Freeze Watch
Starts in 10 h 26 min
When
From late tonight through Saturday morning.
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 32 possible.
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 12:15 PM EDT at KABE

Fullerton, PA weather

Sunny and 57°14°, jacket by 7 PM.

Forecasts agree

Now 57°14°

Sunny

Wind: 12 mph19 km/h; From the north-northeast. 58–12 mph19 km/h through 1 AM
Dew point: 36°2°; Comfortable · down to 26°−3° by 8 PM (dry)
UV index: 3Moderate; Moderate until 3 PM
Air quality: 34Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.38 inHg1029 hPa; Falling slowly · −0.02 inHg−0.6 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 61°16° today at 3 PM
Below 50°10° tonight after 8 PM
Low 32°0° tomorrow at 6 AM
Above 50°10° tomorrow by 11 AM
Below freezing tomorrow night 5–8 AM (low 31°−1°)

This afternoonNear 59°15° · Clear
TonightDown to 33°1° by 5 AM · Partly cloudy
Tomorrow morningUp to 53°12° by 11 AM · freezing, low 32°0° · Partly cloudy
Tomorrow afternoonUp to 62°17° by 4 PM · Clear
Tomorrow nightDown to 32°0° by 5 AM · freezing, low 32°0° · Clear
Sunday morningUp to 54°12° by 11 AM · freezing, low 31°−1° · Clear

Hourly forecast, next 47 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Fri 1p	Sunny	58°14° (likely 57°14° to 59°15°)	58°14°	0%	10 mph16 km/h from NE, gusts 12 mph19 km/h	36%	1%	3
Fri 2p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	10 mph16 km/h from NE, gusts 13 mph20 km/h	33%	0%	3
Fri 3p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	5 mph8 km/h from NE, gusts 11 mph18 km/h	32%	0%	2
Fri 4p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from NE, gusts 11 mph17 km/h	33%	0%	1
Fri 5p	Sunny	60°16° (likely 57°14° to 60°16°)	60°16°	0%	5 mph8 km/h from NE, gusts 9 mph15 km/h	35%	2%	0
Fri 6p	Clear	58°14° (likely 53°12° to 58°14°)	58°14°	0%	5 mph8 km/h from NE, gusts 7 mph12 km/h	36%	5%	0
Fri 7p	Partly cloudy	52°11° (likely 50°10° to 52°11°)	52°11°	0%	5 mph8 km/h from NE, gusts 7 mph12 km/h	39%	43%	0
Fri 8p	Partly cloudy	48°9° (likely 47°8° to 50°10°)	45°7°	0%	5 mph8 km/h from NE, gusts 6 mph10 km/h	42%	68%	0
Fri 9p	Partly cloudy	45°7° (likely 45°7° to 48°9°)	42°6°	0%	5 mph8 km/h from NE, gusts 4 mph7 km/h	45%	70%	0
Fri 10p	Partly cloudy	41°5° (likely 41°5° to 47°8°)	37°3°	0%	5 mph8 km/h from NE, gusts 4 mph6 km/h	50%	56%	0
Fri 11p	Partly cloudy	40°4° (likely 40°4° to 46°8°)	36°2°	0%	5 mph8 km/h from NE, gusts 5 mph7 km/h	52%	51%	0
Sat 12a	Clear	38°3° (likely 38°3° to 44°7°)	34°1°	0%	5 mph8 km/h from NE, gusts 5 mph8 km/h	57%	45%	0
Sat 1a	Clear	36°2° (likely 36°2° to 42°6°)	31°−1°	0%	5 mph8 km/h from NE, gusts 5 mph8 km/h	61%	38%	0
Sat 2a	Clear	35°2° (likely 35°2° to 41°5°)	30°−1°	0%	5 mph8 km/h from NE, gusts 4 mph7 km/h	64%	38%	0
Sat 3a	Partly cloudy	34°1° (likely 34°1° to 40°4°)	30°−1°	0%	5 mph8 km/h from NE, gusts 4 mph6 km/h	66%	44%	0
Sat 4a	Partly cloudy	34°1° (likely 34°1° to 39°4°)	30°−1°	0%	5 mph8 km/h from NE, gusts 3 mph4 km/h	69%	51%	0
Sat 5a	Partly cloudy	33°1° (likely 33°1° to 39°4°)	29°−2°	0%	5 mph8 km/h from NE, gusts 2 mph4 km/h	72%	66%	0
Sat 6a	Partly cloudy	32°0° (likely 32°0° to 38°3°)	29°−2°	0%	5 mph8 km/h from N, gusts 3 mph4 km/h	75%	64%	0
Sat 7a	Cloudy	33°1° (likely 33°1° to 37°3°)	30°−1°	0%	5 mph8 km/h from N, gusts 3 mph4 km/h	72%	67%	0
Sat 8a	Mostly sunny	34°1° (likely 33°1° to 38°3°)	30°−1°	0%	5 mph8 km/h from N, gusts 3 mph5 km/h	72%	39%	0
Sat 9a	Cloudy	39°4° (likely 37°3° to 42°6°)	37°3°	0%	5 mph8 km/h from NE, gusts 2 mph4 km/h	64%	62%	1
Sat 10a	Partly sunny	47°8° (likely 46°8° to 48°9°)	46°8°	0%	5 mph8 km/h from NE, gusts 4 mph6 km/h	53%	52%	2
Sat 11a	Mostly sunny	53°12° (likely 51°11° to 54°12°)	53°12°	0%	5 mph8 km/h from E, gusts 2 mph3 km/h	46%	43%	3
Sat 12p	Sunny	56°13° (likely 55°13° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 3 mph5 km/h	42%	2%	4
Sat 1p	Sunny	59°15° (likely 57°14° to 59°15°)	59°15°	0%	5 mph8 km/h from S, gusts 4 mph6 km/h	37%	0%	4
Sat 2p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from SW, gusts 4 mph6 km/h	35%	0%	4
Sat 3p	Sunny	61°16° (likely 59°15° to 62°17°)	61°16°	0%	5 mph8 km/h from SW, gusts 3 mph5 km/h	35%	1%	3
Sat 4p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from SW, gusts 3 mph5 km/h	35%	2%	2
Sat 5p	Sunny	61°16° (likely 57°14° to 61°16°)	61°16°	0%	5 mph8 km/h from SW, gusts 3 mph5 km/h	36%	2%	1
Sat 6p	Clear	58°14° (likely 53°12° to 58°14°)	58°14°	0%	5 mph8 km/h from SW, gusts 4 mph6 km/h	39%	0%	0
Sat 7p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	5 mph8 km/h from SW, gusts 4 mph7 km/h	43%	0%	0
Sat 8p	Clear	47°8° (likely 47°8° to 50°10°)	44°7°	0%	5 mph8 km/h from SW, gusts 4 mph6 km/h	53%	0%	0
Sat 9p	Clear	44°7° (likely 44°7° to 48°9°)	41°5°	0%	5 mph8 km/h from SW, gusts 2 mph4 km/h	57%	0%	0
Sat 10p	Clear	42°6° (likely 42°6° to 46°8°)	38°3°	0%	5 mph8 km/h from SW, gusts 2 mph3 km/h	62%	0%	0
Sat 11p	Clear	40°4° (likely 40°4° to 45°7°)	37°3°	0%	5 mph8 km/h from SW, gusts 2 mph3 km/h	67%	0%	0
Sun 12a	Clear	38°3° (likely 38°3° to 43°6°)	36°2°	0%	5 mph8 km/h from W, gusts 2 mph3 km/h	76%	0%	0
Sun 1a	Clear	36°2° (likely 36°2° to 42°6°)	33°1°	0%	5 mph8 km/h from W, gusts 3 mph4 km/h	85%	0%	0
Sun 2a	Clear	35°2° (likely 35°2° to 41°5°)	31°−1°	0%	5 mph8 km/h from NW, gusts 2 mph4 km/h	92%	0%	0
Sun 3a	Clear	34°1° (likely 34°1° to 40°4°)	30°−1°	0%	5 mph8 km/h from NW, gusts 2 mph2 km/h	96%	0%	0
Sun 4a	Clear	33°1° (likely 33°1° to 40°4°)	29°−2°	0%	5 mph8 km/h from NW, gusts 2 mph3 km/h	100%	0%	0
Sun 5a	Clear	32°0° (likely 32°0° to 39°4°)	27°−3°	0%	5 mph8 km/h from NW, gusts 2 mph3 km/h	100%	0%	0
Sun 6a	Clear	31°−1° (likely 31°−1° to 37°3°)	26°−3°	0%	5 mph8 km/h from NW, gusts 2 mph3 km/h	100%	0%	0
Sun 7a	Sunny	31°−1° (likely 31°−1° to 38°3°)	26°−3°	0%	5 mph8 km/h from NW, gusts 2 mph4 km/h	100%	0%	0
Sun 8a	Sunny	33°1° (likely 29°−2° to 40°4°)	29°−2°	0%	5 mph8 km/h from NW, gusts 2 mph4 km/h	100%	0%	0
Sun 9a	Sunny	39°4° (likely 30°−1° to 48°9°)	36°2°	0%	5 mph8 km/h from NW, gusts 3 mph5 km/h	89%	1%	1
Sun 10a	Sunny	47°8° (likely 38°3° to 52°11°)	45°7°	0%	5 mph8 km/h from N, gusts 3 mph4 km/h	68%	1%	2
Sun 11a	Sunny	54°12° (likely 46°8° to 56°13°)	54°12°	0%	5 mph8 km/h from N, gusts 4 mph6 km/h	57%	0%	3

Days ahead

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

Today, Oct 23. Cloudy. High 61°16°, low 31°−1°. Typical 63°17° / 41°5°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
2. Evening
  6 PM–midnight
  Partly cloudy, 48°9°
  Dry
3. Overnight
  midnight–6 AM
  Partly cloudy, 33°1°
  Dry
Official NWS forecast
Today: Sunny, with a high near 61. Northeast wind 5 to 10 mph.
Tonight: Areas of frost after midnight. Partly cloudy, with a low around 31. Northeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–61°16°
Low, likely
31°−1°–43°6°
Typical high / low
63°17° / 41°5°
Wind
10 mph16 km/h, gusts 19 mph30 km/h
UV peak
4
Tomorrow, Oct 24. Mostly sunny. High 62°17°, low 31°−1°. Typical 62°17° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 32°0°
  Dry
Official NWS forecast
Day: Widespread frost before 10am. Sunny, with a high near 62. Southeast wind 0 to 5 mph.
Night: Widespread frost after 11pm. Mostly clear, with a low around 31. West wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–62°17°
Low, likely
31°−1°–37°3°
Typical high / low
62°17° / 41°5°
Wind
5 mph8 km/h
UV peak
4
Sunday, Oct 25. Sunny. High 66°19°, low 34°1°. Typical 62°17° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Day: Widespread frost before 10am. Sunny, with a high near 66. West wind around 5 mph.
Night: Mostly clear, with a low around 34.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–66°19°
Low, likely
29°−2°–36°2°
Typical high / low
62°17° / 41°5°
Wind
5 mph9 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 71°22°, low 44°7°. Typical 62°17° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 71.
Night: Mostly clear, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–71°22°
Low, likely
29°−2°–44°7°
Typical high / low
62°17° / 40°4°
Wind
8 mph12 km/h, gusts 15 mph24 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 64°18°, low 37°3°. Typical 61°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 64.
Night: Mostly clear, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–65°18°
Low, likely
37°3°–48°9°
Typical high / low
61°16° / 40°4°
Wind
7 mph12 km/h, gusts 16 mph26 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 61°16°, low 40°4°. Typical 61°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  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 61.
Night: Mostly cloudy, with a low around 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–62°17°
Low, likely
35°2°–42°6°
Typical high / low
61°16° / 40°4°
Wind
7 mph11 km/h, gusts 13 mph21 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 66°19°, low 43°6°. Typical 61°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°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 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–68°20°
Low, likely
39°4°–46°8°
Typical high / low
61°16° / 39°4°
Wind
13 mph21 km/h, gusts 27 mph44 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 66°19°, low 47°8°. Typical 60°16° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–71°22°
Low, likely
43°6°–49°9°
Typical high / low
60°16° / 39°4°
Wind
8 mph13 km/h, gusts 17 mph27 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 59°15°, low 43°6°. Typical 60°16° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 57°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.
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
53°12°–67°19°
Low, likely
36°2°–51°11°
Typical high / low
60°16° / 39°4°
Wind
10 mph15 km/h, gusts 23 mph36 km/h
UV peak
3
Sunday, Nov 1. Rain. High 60°16°, low 45°7°. Typical 60°16° / 38°3°. Rain 0.11 in2.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Rain, 54°12°
  20% chance · 0.07 in1.8 mm
3. Evening
  6 PM–midnight
  Fog, 47°9°
  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
56°13°–66°19°
Low, likely
34°1°–52°11°
Typical high / low
60°16° / 38°3°
Wind
8 mph14 km/h, gusts 26 mph42 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 31°.
Tomorrow
Dry, high 62°, low 31°.
Sunday
Dry, high 66°, low 34°, warming up.
Rest of week
Mostly dry, highs 59–71°.

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

Jordan Creek at Allentown

0.5 mi

Below flood stage

Level: 1.7 ft
Flow: 39 cfs

Forecast peak 1.7 ft Fri 2 PM

Reading from Fri 12:15 PM · NWS gauge page

Lehigh River at Bethlehem

5.4 mi

Below flood stage

Level: 1.7 ft
Flow: 1,100 cfs

Forecast peak 1.7 ft Fri 2 PM

Reading from Fri 11:30 AM · NWS gauge page

Lehigh River at Walnutport

11 mi

Below flood stage

Level: 2.5 ft
Flow: 761 cfs

Forecast peak 2.5 ft Fri 2 PM

Reading from Fri 11:30 AM · NWS gauge page

Delaware River at Easton

15 mi

Below flood stage

Level: 1.8 ft

Forecast peak 1.8 ft Fri 2 PM

Reading from Fri 11:30 AM · NWS gauge page

For your home

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

Heating this week

About 61% less heating than a typical week.

This week 39Typical 98

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 29
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 9 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Today, 2:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Allentown Lehigh Valley International Airport · official normals 1991–2020 · records 1922–2026

Oct 23, today vs a typical year

Today’s expected high is 2°1° colder than typical.

Last 7 days vs normal

On average 4°2° colder than normal (daily mean temperature).

−9°−5°SatOct 17
−8°−5°SunOct 18
−3°−2°MonOct 19
+1°±0°TueOct 20
−3°−2°WedOct 21
±0°ThuOct 22
—FriOct 23

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

Sun & moon

Sun

Daylight: 10 h 48 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 32 min less
Golden hour: 5:32–6:27 PM; Morning 7:04–7:59 AM
Blue hour: 6:27–6:37 PM; Morning 6:54–7:04 AM; first light 6:54 AM

Stars tonight? Poor

Clouds most of the night (about 49% cover).

Moon

Waxing gibbous

93% lit · growing

Today: sets 4:25 AM · rises 4:41 PM
Full moon: Oct 26
New moon: Nov 9

Looking northwest from Fullerton. The highest point on the skyline is about 2,100 ft, 24 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 Watch

Fullerton, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Jordan Creek at Allentown

Lehigh River at Bethlehem

Lehigh River at Walnutport

Delaware River at Easton

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? Poor

Moon