Observed 11:51 AM EDT at KABE

Mertztown, PA weather

Sunny and 53°12°, jacket by 7 PM.

Forecasts agree

Now 53°12°

Sunny

Wind: Calm; Light through 12 AM
Dew point: 33°1°; Dry, static shocks likely
UV index: 3Moderate; Moderate until 3 PM
Air quality: 47Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.57 inHg1035 hPa; Falling slowly · −0.02 inHg−0.7 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

3°2° cooler than this time yesterday (56°13° then, 53°12° now)

Good hours for

High 61°16° today at 4 PM
Below 50°10° tonight after 8 PM
Low 34°1° tomorrow at 6 AM
Above 50°10° tomorrow by 11 AM

This afternoonUp to 61°16° by 4 PM · Clear
TonightDown to 35°2° by 5 AM · Clear
Tomorrow morningUp to 54°12° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 4 PM · Clear
Tomorrow nightDown to 38°3° by 3 AM · Clear
Monday morningUp to 56°13° by 11 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 12p	Sunny	54°12° (likely 54°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	48%	8%	3
Sat 1p	Sunny	57°14° (likely 57°14° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 4 mph7 km/h	42%	4%	3
Sat 2p	Sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 4 mph7 km/h	37%	3%	3
Sat 3p	Sunny	60°16° (likely 59°15° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 4 mph7 km/h	36%	0%	2
Sat 4p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 4 mph6 km/h	35%	0%	1
Sat 5p	Sunny	60°16° (likely 57°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 3 mph4 km/h	42%	0%	0
Sat 7p	Clear	52°11° (likely 50°10° to 52°11°)	52°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	50%	0%	0
Sat 8p	Clear	48°9° (likely 48°9° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	56%	0%	0
Sat 9p	Clear	45°7° (likely 45°7° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 4 mph7 km/h	62%	1%	0
Sat 10p	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	67%	0%	0
Sat 11p	Clear	41°5° (likely 41°5° to 47°8°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	73%	0%	0
Sun 12a	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	73%	0%	0
Sun 1a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	73%	0%	0
Sun 2a	Clear	38°3° (likely 38°3° to 44°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph4 km/h	76%	0%	0
Sun 3a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	82%	0%	0
Sun 4a	Clear	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	79%	0%	0
Sun 5a	Clear	35°2° (likely 35°2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	82%	0%	0
Sun 6a	Clear	34°1° (likely 34°1° to 39°4°)	34°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	85%	0%	0
Sun 7a	Sunny	34°1° (likely 34°1° to 39°4°)	34°1°	0%	0 mph0 km/h, gusts 1 mph2 km/h	85%	0%	0
Sun 8a	Sunny	35°2° (likely 34°1° to 39°4°)	35°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	85%	0%	0
Sun 9a	Sunny	41°5° (likely 38°3° to 43°6°)	41°5°	0%	0 mph0 km/h, gusts 2 mph3 km/h	79%	0%	1
Sun 10a	Sunny	49°9° (likely 49°9° to 50°10°)	49°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	63%	0%	2
Sun 11a	Sunny	54°12° (likely 54°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 7 mph12 km/h	52%	0%	3
Sun 12p	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	0 mph0 km/h, gusts 8 mph13 km/h	47%	0%	4
Sun 1p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	0 mph0 km/h, gusts 9 mph15 km/h	42%	0%	4
Sun 2p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 10 mph15 km/h	38%	0%	4
Sun 3p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	38%	1%	3
Sun 4p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	37%	1%	2
Sun 5p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 10 mph15 km/h	41%	0%	1
Sun 6p	Clear	59°15° (likely 54°12° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 7 mph11 km/h	45%	0%	0
Sun 7p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	0 mph0 km/h, gusts 6 mph9 km/h	54%	0%	0
Sun 8p	Clear	49°9° (likely 48°9° to 50°10°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	66%	0%	0
Sun 9p	Clear	47°8° (likely 47°8° to 49°9°)	47°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	71%	0%	0
Sun 10p	Clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	0 mph0 km/h, gusts 7 mph11 km/h	76%	0%	0
Sun 11p	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	0 mph0 km/h, gusts 7 mph11 km/h	82%	0%	0
Mon 12a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 7 mph10 km/h	85%	3%	0
Mon 1a	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 7 mph11 km/h	89%	1%	0
Mon 2a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 7 mph12 km/h	89%	0%	0
Mon 3a	Clear	38°3° (likely 38°3° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 8 mph12 km/h	92%	1%	0
Mon 4a	Clear	38°3° (likely 38°3° to 44°7°)	38°3°	0%	0 mph0 km/h, gusts 8 mph13 km/h	89%	0%	0
Mon 5a	Clear	38°3° (likely 38°3° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 9 mph14 km/h	89%	10%	0
Mon 6a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 8 mph13 km/h	92%	8%	0
Mon 7a	Sunny	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 7 mph11 km/h	89%	13%	0
Mon 8a	Sunny	37°3° (likely 36°2° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 7 mph11 km/h	100%	11%	0
Mon 9a	Sunny	42°6° (likely 38°3° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 6 mph9 km/h	89%	5%	1
Mon 10a	Sunny	49°9° (likely 45°7° to 53°12°)	49°9°	0%	0 mph0 km/h, gusts 8 mph12 km/h	77%	11%	2
Mon 11a	Sunny	56°13° (likely 52°11° to 57°14°)	56°13°	0%	5 mph8 km/h from W, gusts 10 mph15 km/h	66%	8%	3

Days ahead

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

Today, Oct 24. Sunny. High 62°17°, low 34°1°. Typical 62°17° / 41°5°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
2. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Today: Sunny, with a high near 62. 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°–62°17°
Low, likely
31°−1°–34°1°
Typical high / low
62°17° / 41°5°
Wind
6 mph10 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 65°18°, low 36°2°. Typical 62°17° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 35°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. West wind 0 to 5 mph.
Night: Clear, with a low around 36. West wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–65°18°
Low, likely
34°1°–39°4°
Typical high / low
62°17° / 41°5°
Wind
8 mph12 km/h, gusts 13 mph20 km/h
UV peak
4
Monday, Oct 26. Sunny. High 69°21°, low 43°6°. Typical 62°17° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 47°8°
  Dry
Official NWS forecast
Day: Sunny, with a high near 69. West wind 0 to 5 mph.
Night: Mostly clear, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
36°2°–43°6°
Typical high / low
62°17° / 40°4°
Wind
8 mph13 km/h, gusts 18 mph29 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 63°17°, low 36°2°. Typical 61°16° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°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 63.
Night: Mostly clear, with a low around 36.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–63°17°
Low, likely
36°2°–46°8°
Typical high / low
61°16° / 40°4°
Wind
9 mph15 km/h, gusts 18 mph28 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 61°16°, low 42°6°. Typical 61°16° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 43°6°
  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.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–61°16°
Low, likely
35°2°–42°6°
Typical high / low
61°16° / 40°4°
Wind
7 mph11 km/h, gusts 15 mph23 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 67°19°, low 47°8°. Typical 61°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  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.
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
41°5°–47°8°
Typical high / low
61°16° / 39°4°
Wind
10 mph16 km/h, gusts 28 mph45 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 69°21°, low 45°7°. Typical 60°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–72°22°
Low, likely
43°6°–48°9°
Typical high / low
60°16° / 39°4°
Wind
11 mph18 km/h, gusts 27 mph43 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 67°19°, low 46°8°. Typical 60°16° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°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°–73°23°
Low, likely
41°5°–50°10°
Typical high / low
60°16° / 39°4°
Wind
11 mph18 km/h, gusts 26 mph41 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 64°18°, low 47°8°. Typical 60°16° / 38°3°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  30% chance
4. Overnight
  midnight–6 AM
  Partly cloudy, 50°10°
  30% chance · 0.03 in0.7 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
54°12°–69°21°
Low, likely
36°2°–52°11°
Typical high / low
60°16° / 38°3°
Wind
8 mph13 km/h, gusts 21 mph34 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 63°17°, low 51°11°. Typical 59°15° / 38°3°. Rain 0.13 in3.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  30% chance · 0.01 in0.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  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
49°9°–70°21°
Low, likely
38°3°–58°14°
Typical high / low
59°15° / 38°3°
Wind
9 mph14 km/h, gusts 17 mph28 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 34°.
Tomorrow
Dry, high 65°, low 36°, warming up.
Monday
Dry, high 69°, low 43°, 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

Jordan Creek at Allentown

13 mi

Below flood stage

Level: 1.6 ft
Flow: 35 cfs

Forecast peak 1.6 ft Sat 2 PM

Reading from Sat 11:30 AM · NWS gauge page

Lehigh River at Bethlehem

17 mi

Below flood stage

Level: 1.7 ft
Flow: 1,070 cfs

Forecast peak 1.6 ft Sat 2 PM

Reading from Sat 11:30 AM · NWS gauge page

Schuylkill River at Berne

18 mi

Below flood stage

Level: 5.0 ft
Flow: 245 cfs

Forecast peak 5.0 ft Sat 2 PM

Reading from Sat 11 AM · NWS gauge page

Lehigh River at Walnutport

18 mi

Below flood stage

Level: 2.4 ft
Flow: 651 cfs

Forecast peak 2.4 ft Sat 2 PM

Reading from Sat 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 65% less heating than a typical week.

This week 35Typical 101

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

Comfort

Dry air outside (dew point 33°F).

Open the windows?

Today, 3:00 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 24, today vs a typical year

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

Last 7 days vs normal

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

−8°−5°SunOct 18
−3°−2°MonOct 19
+1°±0°TueOct 20
−3°−2°WedOct 21
±0°ThuOct 22
−4°−2°FriOct 23
—SatOct 24

Mertztown 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: 5:31–6:26 PM; Morning 7:06–8:01 AM
Blue hour: 6:26–6:37 PM; Morning 6:55–7:06 AM; first light 6:55 AM

Stars tonight? Fair

Clear 6:37 PM–6:56 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:34 AM · rises 5:06 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Mertztown. The highest point on the skyline is about 1,600 ft, 27 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Mertztown, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Jordan Creek at Allentown

Lehigh River at Bethlehem

Schuylkill River at Berne

Lehigh River at Walnutport

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