Freeze Warning
Starts in 4 h 48 min
When
From midnight tonight to 9 AM EDT Saturday.
Where
In New Jersey, Morris, Somerset, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Upper Bucks, Western Chester, and Western Montgomery Counties.
Issued for this forecast zone · National Weather Service Mount Holly NJ
What, impacts and precautionsHide details
What
Sub-freezing temperatures as low as 30 degrees expected.
Impacts
Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: Morris; Hunterdon; Somerset; Berks; Lehigh; Western Chester; Western Montgomery; Upper Bucks
See it on weather.gov (opens in a new tab)

Observed 5:45 PM EDT at KMMU

Dover, NJ weather

Freeze Warning. 54°12° and sunny now.

Mostly agree

Now 54°12°

Sunny

Wind: 6 mph9 km/h; From the north-northeast. Up to 6 mph9 km/h through 7 AM
Dew point: 31°−1°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Air quality: 32Good; Ozone · tomorrow moderate

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below freezing tomorrow 6–8 AM (low 31°−1°)
Low 31°−1° tomorrow at 6 AM
Above 50°10° tomorrow by 11 AM
High 62°17° tomorrow at 3 PM
Below 50°10° tomorrow night after 8 PM

TonightDown to 33°1° by 3 AM · Partly cloudy
Tomorrow morningUp to 55°13° by 11 AM · freezing, low 31°−1° · Mostly cloudy
Tomorrow afternoonUp to 62°17° by 3 PM · Partly cloudy
Tomorrow nightDown to 35°2° by 5 AM · Clear
Sunday morningUp to 58°14° by 11 AM · Clear
Sunday afternoonNear 63°17° · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Fri 7p	Partly cloudy	48°9° (likely 48°9° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 6 mph9 km/h	51%	53%	0
Fri 8p	Cloudy	43°6° (likely 43°6° to 47°8°)	43°6°	0%	0 mph0 km/h, gusts 6 mph9 km/h	67%	64%	0
Fri 9p	Cloudy	41°5° (likely 41°5° to 45°7°)	41°5°	0%	0 mph0 km/h, gusts 4 mph7 km/h	73%	75%	0
Fri 10p	Partly cloudy	38°3° (likely 38°3° to 44°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	79%	43%	0
Fri 11p	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 4 mph6 km/h	82%	13%	0
Sat 12a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 4 mph6 km/h	85%	15%	0
Sat 1a	Partly cloudy	35°2° (likely 35°2° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 5 mph7 km/h	85%	20%	0
Sat 2a	Partly cloudy	34°1° (likely 34°1° to 41°5°)	34°1°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	18%	0
Sat 3a	Partly cloudy	33°1° (likely 33°1° to 40°4°)	33°1°	0%	0 mph0 km/h, gusts 5 mph8 km/h	92%	21%	0
Sat 4a	Partly cloudy	33°1° (likely 33°1° to 40°4°)	33°1°	0%	0 mph0 km/h, gusts 5 mph7 km/h	92%	24%	0
Sat 5a	Partly cloudy	33°1° (likely 33°1° to 40°4°)	33°1°	0%	0 mph0 km/h, gusts 4 mph7 km/h	92%	71%	0
Sat 6a	Cloudy	31°−1° (likely 31°−1° to 40°4°)	31°−1°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	78%	0
Sat 7a	Cloudy	32°0° (likely 32°0° to 39°4°)	32°0°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	78%	0
Sat 8a	Cloudy	34°1° (likely 34°1° to 40°4°)	34°1°	0%	0 mph0 km/h, gusts 4 mph6 km/h	85%	80%	0
Sat 9a	Cloudy	40°4° (likely 40°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	73%	80%	1
Sat 10a	Cloudy	49°9° (likely 49°9° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	54%	77%	2
Sat 11a	Partly sunny	55°13° (likely 53°12° to 56°13°)	55°13°	0%	0 mph0 km/h, gusts 4 mph6 km/h	43%	68%	3
Sat 12p	Cloudy	57°14° (likely 56°13° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 3 mph5 km/h	40%	68%	3
Sat 1p	Mostly sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 3 mph5 km/h	36%	60%	4
Sat 2p	Partly sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 3 mph6 km/h	35%	52%	4
Sat 3p	Partly sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 4 mph6 km/h	34%	46%	3
Sat 4p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 4 mph7 km/h	34%	14%	2
Sat 5p	Mostly sunny	60°16° (likely 57°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	37%	6%	1
Sat 6p	Clear	57°14° (likely 52°11° to 57°14°)	57°14°	0%	0 mph0 km/h, gusts 6 mph10 km/h	43%	3%	0
Sat 7p	Clear	53°12° (likely 49°9° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 7 mph11 km/h	50%	2%	0
Sat 8p	Clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	68%	2%	0
Sat 9p	Clear	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 7 mph11 km/h	76%	1%	0
Sat 10p	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 6 mph10 km/h	79%	0%	0
Sat 11p	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	0 mph0 km/h, gusts 6 mph10 km/h	85%	0%	0
Sun 12a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 7 mph10 km/h	89%	0%	0
Sun 1a	Clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	89%	0%	0
Sun 2a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	0%	0
Sun 3a	Clear	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	0%	0
Sun 4a	Clear	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	0%	0
Sun 5a	Clear	35°2° (likely 35°2° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	0%	0
Sun 6a	Clear	34°1° (likely 34°1° to 41°5°)	34°1°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	0%	0
Sun 7a	Sunny	34°1° (likely 34°1° to 40°4°)	34°1°	0%	0 mph0 km/h, gusts 7 mph10 km/h	100%	0%	0
Sun 8a	Sunny	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 7 mph11 km/h	100%	0%	0
Sun 9a	Sunny	43°6° (likely 42°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 7 mph11 km/h	82%	0%	1
Sun 10a	Sunny	51°11° (likely 51°11° to 54°12°)	51°11°	0%	0 mph0 km/h, gusts 9 mph15 km/h	66%	0%	2
Sun 11a	Sunny	58°14° (likely 55°13° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 8 mph13 km/h	53%	0%	3
Sun 12p	Sunny	62°17° (likely 58°14° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 7 mph12 km/h	44%	0%	4
Sun 1p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	0 mph0 km/h, gusts 7 mph11 km/h	40%	0%	4
Sun 2p	Sunny	64°18° (likely 62°17° to 65°18°)	64°18°	0%	0 mph0 km/h, gusts 7 mph11 km/h	38%	0%	4
Sun 3p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 7 mph12 km/h	38%	0%	3
Sun 4p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 8 mph12 km/h	40%	0%	2
Sun 5p	Sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 7 mph11 km/h	44%	0%	1
Sun 6p	Clear	59°15° (likely 52°11° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 5 mph8 km/h	53%	0%	0

Days ahead

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

Today, Oct 23. Cloudy. High 59°15°, low 31°−1°. Typical 62°17° / 40°4°. Dry. Mostly agree.
1. Evening
  6 PM–midnight
  Cloudy, 43°6°
  Dry
2. Overnight
  midnight–6 AM
  Partly cloudy, 33°1°
  Dry
Official NWS forecast
Tonight: Areas of frost after 10pm. Partly cloudy, with a low around 31. East wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–60°16°
Low, likely
31°−1°–44°7°
Typical high / low
62°17° / 40°4°
Wind
11 mph17 km/h, gusts 28 mph45 km/h
UV peak
4
Tomorrow, Oct 24. Cloudy. High 62°17°, low 34°1°. Typical 61°16° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Day: Areas of frost before 10am. Mostly sunny, with a high near 62. Northeast wind around 0 mph.
Night: Areas of frost after 10pm. Clear, with a low around 34. West wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–62°17°
Low, likely
34°1°–39°4°
Typical high / low
61°16° / 40°4°
Wind
7 mph11 km/h, gusts 13 mph21 km/h
UV peak
4
Sunday, Oct 25. Sunny. High 65°18°, low 37°3°. Typical 61°16° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny, with a high near 65. Wind around 0 mph.
Night: Clear, with a low around 37. Wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–65°18°
Low, likely
37°3°–40°4°
Typical high / low
61°16° / 39°4°
Wind
7 mph12 km/h, gusts 13 mph21 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 69°21°, low 44°7°. Typical 60°16° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  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.
Night: Mostly clear, with a low around 44.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–69°21°
Low, likely
40°4°–44°7°
Typical high / low
60°16° / 39°4°
Wind
9 mph15 km/h, gusts 23 mph37 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 62°17°, low 38°3°. Typical 60°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 62.
Night: Partly cloudy, with a low around 38.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–62°17°
Low, likely
38°3°–44°7°
Typical high / low
60°16° / 39°4°
Wind
9 mph15 km/h, gusts 24 mph38 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 59°15°, low 43°6°. Typical 60°16° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 59.
Night: Mostly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–59°15°
Low, likely
35°2°–43°6°
Typical high / low
60°16° / 38°3°
Wind
6 mph10 km/h, gusts 16 mph26 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 66°19°, low 47°8°. Typical 59°15° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 66.
Night: Partly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–66°19°
Low, likely
42°6°–47°8°
Typical high / low
59°15° / 38°3°
Wind
11 mph18 km/h, gusts 30 mph49 km/h
UV peak
4
Friday, Oct 30. Partly sunny. High 67°19°, low 48°9°. Typical 59°15° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  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 67.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
62°17°–69°21°
Low, likely
44°7°–51°11°
Typical high / low
59°15° / 38°3°
Wind
9 mph14 km/h, gusts 26 mph42 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 65°18°, low 46°8°. Typical 59°15° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 47°8°
  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
62°17°–67°19°
Low, likely
42°6°–51°11°
Typical high / low
59°15° / 38°3°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 62°17°, low 48°9°. Typical 58°14° / 37°3°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 61°16°
  20% chance
3. Evening
  6 PM–midnight
  Fog, 55°13°
  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
58°14°–65°18°
Low, likely
45°7°–51°11°
Typical high / low
58°14° / 37°3°
Wind
9 mph15 km/h, gusts 28 mph45 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 59°, low 31°.
Tomorrow
Dry, high 62°, low 34°, warming up.
Sunday
Dry, high 65°, low 37°, warming up.
Rest of week
Mostly dry, highs 59–69°.

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

Rockaway River at Boonton

8.5 mi

Action stage

Level: 305 ft

Reading from Fri 6 PM · NWS gauge page

Rockaway River at Boonton above reservoir

7.5 mi

Below flood stage

Level: 1.0 ft
Flow: 93 cfs

Forecast peak 1.0 ft Fri 8 PM

Reading from Fri 5:30 PM · NWS gauge page

Rockaway River at Boonton below reservoir

8.6 mi

Below flood stage

Level: 1.8 ft
Flow: 23 cfs

Forecast peak 1.9 ft Fri 8 PM

Reading from Fri 6 PM · NWS gauge page

Pequannock River at Macopin

12 mi

Below flood stage

Level: 2.7 ft
Flow: 45 cfs

Forecast peak 2.8 ft Fri 8 PM

Reading from Fri 6:10 PM · NWS gauge page

For your home

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

Heating this week

About 65% less heating than a typical week.

This week 37Typical 107

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 28
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 33°F).

Open the windows?

Sat, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Boonton 1 SE · official normals 1991–2020 · records 1892–2026

Oct 23, today vs a typical year

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

Last 7 days vs normal

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

+7°+4°SatOct 17
−11°−6°SunOct 18
−6°−3°MonOct 19
−1°TueOct 20
+7°+4°WedOct 21
+2°+1°ThuOct 22
+3°+2°FriOct 23

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

Sun & moon

Sun

Daylight: 10 h 47 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 33 min less
Golden hour: 5:28–6:23 PM; Morning 7:01–7:56 AM
Blue hour: 6:23–6:33 PM; Morning 6:50–7:01 AM; first light 6:50 AM

Stars tonight? Fair

Mostly clear 11 PM–5 AM, but the moon is 95% lit and up.

Moon

Waxing gibbous

94% lit · growing

Today: sets 4:21 AM · rises 4:37 PM
Full moon: Oct 26
New moon: Nov 9

Looking northwest from Dover. The highest point on the skyline is about 2,000 ft, 12 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

Freeze Warning

Dover, NJ weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Rockaway River at Boonton

Rockaway River at Boonton above reservoir

Rockaway River at Boonton below reservoir

Pequannock River at Macopin

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 23, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon