AM · Clear
Monday morningUp to 59°15° by 11 AM · Clear
Monday afternoonUp to 68°20° by 2 PM · 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 3p	Mostly sunny	62°17° (likely 60°16° to 63°17°)	62°17°	0%	0 mph0 km/h, gusts 3 mph4 km/h	31%	65%	2
Sat 4p	Mostly sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	0 mph0 km/h, gusts 3 mph5 km/h	29%	51%	1
Sat 5p	Mostly sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 3 mph5 km/h	31%	58%	0
Sat 6p	Mostly clear	59°15° (likely 56°13° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 4 mph6 km/h	37%	49%	0
Sat 7p	Mostly clear	56°13° (likely 52°11° to 56°13°)	56°13°	0%	1 mph2 km/h from SW, gusts 5 mph9 km/h	45%	53%	0
Sat 8p	Mostly clear	53°12° (likely 50°10° to 53°12°)	53°12°	0%	1 mph2 km/h from SW, gusts 5 mph9 km/h	50%	32%	0
Sat 9p	Clear	51°11° (likely 48°9° to 51°11°)	51°11°	0%	1 mph2 km/h from W, gusts 5 mph7 km/h	52%	18%	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	56%	16%	0
Sat 11p	Clear	47°8° (likely 44°7° to 49°9°)	47°8°	0%	1 mph2 km/h from W, gusts 6 mph10 km/h	58%	9%	0
Sun 12a	Clear	45°7° (likely 43°6° to 47°8°)	45°7°	0%	1 mph2 km/h from W, gusts 6 mph10 km/h	62%	8%	0
Sun 1a	Clear	44°7° (likely 42°6° to 45°7°)	44°7°	0%	1 mph2 km/h from W, gusts 6 mph10 km/h	65%	4%	0
Sun 2a	Clear	43°6° (likely 41°5° to 44°7°)	43°6°	0%	1 mph2 km/h from W, gusts 6 mph9 km/h	67%	0%	0
Sun 3a	Clear	41°5° (likely 40°4° to 43°6°)	41°5°	0%	1 mph2 km/h from W, gusts 5 mph8 km/h	73%	0%	0
Sun 4a	Clear	41°5° (likely 39°4° to 42°6°)	41°5°	0%	1 mph2 km/h from W, gusts 5 mph8 km/h	73%	0%	0
Sun 5a	Clear	40°4° (likely 39°4° to 41°5°)	40°4°	0%	1 mph2 km/h from NW, gusts 4 mph6 km/h	76%	0%	0
Sun 6a	Clear	39°4° (likely 38°3° to 40°4°)	39°4°	0%	1 mph2 km/h from NW, gusts 5 mph8 km/h	79%	0%	0
Sun 7a	Sunny	39°4° (likely 37°3° to 40°4°)	39°4°	0%	1 mph2 km/h from NW, gusts 5 mph7 km/h	79%	7%	0
Sun 8a	Sunny	40°4° (likely 37°3° to 40°4°)	40°4°	0%	1 mph2 km/h from NW, gusts 3 mph5 km/h	79%	9%	0
Sun 9a	Sunny	45°7° (likely 41°5° to 45°7°)	45°7°	0%	1 mph2 km/h from NW, gusts 3 mph5 km/h	68%	3%	1
Sun 10a	Sunny	52°11° (likely 50°10° to 52°11°)	52°11°	0%	0 mph0 km/h, gusts 5 mph8 km/h	56%	0%	2
Sun 11a	Sunny	58°14° (likely 56°13° to 58°14°)	58°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	45%	0%	3
Sun 12p	Sunny	61°16° (likely 59°15° to 62°17°)	61°16°	0%	1 mph2 km/h from W, gusts 9 mph14 km/h	39%	0%	4
Sun 1p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	1 mph2 km/h from W, gusts 8 mph13 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 8 mph13 km/h	30%	0%	4
Sun 3p	Sunny	65°18° (likely 64°18° to 66°19°)	65°18°	0%	2 mph3 km/h from W, gusts 7 mph12 km/h	30%	0%	3
Sun 4p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	29%	0%	2
Sun 5p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	31%	0%	1
Sun 6p	Clear	62°17° (likely 56°13° to 62°17°)	62°17°	0%	2 mph3 km/h from SW, gusts 6 mph10 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 7 mph12 km/h	44%	0%	0
Sun 8p	Clear	54°12° (likely 50°10° to 55°13°)	54°12°	0%	2 mph3 km/h from SW, gusts 7 mph12 km/h	54%	0%	0
Sun 9p	Clear	52°11° (likely 48°9° to 53°12°)	52°11°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	56%	0%	0
Sun 10p	Clear	50°10° (likely 47°8° to 51°11°)	50°10°	0%	2 mph3 km/h from W, gusts 7 mph12 km/h	61%	0%	0
Sun 11p	Clear	48°9° (likely 46°8° to 50°10°)	48°9°	0%	2 mph3 km/h from W, gusts 7 mph12 km/h	65%	0%	0
Mon 12a	Clear	46°8° (likely 44°7° to 48°9°)	46°8°	0%	2 mph3 km/h from W, gusts 8 mph12 km/h	71%	0%	0
Mon 1a	Clear	45°7° (likely 43°6° to 46°8°)	45°7°	0%	2 mph3 km/h from W, gusts 8 mph14 km/h	70%	0%	0
Mon 2a	Clear	44°7° (likely 42°6° to 45°7°)	44°7°	0%	2 mph3 km/h from W, gusts 8 mph14 km/h	73%	1%	0
Mon 3a	Clear	43°6° (likely 41°5° to 45°7°)	43°6°	0%	2 mph3 km/h from W, gusts 9 mph14 km/h	76%	1%	0
Mon 4a	Clear	42°6° (likely 40°4° to 44°7°)	40°4°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	82%	2%	0
Mon 5a	Clear	42°6° (likely 40°4° to 44°7°)	40°4°	0%	3 mph5 km/h from W, gusts 9 mph14 km/h	82%	1%	0
Mon 6a	Clear	41°5° (likely 39°4° to 45°7°)	39°4°	0%	3 mph5 km/h from W, gusts 9 mph15 km/h	85%	13%	0
Mon 7a	Sunny	41°5° (likely 38°3° to 45°7°)	39°4°	0%	3 mph5 km/h from W, gusts 10 mph15 km/h	85%	9%	0
Mon 8a	Sunny	43°6° (likely 37°3° to 47°8°)	41°5°	0%	3 mph5 km/h from W, gusts 10 mph16 km/h	86%	10%	0
Mon 9a	Sunny	47°8° (likely 40°4° to 53°12°)	46°8°	0%	3 mph5 km/h from W, gusts 9 mph15 km/h	76%	18%	1
Mon 10a	Sunny	53°12° (likely 49°9° to 57°14°)	53°12°	0%	3 mph5 km/h from W, gusts 11 mph17 km/h	66%	14%	2
Mon 11a	Sunny	59°15° (likely 57°14° to 61°16°)	59°15°	0%	3 mph5 km/h from W, gusts 12 mph19 km/h	55%	1%	3
Mon 12p	Sunny	63°17° (likely 60°16° to 64°18°)	63°17°	0%	3 mph5 km/h from W, gusts 12 mph20 km/h	48%	1%	4
Mon 1p	Sunny	66°19° (likely 64°18° to 67°19°)	66°19°	0%	5 mph8 km/h from W, gusts 12 mph20 km/h	43%	3%	4
Mon 2p	Sunny	68°20° (likely 66°19° to 69°21°)	68°20°	0%	5 mph8 km/h from W, gusts 12 mph20 km/h	40%	1%	4

Days ahead

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

Today, Oct 24. Cloudy. High 65°18°, low 38°3°. Typical 63°17° / 46°8°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
2. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 40°4°
  Dry
Official NWS forecast
Today: Sunny. High near 65, with temperatures falling to around 62 in the afternoon. Wind around 0 mph.
Tonight: Patchy frost after 10pm. Mostly clear. Low around 38, with temperatures rising to around 40 overnight. West wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–65°18°
Low, likely
36°2°–41°5°
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. Mostly 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 0 to 3 mph.
Night: Clear, with a low around 41. West wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–67°19°
Low, likely
36°2°–41°5°
Typical high / low
63°17° / 46°8°
Wind
7 mph12 km/h
UV peak
4
Monday, Oct 26. Sunny. High 70°21°, low 48°9°. Typical 62°17° / 45°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°11°
  Dry
Official NWS forecast
Day: Sunny, with a high near 70. West wind around 5 mph.
Night: Clear. Low around 48, with temperatures rising to around 50 overnight.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–70°21°
Low, likely
37°3°–48°9°
Typical high / low
62°17° / 45°7°
Wind
8 mph13 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, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  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°–62°17°
Low, likely
41°5°–52°11°
Typical high / low
62°17° / 45°7°
Wind
10 mph16 km/h, gusts 24 mph39 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 61°16°, low 45°7°. Typical 62°17° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 61.
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
39°4°–45°7°
Typical high / low
62°17° / 45°7°
Wind
8 mph13 km/h, gusts 16 mph26 km/h
UV peak
4
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, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°11°
  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. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  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.
Night: Mostly clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
70°21°–74°23°
Low, likely
48°9°–52°11°
Typical high / low
61°16° / 44°7°
Wind
7 mph12 km/h, gusts 23 mph36 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 68°20°, low 50°10°. Typical 60°16° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–70°21°
Low, likely
43°6°–55°13°
Typical high / low
60°16° / 44°7°
Wind
9 mph14 km/h, gusts 24 mph39 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 68°20°, low 54°12°. Typical 60°16° / 43°6°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  30% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Drizzle, 62°16°
  30% chance · 0.16 in4.2 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°–73°23°
Low, likely
53°12°–57°14°
Typical high / low
60°16° / 43°6°
Wind
10 mph16 km/h, gusts 22 mph36 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 70°21°, low 60°16°. Typical 60°16° / 43°6°. Rain 0.58 in15 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Showers, 64°18°
  30% chance · 0.21 in5.3 mm
2. Afternoon
  noon–6 PM
  Showers, 70°21°
  20% chance · 0.11 in2.9 mm
3. Evening
  6 PM–midnight
  Showers, 67°19°
  20% chance · 0.23 in5.9 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
64°18°–76°24°
Low, likely
58°14°–65°18°
Typical high / low
60°16° / 43°6°
Wind
17 mph27 km/h, gusts 36 mph58 km/h

10 days15 days30 days

The outlook

Today
Dry, high 65°, low 38°.
Tomorrow
Dry, high 67°, low 41°.
Monday
Dry, high 70°, low 48°, warming up.
Rest of week
Mostly dry, highs 61–70°.

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)

6.4 mi

Below flood stage

Level: 1.0 ft

Forecast peak 6.5 ft Sun 7 AM

Reading from Sat 2 PM · NWS gauge page

Passaic River at Chatham

10 mi

Below flood stage

Level: 3.6 ft
Flow: 59 cfs

Forecast peak 3.6 ft Sat 8 PM

Reading from Sat 1:15 PM · NWS gauge page

Rahway River at Rahway

2.5 mi

Below flood stage

Level: 1.5 ft

Reading from Sat 1:30 PM · NWS gauge page

Rahway River at Springfield

6.7 mi

Below flood stage

Level: 1.4 ft
Flow: 25 cfs

Reading from Sat 1:30 PM · NWS gauge page

For your home

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

Heating this week

About 67% 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: 21
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 28°F).

Open the windows?

Today, 4:00 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 2°1° warmer than typical.

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

Colonia 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: 5:26–6:21 PM; Morning 7:01–7:56 AM
Blue hour: 6:21–6:31 PM; Morning 6:50–7:01 AM; first light 6:50 AM

Stars tonight? Fair

Mostly clear 9 PM–6:51 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

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

Looking northwest from Colonia. The highest point on the skyline is about 3,700 ft, 49 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

Colonia, 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)

Passaic River at Chatham

Rahway River at Rahway

Rahway River at Springfield

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