Freeze Warning
Ends in 38 min
When
Until 9 AM EDT this 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 31.
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 7:55 AM EDT at KCKZ

Souderton, PA weather

Freeze Warning. 30°−1° and sunny now.

Forecasts agree

Now 30°−1°

Sunny

Wind: Calm; Light through 8 PM
Dew point: 30°−1°; Dry, static shocks likely
Humidity: 100%; Air 30°−1°, dew point 30°−1° · frost likely
UV index: 0Low; Moderate 12–3 PM · peak 3
Pressure: 30.54 inHg1034 hPa; Rising slowly · +0.03 inHg+1.1 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

14°8° cooler than this time yesterday (45°7° then, 30°−1° now)

Good hours for

Above 50°10° today by 11 AM
High 62°17° today at 4 PM
Below 50°10° tonight after 8 PM

This morningUp to 52°11° by 11 AM · Clear
This afternoonUp to 62°17° by 4 PM · Clear
TonightDown to 36°2° by 4 AM · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 4 PM · Clear
Tomorrow nightDown to 38°3° by 5 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 8a	Mostly sunny	33°1° (likely 31°−1° to 38°3°)	33°1°	0%	0 mph0 km/h, gusts 7 mph11 km/h	92%	24%	0
Sat 9a	Mostly sunny	39°4° (likely 38°3° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 6 mph10 km/h	85%	25%	0
Sat 10a	Mostly sunny	47°8° (likely 46°8° to 49°9°)	47°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	65%	19%	1
Sat 11a	Mostly sunny	52°11° (likely 52°11° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 4 mph6 km/h	56%	24%	2
Sat 12p	Sunny	56°13° (likely 55°13° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 3 mph4 km/h	47%	11%	3
Sat 1p	Sunny	58°14° (likely 58°14° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 3 mph4 km/h	42%	14%	3
Sat 2p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	0 mph0 km/h, gusts 2 mph4 km/h	37%	14%	3
Sat 3p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 2 mph4 km/h	36%	12%	2
Sat 4p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 2 mph3 km/h	33%	5%	1
Sat 5p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 2 mph4 km/h	36%	0%	0
Sat 6p	Clear	57°14° (likely 53°12° to 57°14°)	57°14°	0%	0 mph0 km/h, gusts 3 mph4 km/h	43%	0%	0
Sat 7p	Clear	52°11° (likely 51°11° to 52°11°)	52°11°	0%	0 mph0 km/h, gusts 2 mph4 km/h	52%	0%	0
Sat 8p	Clear	47°8° (likely 47°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 2 mph3 km/h	65%	0%	0
Sat 9p	Clear	45°7° (likely 45°7° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 2 mph3 km/h	68%	0%	0
Sat 10p	Clear	44°7° (likely 44°7° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	68%	0%	0
Sat 11p	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	70%	0%	0
Sun 12a	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	73%	0%	0
Sun 1a	Clear	40°4° (likely 40°4° to 43°6°)	40°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	73%	0%	0
Sun 2a	Clear	39°4° (likely 39°4° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	76%	0%	0
Sun 3a	Clear	37°3° (likely 37°3° to 41°5°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	0%	0
Sun 4a	Clear	36°2° (likely 36°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	0%	0
Sun 5a	Clear	36°2° (likely 36°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	0%	0
Sun 6a	Clear	35°2° (likely 35°2° to 38°3°)	35°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	85%	0%	0
Sun 7a	Sunny	35°2° (likely 35°2° to 38°3°)	35°2°	0%	0 mph0 km/h, gusts 4 mph6 km/h	85%	0%	0
Sun 8a	Sunny	36°2° (likely 35°2° to 38°3°)	36°2°	0%	0 mph0 km/h, gusts 4 mph7 km/h	85%	0%	0
Sun 9a	Sunny	41°5° (likely 38°3° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 4 mph7 km/h	82%	0%	1
Sun 10a	Sunny	51°11° (likely 49°9° to 51°11°)	51°11°	0%	0 mph0 km/h, gusts 5 mph8 km/h	61%	0%	2
Sun 11a	Sunny	56°13° (likely 55°13° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 6 mph9 km/h	51%	0%	3
Sun 12p	Sunny	59°15° (likely 57°14° to 61°16°)	59°15°	0%	0 mph0 km/h, gusts 5 mph9 km/h	45%	0%	4
Sun 1p	Sunny	62°17° (likely 59°15° to 63°17°)	62°17°	0%	0 mph0 km/h, gusts 5 mph7 km/h	39%	0%	4
Sun 2p	Sunny	63°17° (likely 60°16° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	38%	0%	4
Sun 3p	Sunny	63°17° (likely 61°16° to 65°18°)	63°17°	0%	0 mph0 km/h, gusts 6 mph10 km/h	38%	0%	3
Sun 4p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	0 mph0 km/h, gusts 7 mph11 km/h	37%	0%	2
Sun 5p	Sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 6 mph10 km/h	39%	0%	1
Sun 6p	Clear	60°16° (likely 55°13° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 5 mph9 km/h	46%	0%	0
Sun 7p	Clear	55°13° (likely 51°11° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 5 mph9 km/h	55%	0%	0
Sun 8p	Clear	49°9° (likely 48°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph7 km/h	68%	0%	0
Sun 9p	Clear	46°8° (likely 46°8° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	76%	0%	0
Sun 10p	Clear	44°7° (likely 44°7° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	0%	0
Sun 11p	Clear	43°6° (likely 43°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	82%	0%	0
Mon 12a	Clear	42°6° (likely 42°6° to 45°7°)	42°6°	0%	0 mph0 km/h, gusts 5 mph8 km/h	86%	0%	0
Mon 1a	Clear	42°6° (likely 41°5° to 44°7°)	42°6°	0%	0 mph0 km/h, gusts 5 mph8 km/h	82%	0%	0
Mon 2a	Clear	41°5° (likely 39°4° to 43°6°)	41°5°	0%	0 mph0 km/h, gusts 5 mph8 km/h	82%	0%	0
Mon 3a	Clear	40°4° (likely 36°2° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 5 mph8 km/h	85%	0%	0
Mon 4a	Clear	39°4° (likely 35°2° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	1%	0
Mon 5a	Clear	38°3° (likely 35°2° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	0%	0
Mon 6a	Mostly clear	37°3° (likely 34°1° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	8%	0
Mon 7a	Mostly sunny	37°3° (likely 33°1° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 6 mph9 km/h	92%	11%	0

Days ahead

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

Today, Oct 24. Sunny. High 63°17°, low 34°1°. Typical 65°18° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 33°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, 36°2°
  Dry
Official NWS forecast
Today: Areas of frost before 10am. Sunny, with a high near 63. North wind around 0 mph.
Tonight: Areas of frost after 10pm. Clear, with a low around 34. Wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–63°17°
Low, likely
31°−1°–37°3°
Typical high / low
65°18° / 41°5°
Wind
5 mph8 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 65°18°, low 37°3°. Typical 65°18° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny, with a high near 65. 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°–65°18°
Low, likely
34°1°–38°3°
Typical high / low
65°18° / 41°5°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Sunny. High 68°20°, low 45°7°. Typical 65°18° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°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, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68. West wind 0 to 5 mph.
Night: Mostly clear, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–68°20°
Low, likely
35°2°–45°7°
Typical high / low
65°18° / 41°5°
Wind
8 mph13 km/h, gusts 18 mph28 km/h
UV peak
4
Tuesday, Oct 27. Sunny. High 62°17°, low 37°3°. Typical 64°18° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  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 37.
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
64°18° / 40°4°
Wind
9 mph15 km/h, gusts 22 mph36 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 61°16°, low 42°6°. Typical 64°18° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  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: Partly cloudy, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–61°16°
Low, likely
35°2°–42°6°
Typical high / low
64°18° / 40°4°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 67°19°, low 47°8°. Typical 64°18° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Night: Mostly clear, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
42°6°–47°8°
Typical high / low
64°18° / 40°4°
Wind
8 mph13 km/h, gusts 29 mph47 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 69°21°, low 45°7°. Typical 63°17° / 39°4°. Dry. Forecasts 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, 57°14°
  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 69.
Night: Mostly clear, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
69°21°–71°22°
Low, likely
44°7°–49°9°
Typical high / low
63°17° / 39°4°
Wind
11 mph18 km/h, gusts 27 mph44 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 68°20°, low 46°8°. Typical 63°17° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–72°22°
Low, likely
43°6°–51°11°
Typical high / low
63°17° / 39°4°
Wind
11 mph18 km/h, gusts 27 mph43 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 65°18°, low 47°8°. Typical 62°17° / 39°4°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 55°13°
  30% chance
4. Overnight
  midnight–6 AM
  Partly cloudy, 52°11°
  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
55°13°–69°21°
Low, likely
35°2°–52°11°
Typical high / low
62°17° / 39°4°
Wind
9 mph15 km/h, gusts 22 mph35 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 65°18°, low 52°11°. Typical 62°17° / 38°3°. Rain 0.05 in1.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  30% chance
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 56°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
52°11°–72°22°
Low, likely
39°4°–58°14°
Typical high / low
62°17° / 38°3°
Wind
9 mph14 km/h, gusts 21 mph33 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 34°.
Tomorrow
Dry, high 65°, low 37°.
Monday
Dry, high 68°, low 45°, warming up.
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

Perkiomen Creek at Graterford

8.9 mi

Below flood stage

Level: 1.1 ft
Flow: 94 cfs

Forecast peak 1.1 ft Sat 2 PM

Reading from Sat 7:15 AM · NWS gauge page

Schuylkill River at Norristown

14 mi

Below flood stage

Level: 8.1 ft
Flow: 1,330 cfs

Forecast peak 8.1 ft Sat 2 PM

Reading from Sat 7:30 AM · NWS gauge page

Schuylkill River at Pottstown

18 mi

Below flood stage

Level: 2.1 ft
Flow: 910 cfs

Forecast peak 2.0 ft Sat 2 PM

Reading from Sat 7:15 AM · NWS gauge page

Delaware River at Stockton

19 mi

Below flood stage

Level: 0.6 ft
Flow: 4,490 cfs

Forecast peak 0.6 ft Sat 2 PM

Reading from Sat 7 AM · NWS gauge page

For your home

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

Heating this week

About 62% less heating than a typical week.

This week 34Typical 89

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 27
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 16 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 30°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.

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?

NORRISTOWN · official normals 1991–2020 · records 1951–2026

Oct 24, 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).

−11°−6°SunOct 18
−6°−3°MonOct 19
−2°−1°TueOct 20
+2°+1°WedOct 21
−1°ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 46 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 29 min less
Golden hour: 5:30–6:25 PM; Morning 7:04–7:59 AM
Blue hour: 6:25–6:36 PM; Morning 6:54–7:04 AM; first light 6:54 AM

Stars tonight? Fair

Clear 6:36 PM–6:55 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:33 AM · rises 5:05 PM
Full moon: Oct 26
New moon: Nov 9

Looking north from Souderton. The highest point on the skyline is about 4,000 ft, 52 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

Souderton, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Perkiomen Creek at Graterford

Schuylkill River at Norristown

Schuylkill River at Pottstown

Delaware River at Stockton

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