Freeze Warning
Ends in 2 h 52 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 5:35 AM EDT at KMQS

Atglen, PA weather

Freeze Warning. 36°2° and clear now.

Forecasts agree

Now 36°2°

Clear

Wind: Calm; Light through 6 PM
Dew point: 36°2°; Comfortable
Humidity: 100%; Air 36°2°, dew point 36°2° · fog or dew likely
UV index: 0Low; Moderate 12–3 PM · peak 3
Pressure: 30.49 inHg1033 hPa; Rising slowly · +0.02 inHg+0.7 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

13°7° cooler than this time yesterday (49°9° then, 36°2° now)

Good hours for

Low 33°1° today at 7 AM
Above 50°10° today by 11 AM
High 61°16° today at 4 PM
Below 50°10° tonight after 8 PM

This morningUp to 53°12° by 11 AM · Clear
This afternoonUp to 61°16° by 4 PM · Clear
TonightDown to 38°3° by 5 AM · Clear
Tomorrow morningUp to 55°13° by 11 AM · Clear
Tomorrow afternoonUp to 63°17° by 3 PM · Clear
Tomorrow nightDown to 40°4° 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 6a	Clear	34°1° (likely 34°1° to 40°4°)	34°1°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	11%	0
Sat 7a	Sunny	33°1° (likely 33°1° to 39°4°)	33°1°	0%	0 mph0 km/h, gusts 4 mph6 km/h	92%	18%	0
Sat 8a	Sunny	35°2° (likely 35°2° to 39°4°)	35°2°	0%	0 mph0 km/h, gusts 4 mph7 km/h	89%	20%	0
Sat 9a	Sunny	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 4 mph7 km/h	79%	0%	0
Sat 10a	Sunny	49°9° (likely 49°9° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	61%	0%	1
Sat 11a	Sunny	53°12° (likely 53°12° to 56°13°)	53°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	52%	0%	2
Sat 12p	Sunny	55°13° (likely 55°13° to 58°14°)	55°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	47%	0%	3
Sat 1p	Sunny	57°14° (likely 57°14° to 60°16°)	57°14°	0%	0 mph0 km/h, gusts 4 mph7 km/h	43%	0%	3
Sat 2p	Sunny	59°15° (likely 58°14° to 60°16°)	59°15°	0%	0 mph0 km/h, gusts 3 mph5 km/h	39%	0%	3
Sat 3p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	0 mph0 km/h, gusts 3 mph5 km/h	37%	0%	2
Sat 4p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 3 mph5 km/h	36%	0%	1
Sat 5p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 3 mph5 km/h	36%	0%	0
Sat 6p	Clear	57°14° (likely 53°12° to 57°14°)	57°14°	0%	0 mph0 km/h, gusts 4 mph6 km/h	43%	0%	0
Sat 7p	Clear	52°11° (likely 49°9° to 53°12°)	52°11°	0%	0 mph0 km/h, gusts 4 mph6 km/h	54%	0%	0
Sat 8p	Clear	47°8° (likely 47°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	68%	0%	0
Sat 9p	Clear	45°7° (likely 44°7° to 47°8°)	45°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	70%	0%	0
Sat 10p	Clear	44°7° (likely 43°6° to 46°8°)	44°7°	0%	0 mph0 km/h, gusts 5 mph7 km/h	73%	0%	0
Sat 11p	Clear	42°6° (likely 42°6° to 45°7°)	42°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	79%	0%	0
Sun 12a	Clear	42°6° (likely 42°6° to 44°7°)	42°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	79%	0%	0
Sun 1a	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	0%	0
Sun 2a	Clear	41°5° (likely 41°5° to 43°6°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	79%	0%	0
Sun 3a	Clear	39°4° (likely 39°4° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	82%	0%	0
Sun 4a	Clear	39°4° (likely 39°4° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	82%	0%	0
Sun 5a	Clear	38°3° (likely 38°3° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	85%	0%	0
Sun 6a	Clear	37°3° (likely 37°3° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	85%	0%	0
Sun 7a	Sunny	37°3° (likely 37°3° to 39°4°)	37°3°	0%	0 mph0 km/h, gusts 3 mph4 km/h	85%	0%	0
Sun 8a	Sunny	37°3° (likely 37°3° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	0%	0
Sun 9a	Sunny	43°6° (likely 40°4° to 45°7°)	43°6°	0%	0 mph0 km/h, gusts 3 mph6 km/h	76%	0%	1
Sun 10a	Sunny	51°11° (likely 49°9° to 52°11°)	51°11°	0%	0 mph0 km/h, gusts 4 mph6 km/h	63%	0%	2
Sun 11a	Sunny	55°13° (likely 55°13° to 57°14°)	55°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	55%	1%	3
Sun 12p	Sunny	58°14° (likely 57°14° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 5 mph7 km/h	47%	1%	4
Sun 1p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	42%	1%	4
Sun 2p	Sunny	62°17° (likely 60°16° to 63°17°)	62°17°	0%	0 mph0 km/h, gusts 4 mph7 km/h	41%	2%	4
Sun 3p	Sunny	63°17° (likely 61°16° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	39%	2%	4
Sun 4p	Sunny	63°17° (likely 60°16° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	39%	1%	2
Sun 5p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	41%	1%	1
Sun 6p	Clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 5 mph8 km/h	49%	0%	0
Sun 7p	Clear	54°12° (likely 51°11° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	59%	1%	0
Sun 8p	Clear	49°9° (likely 48°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	74%	1%	0
Sun 9p	Clear	47°8° (likely 46°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	76%	0%	0
Sun 10p	Clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	0 mph0 km/h, gusts 6 mph9 km/h	82%	1%	0
Sun 11p	Clear	44°7° (likely 44°7° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	86%	2%	0
Mon 12a	Clear	43°6° (likely 43°6° to 45°7°)	43°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	89%	1%	0
Mon 1a	Clear	43°6° (likely 42°6° to 45°7°)	43°6°	0%	0 mph0 km/h, gusts 5 mph7 km/h	86%	1%	0
Mon 2a	Clear	42°6° (likely 40°4° to 44°7°)	42°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	89%	2%	0
Mon 3a	Clear	41°5° (likely 38°3° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	0%	0
Mon 4a	Clear	40°4° (likely 37°3° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	92%	0%	0
Mon 5a	Clear	40°4° (likely 35°2° to 43°6°)	40°4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	89%	0%	0

Days ahead

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

Today, Oct 24. Sunny. High 62°17°, low 36°2°. Typical 62°17° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Official NWS forecast
Today: Areas of frost before 10am. Sunny, with a high near 62. East wind around 0 mph.
Tonight: Patchy frost after 10pm. Clear, with a low around 36. North wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–62°17°
Low, likely
35°2°–39°4°
Typical high / low
62°17° / 40°4°
Wind
6 mph10 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 64°18°, low 37°3°. Typical 61°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°4°
  Dry
Official NWS forecast
Day: Patchy frost before 9am. Sunny, with a high near 64. Northwest wind around 0 mph.
Night: Clear, with a low around 37. Northwest wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–64°18°
Low, likely
37°3°–39°4°
Typical high / low
61°16° / 40°4°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Sunny. High 66°19°, low 45°7°. Typical 61°16° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  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 66. Northwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–66°19°
Low, likely
36°2°–45°7°
Typical high / low
61°16° / 40°4°
Wind
9 mph15 km/h, gusts 17 mph28 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 62°17°, low 39°4°. Typical 61°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 62.
Night: Mostly clear, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–64°18°
Low, likely
39°4°–47°8°
Typical high / low
61°16° / 39°4°
Wind
11 mph18 km/h, gusts 24 mph38 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 61°16°, low 43°6°. Typical 60°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 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 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–62°17°
Low, likely
38°3°–43°6°
Typical high / low
60°16° / 39°4°
Wind
7 mph12 km/h, gusts 17 mph27 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 66°19°, low 48°9°. Typical 60°16° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  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: Mostly clear, with a low around 48.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–67°19°
Low, likely
42°6°–48°9°
Typical high / low
60°16° / 38°3°
Wind
9 mph14 km/h, gusts 29 mph47 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 68°20°, low 46°8°. Typical 59°15° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  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 68.
Night: Mostly clear, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–71°22°
Low, likely
43°6°–50°10°
Typical high / low
59°15° / 38°3°
Wind
12 mph19 km/h, gusts 23 mph37 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 69°21°, low 48°9°. Typical 59°15° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  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
59°15°–74°23°
Low, likely
44°7°–51°11°
Typical high / low
59°15° / 38°3°
Wind
11 mph17 km/h, gusts 23 mph36 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 66°19°, low 50°10°. Typical 59°15° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–69°21°
Low, likely
45°7°–54°12°
Typical high / low
59°15° / 37°3°
Wind
11 mph17 km/h, gusts 24 mph38 km/h
UV peak
2
Monday, Nov 2. Cloudy. High 69°21°, low 56°13°. Typical 58°14° / 37°3°. Rain 0.06 in1.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  20% chance
3. Evening
  6 PM–midnight
  Partly cloudy, 59°15°
  30% chance · 0.01 in0.3 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
65°18°–73°23°
Low, likely
53°12°–59°15°
Typical high / low
58°14° / 37°3°
Wind
9 mph14 km/h, gusts 24 mph39 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 36°.
Tomorrow
Dry, high 64°, low 37°.
Monday
Dry, high 66°, low 45°.
Rest of week
Mostly dry, highs 61–69°.

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

Conestoga River at Lancaster

18 mi

Below flood stage

Level: 3.6 ft
Flow: 262 cfs

Forecast peak 3.6 ft Sat 8 AM

Reading from Sat 4:15 AM · NWS gauge page

West Branch Brandywine Creek at Coatesville

8.2 mi

Below flood stage

Level: 3.5 ft
Flow: 15 cfs

Reading from Sat 4:45 AM · NWS gauge page

West Branch Brandywine Creek at Modena

9.2 mi

Below flood stage

Level: 2.9 ft
Flow: 27 cfs

Reading from Sat 4:30 AM · NWS gauge page

West Branch Brandywine Creek at Honeybrook

11 mi

Below flood stage

Level: 1.0 ft
Flow: 13 cfs

Reading from Sat 5 AM · NWS gauge page

For your home

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

Heating this week

About 69% less heating than a typical week.

This week 33Typical 106

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 13 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Today, 3:00 PM–5:00 PM

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

Is this typical?

Octoraro Lake · official normals 1991–2020 · records 1978–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 47 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 27 min less
Golden hour: 5:34–6:28 PM; Morning 7:07–8:01 AM
Blue hour: 6:28–6:39 PM; Morning 6:56–7:07 AM; first light 6:56 AM

Stars tonight? Unknown

Cloud forecast not available for tonight.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:35 AM · rises 5:08 PM
Full moon: Oct 26
New moon: Nov 9

Looking southwest from Atglen. The highest point on the skyline is about 5,200 ft, 21 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

Atglen, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Conestoga River at Lancaster

West Branch Brandywine Creek at Coatesville

West Branch Brandywine Creek at Modena

West Branch Brandywine Creek at Honeybrook

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? Unknown

Moon