Freeze Watch
Starts in 14 h 31 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 9:00 AM EDT at KRDG

West Lawn, PA weather

Sunny and 50°10°.

Forecasts agree

Now 50°10°

Sunny

Wind: 3 mph5 km/h; From the north. 35–10 mph16 km/h through 9 PM
Dew point: 39°4°; Comfortable · down to 31°−1° by 2 PM (dry)
UV index: 1Low; Moderate 11 AM–4 PM · peak 4
Pressure: 30.35 inHg1028 hPa; Rising · +0.07 inHg+2.4 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 10 AM
High 61°16° today at 3 PM
Below 50°10° tonight after 8 PM
Low 34°1° tomorrow at 6 AM

This morningUp to 54°12° by 11 AM · Clear
This afternoonUp to 61°16° by 3 PM · Clear
TonightDown to 35°2° by 3 AM · Partly cloudy
Tomorrow morningUp to 54°12° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 62°17° by 4 PM · Clear
Tomorrow nightDown to 34°1° by 4 AM · Clear
Sunday morningNear 34°1° · 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 9a	Sunny	46°8° (likely 46°8° to 49°9°)	43°6°	0%	5 mph8 km/h from N, gusts 7 mph12 km/h	68%	0%	1
Fri 10a	Sunny	51°11° (likely 51°11° to 54°12°)	51°11°	0%	10 mph16 km/h from NE, gusts 13 mph21 km/h	59%	0%	2
Fri 11a	Sunny	54°12° (likely 54°12° to 56°13°)	54°12°	0%	10 mph16 km/h from NE, gusts 17 mph28 km/h	52%	5%	3
Fri 12p	Sunny	57°14° (likely 57°14° to 58°14°)	57°14°	0%	10 mph16 km/h from NE, gusts 15 mph24 km/h	43%	4%	4
Fri 1p	Sunny	58°14° (likely 58°14° to 60°16°)	58°14°	0%	10 mph16 km/h from NE, gusts 13 mph20 km/h	39%	1%	4
Fri 2p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	10 mph16 km/h from NE, gusts 11 mph17 km/h	33%	1%	4
Fri 3p	Sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	5 mph8 km/h from NE, gusts 10 mph17 km/h	32%	1%	3
Fri 4p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	5 mph8 km/h from NE, gusts 9 mph14 km/h	33%	2%	2
Fri 5p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from NE, gusts 9 mph14 km/h	35%	36%	1
Fri 6p	Mostly clear	58°14° (likely 54°12° to 58°14°)	58°14°	0%	5 mph8 km/h from NE, gusts 7 mph12 km/h	37%	40%	0
Fri 7p	Mostly clear	53°12° (likely 51°11° to 53°12°)	53°12°	0%	5 mph8 km/h from NE, gusts 4 mph7 km/h	41%	46%	0
Fri 8p	Partly cloudy	48°9° (likely 48°9° to 50°10°)	45°7°	0%	5 mph8 km/h from NE, gusts 5 mph8 km/h	46%	68%	0
Fri 9p	Partly cloudy	46°8° (likely 46°8° to 48°9°)	43°6°	0%	5 mph8 km/h from NE, gusts 5 mph8 km/h	45%	70%	0
Fri 10p	Partly cloudy	43°6° (likely 43°6° to 47°8°)	40°4°	0%	5 mph8 km/h from NE, gusts 5 mph8 km/h	51%	69%	0
Fri 11p	Partly cloudy	41°5° (likely 41°5° to 45°7°)	38°3°	0%	5 mph8 km/h from NE, gusts 5 mph7 km/h	55%	50%	0
Sat 12a	Partly cloudy	39°4° (likely 39°4° to 44°7°)	36°2°	0%	5 mph8 km/h from NE, gusts 3 mph5 km/h	59%	44%	0
Sat 1a	Clear	38°3° (likely 38°3° to 42°6°)	34°1°	0%	5 mph8 km/h from NE, gusts 2 mph4 km/h	62%	40%	0
Sat 2a	Clear	37°3° (likely 37°3° to 41°5°)	33°1°	0%	5 mph8 km/h from NE, gusts 2 mph4 km/h	64%	28%	0
Sat 3a	Clear	35°2° (likely 35°2° to 40°4°)	31°−1°	0%	5 mph8 km/h from NE, gusts 1 mph2 km/h	69%	35%	0
Sat 4a	Mostly clear	35°2° (likely 35°2° to 39°4°)	32°0°	0%	5 mph8 km/h from NE, gusts 2 mph3 km/h	72%	45%	0
Sat 5a	Mostly clear	35°2° (likely 35°2° to 38°3°)	32°0°	0%	5 mph8 km/h from NE, gusts 2 mph3 km/h	72%	35%	0
Sat 6a	Mostly clear	34°1° (likely 34°1° to 38°3°)	31°−1°	0%	5 mph8 km/h from NE, gusts 2 mph4 km/h	72%	54%	0
Sat 7a	Sunny	34°1° (likely 34°1° to 37°3°)	31°−1°	0%	5 mph8 km/h from NE, gusts 2 mph4 km/h	72%	30%	0
Sat 8a	Sunny	36°2° (likely 35°2° to 38°3°)	32°0°	0%	5 mph8 km/h from NE, gusts 3 mph4 km/h	72%	28%	0
Sat 9a	Partly sunny	41°5° (likely 39°4° to 43°6°)	38°3°	0%	5 mph8 km/h from NE, gusts 2 mph3 km/h	65%	22%	1
Sat 10a	Partly sunny	48°9° (likely 47°8° to 49°9°)	47°8°	0%	5 mph8 km/h from NE, gusts 3 mph4 km/h	56%	22%	2
Sat 11a	Sunny	54°12° (likely 52°11° to 54°12°)	54°12°	0%	5 mph8 km/h from E, gusts 5 mph8 km/h	50%	11%	3
Sat 12p	Sunny	56°13° (likely 56°13° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 5 mph7 km/h	47%	2%	3
Sat 1p	Sunny	59°15° (likely 58°14° to 60°16°)	59°15°	0%	5 mph8 km/h from S, gusts 5 mph8 km/h	40%	3%	4
Sat 2p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	5 mph8 km/h from S, gusts 5 mph7 km/h	39%	5%	4
Sat 3p	Mostly sunny	61°16° (likely 60°16° to 62°17°)	61°16°	0%	5 mph8 km/h from SW, gusts 4 mph7 km/h	36%	8%	3
Sat 4p	Mostly sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	5 mph8 km/h from SW, gusts 4 mph7 km/h	36%	9%	2
Sat 5p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from SW, gusts 5 mph8 km/h	38%	22%	1
Sat 6p	Clear	58°14° (likely 54°12° to 58°14°)	58°14°	0%	5 mph8 km/h from SW, gusts 6 mph9 km/h	39%	39%	0
Sat 7p	Mostly clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	5 mph8 km/h from S, gusts 6 mph9 km/h	43%	20%	0
Sat 8p	Clear	47°8° (likely 47°8° to 51°11°)	44°7°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	53%	2%	0
Sat 9p	Clear	45°7° (likely 45°7° to 50°10°)	42°6°	0%	5 mph8 km/h from S, gusts 6 mph10 km/h	55%	7%	0
Sat 10p	Clear	43°6° (likely 43°6° to 48°9°)	40°4°	0%	5 mph8 km/h from S, gusts 5 mph9 km/h	60%	0%	0
Sat 11p	Clear	41°5° (likely 41°5° to 46°8°)	39°4°	0%	5 mph8 km/h from S, gusts 4 mph7 km/h	65%	0%	0
Sun 12a	Clear	39°4° (likely 39°4° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	73%	0%	0
Sun 1a	Clear	38°3° (likely 38°3° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	79%	0%	0
Sun 2a	Clear	36°2° (likely 36°2° to 43°6°)	33°1°	0%	5 mph8 km/h from NW, gusts 2 mph3 km/h	89%	0%	0
Sun 3a	Clear	35°2° (likely 32°0° to 42°6°)	32°0°	0%	5 mph8 km/h from NW, gusts 1 mph2 km/h	96%	0%	0
Sun 4a	Clear	34°1° (likely 31°−1° to 42°6°)	30°−1°	0%	5 mph8 km/h from NW, gusts 2 mph3 km/h	100%	0%	0
Sun 5a	Clear	34°1° (likely 30°−1° to 41°5°)	30°−1°	0%	5 mph8 km/h from NW, gusts 2 mph3 km/h	100%	0%	0
Sun 6a	Clear	33°1° (likely 29°−2° to 41°5°)	29°−2°	0%	5 mph8 km/h from NW, gusts 1 mph2 km/h	100%	0%	0
Sun 7a	Sunny	33°1° (likely 28°−2° to 40°4°)	29°−2°	0%	5 mph8 km/h from NW, gusts 1 mph2 km/h	100%	0%	0
Sun 8a	Sunny	35°2° (likely 29°−2° to 41°5°)	31°−1°	0%	5 mph8 km/h from NW, gusts 2 mph3 km/h	100%	0%	0

Days ahead

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

Today, Oct 23. Mostly sunny. High 61°16°, low 33°1°. Typical 63°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Today: Sunny, with a high near 61. Northeast wind 5 to 10 mph, with gusts as high as 25 mph.
Tonight: Areas of frost after midnight. Mostly clear, with a low around 33. Northeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–61°16°
Low, likely
33°1°–44°7°
Typical high / low
63°17° / 42°6°
Wind
11 mph18 km/h, gusts 20 mph32 km/h
UV peak
4
Tomorrow, Oct 24. Mostly sunny. High 62°17°, low 33°1°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny, with a high near 62. Southeast wind 0 to 5 mph.
Night: Areas of frost after midnight. Mostly clear, with a low around 33. Southwest wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
33°1°–37°3°
Typical high / low
62°17° / 42°6°
Wind
7 mph12 km/h
UV peak
4
Sunday, Oct 25. Sunny. High 65°18°, low 35°2°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  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, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Widespread frost before 9am. Sunny, with a high near 65. Northwest wind around 5 mph.
Night: Mostly clear, with a low around 35.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–65°18°
Low, likely
31°−1°–39°4°
Typical high / low
62°17° / 42°6°
Wind
6 mph9 km/h, gusts 11 mph18 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 70°21°, low 45°7°. Typical 62°17° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  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 70.
Night: Mostly clear, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–70°21°
Low, likely
32°0°–45°7°
Typical high / low
62°17° / 41°5°
Wind
8 mph13 km/h, gusts 16 mph26 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 65°18°, low 40°4°. Typical 61°16° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 65.
Night: Mostly clear, with a low around 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–67°19°
Low, likely
40°4°–48°9°
Typical high / low
61°16° / 41°5°
Wind
8 mph12 km/h, gusts 20 mph32 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 62°17°, low 42°6°. Typical 61°16° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 62.
Night: Mostly cloudy, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–63°17°
Low, likely
37°3°–46°8°
Typical high / low
61°16° / 41°5°
Wind
8 mph13 km/h, gusts 14 mph22 km/h
UV peak
2
Thursday, Oct 29. Partly sunny. High 66°19°, low 44°7°. Typical 61°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  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 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–69°21°
Low, likely
40°4°–50°10°
Typical high / low
61°16° / 40°4°
Wind
12 mph19 km/h, gusts 29 mph47 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 67°19°, low 48°9°. Typical 60°16° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  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
63°17°–70°21°
Low, likely
43°6°–50°10°
Typical high / low
60°16° / 40°4°
Wind
7 mph11 km/h, gusts 22 mph35 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 60°16°, low 45°7°. Typical 60°16° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  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
54°12°–66°19°
Low, likely
38°3°–54°12°
Typical high / low
60°16° / 40°4°
Wind
9 mph14 km/h, gusts 23 mph37 km/h
UV peak
2
Sunday, Nov 1. Showers. High 61°16°, low 47°8°. Typical 59°15° / 40°4°. Rain 0.57 in14 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  20% chance · 0.09 in2.3 mm
2. Afternoon
  noon–6 PM
  Rain, 56°13°
  20% chance · 0.2 in5.1 mm
3. Evening
  6 PM–midnight
  Rain, 51°11°
  30% chance · 0.27 in6.8 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
57°14°–65°18°
Low, likely
36°2°–55°13°
Typical high / low
59°15° / 40°4°
Wind
11 mph18 km/h, gusts 27 mph43 km/h

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 33°.
Tomorrow
Dry, high 62°, low 33°.
Sunday
Dry, high 65°, low 35°, 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

Schuylkill River at Reading

3.0 mi

Below flood stage

Level: 3.5 ft
Flow: 791 cfs

Forecast peak 3.5 ft Fri 2 PM

Reading from Fri 8:15 AM · NWS gauge page

Schuylkill River at Berne

13 mi

Below flood stage

Level: 5.1 ft
Flow: 282 cfs

Forecast peak 5.1 ft Fri 2 PM

Reading from Fri 8 AM · NWS gauge page

Schuylkill River at Pottstown

19 mi

Below flood stage

Level: 2.1 ft
Flow: 944 cfs

Forecast peak 2.1 ft Fri 2 PM

Reading from Fri 8:15 AM · NWS gauge page

Conestoga River at Lancaster

24 mi

Below flood stage

Level: 3.7 ft
Flow: 274 cfs

Forecast peak 3.6 ft Fri 2 PM

Reading from Fri 8:15 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 36Typical 95

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 26
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 7 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 39°F).

Open the windows?

Today, 2:00 PM–5:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

Reading Regional Airport · official normals 1991–2020 · records 1888–2026

Oct 23, today vs a typical year

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

Last 7 days vs normal

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

−6°−4°SatOct 17
−8°−4°SunOct 18
−2°−1°MonOct 19
+1°±0°TueOct 20
−1°WedOct 21
−1°ThuOct 22
—FriOct 23

West Lawn 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 31 min less
Golden hour: 5:34–6:29 PM; Morning 7:06–8:01 AM
Blue hour: 6:29–6:40 PM; Morning 6:55–7:06 AM; first light 6:55 AM

Stars tonight? Poor

Clouds most of the night (about 48% cover).

Moon

Waxing gibbous

92% lit · growing

Today: sets 4:27 AM · rises 4:43 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from West Lawn. The highest point on the skyline is about 3,500 ft, 13 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

West Lawn, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Schuylkill River at Reading

Schuylkill River at Berne

Schuylkill River at Pottstown

Conestoga River at Lancaster

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