What is the weather in Mertztown right now?

Current weather in Mertztown is clear sky.

Where can I find the hourly weather forecast for Mertztown?

This page shows hourly weather forecast for Mertztown, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Mertztown updated regularly?

Weather data for Mertztown is updated regularly with the latest available observations and forecasts.

Now · 8:19 PM

Mertztown Weather & Hourly Forecast

United States · Pennsylvania · 19539

68°F

Clear night

Feels like: 65°F

💧 Humidity 58% 🌡 Pressure 30.00 inHg 💨 Wind 7 mph 👁 Visibility 23.6 mi ☁ Clouds 2% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Mertztown

Today

9:00 PM

Clear night

66° 💧 None 💨 7 mph H 63%30.03 inHg

Tomorrow

12:00 AM

Clear night

61° 💧 None 💨 5 mph H 76%30.09 inHg

3:00 AM

Clear night

58° 💧 None 💨 4 mph H 85%30.09 inHg

6:00 AM

Clear night

56° 💧 None 💨 5 mph H 84%30.15 inHg

9:00 AM

Sunny

64° 💧 None 💨 4 mph H 71%30.18 inHg

12:00 PM

Sunny

73° 💧 None 💨 4 mph H 45%30.18 inHg

3:00 PM

Sunny

76° 💧 None 💨 3 mph H 41%30.15 inHg

6:00 PM

Partly cloudy

75° 💧 None 💨 3 mph H 50%30.15 inHg

9:00 PM

Mostly clear night

65° 💧 None 💨 3 mph H 69%30.21 inHg

Tuesday

12:00 AM

Partly cloudy night

61° 💧 None 💨 3 mph H 80%30.24 inHg

3:00 AM

Mostly cloudy night

59° 💧 None 💨 2 mph H 81%30.24 inHg

6:00 AM

Mostly cloudy night

56° 💧 None 💨 1 mph H 87%30.27 inHg

9:00 AM

Mostly sunny

68° 💧 None 💨 1 mph H 69%30.30 inHg

12:00 PM

Sunny

76° 💧 None 💨 3 mph H 48%30.27 inHg

3:00 PM

Mostly sunny

79° 💧 None 💨 5 mph H 42%30.24 inHg

6:00 PM

Mostly sunny

77° 💧 None 💨 3 mph H 47%30.21 inHg

Today

9:00 PM

Clear night

66° 💧 None 💨 7 mph H 63%30.03 inHg

10:00 PM

Clear night

64° 💧 None 💨 7 mph H 67%30.06 inHg

11:00 PM

Clear night

63° 💧 None 💨 6 mph H 72%30.06 inHg

Tomorrow

12:00 AM

Clear night

61° 💧 None 💨 5 mph H 76%30.09 inHg

1:00 AM

Mostly clear night

61° 💧 None 💨 5 mph H 78%30.09 inHg

2:00 AM

Clear night

59° 💧 None 💨 5 mph H 82%30.12 inHg

3:00 AM

Clear night

58° 💧 None 💨 4 mph H 85%30.09 inHg

4:00 AM

Clear night

57° 💧 None 💨 4 mph H 86%30.12 inHg

5:00 AM

Clear night

57° 💧 None 💨 5 mph H 85%30.12 inHg

6:00 AM

Clear night

56° 💧 None 💨 5 mph H 84%30.15 inHg

7:00 AM

Sunny

56° 💧 None 💨 5 mph H 85%30.15 inHg

8:00 AM

Sunny

59° 💧 None 💨 5 mph H 80%30.18 inHg

9:00 AM

Sunny

64° 💧 None 💨 4 mph H 71%30.18 inHg

10:00 AM

Sunny

68° 💧 None 💨 5 mph H 58%30.18 inHg

11:00 AM

Sunny

71° 💧 None 💨 5 mph H 50%30.18 inHg

12:00 PM

Sunny

73° 💧 None 💨 4 mph H 45%30.18 inHg

1:00 PM

Sunny

74° 💧 None 💨 3 mph H 43%30.18 inHg

2:00 PM

Sunny

76° 💧 None 💨 3 mph H 42%30.18 inHg

3:00 PM

Sunny

76° 💧 None 💨 3 mph H 41%30.15 inHg

4:00 PM

Sunny

76° 💧 None 💨 2 mph H 41%30.15 inHg

5:00 PM

Sunny

76° 💧 None 💨 2 mph H 42%30.15 inHg

6:00 PM

Partly cloudy

75° 💧 None 💨 3 mph H 50%30.15 inHg

7:00 PM

Sunny

71° 💧 None 💨 3 mph H 63%30.18 inHg

8:00 PM

Clear night

67° 💧 None 💨 4 mph H 64%30.18 inHg

9:00 PM

Mostly clear night

65° 💧 None 💨 3 mph H 69%30.21 inHg

10:00 PM

Partly cloudy night

64° 💧 None 💨 3 mph H 74%30.21 inHg

11:00 PM

Mostly cloudy night

62° 💧 None 💨 3 mph H 78%30.24 inHg

Tuesday

12:00 AM

Partly cloudy night

61° 💧 None 💨 3 mph H 80%30.24 inHg

1:00 AM

Clear night

60° 💧 None 💨 3 mph H 81%30.24 inHg

2:00 AM

Clear night

59° 💧 None 💨 3 mph H 81%30.24 inHg

3:00 AM

Mostly cloudy night

59° 💧 None 💨 2 mph H 81%30.24 inHg

4:00 AM

Mostly cloudy night

58° 💧 None 💨 2 mph H 82%30.24 inHg

5:00 AM

Partly cloudy night

57° 💧 None 💨 2 mph H 85%30.24 inHg

6:00 AM

Mostly cloudy night

56° 💧 None 💨 1 mph H 87%30.27 inHg

7:00 AM

Mostly sunny

57° 💧 None 💨 1 mph H 87%30.27 inHg

8:00 AM

Partly cloudy

61° 💧 None 💨 3 mph H 81%30.30 inHg

9:00 AM

Mostly sunny

68° 💧 None 💨 1 mph H 69%30.30 inHg

10:00 AM

Partly cloudy

72° 💧 None 💨 2 mph H 56%30.30 inHg

11:00 AM

Mostly sunny

74° 💧 None 💨 2 mph H 51%30.30 inHg

12:00 PM

Sunny

76° 💧 None 💨 3 mph H 48%30.27 inHg

1:00 PM

Sunny

77° 💧 None 💨 5 mph H 47%30.27 inHg

2:00 PM

Mostly sunny

78° 💧 None 💨 5 mph H 45%30.24 inHg

3:00 PM

Mostly sunny

79° 💧 None 💨 5 mph H 42%30.24 inHg

4:00 PM

Mostly sunny

79° 💧 None 💨 6 mph H 39%30.24 inHg

5:00 PM

Partly cloudy

79° 💧 None 💨 5 mph H 37%30.21 inHg

6:00 PM

Mostly sunny

77° 💧 None 💨 3 mph H 47%30.21 inHg

7:00 PM

Mostly cloudy

74° 💧 None 💨 2 mph H 55%30.21 inHg

8:00 PM

Partly cloudy night

71° 💧 None 💨 2 mph H 54%30.24 inHg

9:00 PM

Clear night

70° 💧 None 💨 2 mph H 53%30.24 inHg

10:00 PM

Partly cloudy night

69° 💧 None 💨 1 mph H 55%30.24 inHg

11:00 PM

Mostly clear night

66° 💧 None 💨 3 mph H 60%30.24 inHg

Wednesday

12:00 AM

Mostly clear night

65° 💧 None 💨 4 mph H 65%30.24 inHg

1:00 AM

Mostly cloudy night

65° 💧 None 💨 5 mph H 73%30.24 inHg

2:00 AM

Partly cloudy night

65° 💧 None 💨 6 mph H 82%30.24 inHg

3:00 AM

Partly cloudy night

65° 💧 None 💨 6 mph H 85%30.24 inHg

4:00 AM

Partly cloudy night

64° 💧 None 💨 6 mph H 85%30.21 inHg

5:00 AM

Mostly cloudy night

63° 💧 None 💨 5 mph H 86%30.21 inHg

6:00 AM

Mostly cloudy night

63° 💧 None 💨 5 mph H 85%30.21 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 5 mph H 83%30.24 inHg

8:00 AM

Sunny

66° 💧 None 💨 6 mph H 76%30.24 inHg

11:00 AM

Mostly sunny

77° 💧 None 💨 7 mph H 55%30.21 inHg

2:00 PM

Mostly sunny

85° 💧 None 💨 10 mph H 41%30.12 inHg

5:00 PM

Partly cloudy

85° 💧 None 💨 11 mph H 42%30.03 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 10 mph H 59%30.00 inHg

11:00 PM

Mostly clear night

75° 💧 None 💨 11 mph H 72%29.97 inHg

Thursday

2:00 AM

Clear night

74° 💧 None 💨 11 mph H 78%29.94 inHg

5:00 AM

Clear night

72° 💧 None 💨 9 mph H 78%29.91 inHg

8:00 AM

Sunny

73° 💧 None 💨 7 mph H 75%29.91 inHg

11:00 AM

Sunny

83° 💧 None 💨 10 mph H 57%29.88 inHg

2:00 PM

Mostly sunny

87° 💧 None 💨 10 mph H 51%29.80 inHg

5:00 PM

Mostly sunny

79° 💧 None 💨 5 mph H 74%29.77 inHg

8:00 PM

Light rain

73° 💧 None 💨 4 mph H 92%29.80 inHg

11:00 PM

Overcast night

70° 💧 None 💨 6 mph H 97%29.80 inHg

Friday

2:00 AM

Mostly cloudy night

68° 💧 None 💨 3 mph H 96%29.80 inHg

5:00 AM

Clear night

66° 💧 None 💨 6 mph H 96%29.83 inHg

8:00 AM

Sunny

65° 💧 None 💨 8 mph H 89%29.91 inHg

11:00 AM

Mostly sunny

72° 💧 None 💨 6 mph H 64%29.94 inHg

2:00 PM

Sunny

77° 💧 None 💨 6 mph H 46%29.91 inHg

5:00 PM

Sunny

76° 💧 None 💨 6 mph H 48%29.91 inHg

8:00 PM

Clear night

67° 💧 None 💨 4 mph H 66%29.94 inHg

11:00 PM

Clear night

63° 💧 None 💨 5 mph H 72%30.03 inHg

Saturday

2:00 AM

Clear night

60° 💧 None 💨 6 mph H 78%30.03 inHg

5:00 AM

Clear night

57° 💧 None 💨 6 mph H 83%30.06 inHg

8:00 AM

Partly cloudy

59° 💧 None 💨 4 mph H 82%30.09 inHg

2:00 PM

Mostly cloudy

77° 💧 None 💨 6 mph H 49%30.06 inHg

8:00 PM

Mostly cloudy night

71° 💧 None 💨 4 mph H 68%30.03 inHg

Sunday

2:00 AM

Partly cloudy night

64° 💧 None 💨 5 mph H 94%30.09 inHg

8:00 AM

Sunny

67° 💧 None 💨 3 mph H 85%30.09 inHg

2:00 PM

Sunny

83° 💧 None 💨 5 mph H 48%30.06 inHg

8:00 PM

Clear night

76° 💧 None 💨 2 mph H 63%30.03 inHg

Monday

2:00 AM

Mostly cloudy night

68° 💧 None 💨 4 mph H 79%30.06 inHg

8:00 AM

Mostly sunny

68° 💧 None 💨 4 mph H 84%30.15 inHg

2:00 PM

Overcast

84° 💧 None 💨 3 mph H 50%30.09 inHg

8:00 PM

Overcast night

77° 💧 None 💨 7 mph H 57%30.12 inHg

Tuesday

2:00 AM

Mostly clear night

70° 💧 None 💨 6 mph H 88%30.15 inHg

8:00 AM

Partly cloudy

71° 💧 None 💨 7 mph H 92%30.21 inHg

2:00 PM

Mostly sunny

90° 💧 None 💨 12 mph H 42%30.15 inHg

8:00 PM

Clear night

81° 💧 None 💨 11 mph H 58%30.12 inHg

Wednesday

2:00 AM

Clear night

73° 💧 None 💨 8 mph H 84%30.15 inHg

8:00 AM

Mostly sunny

73° 💧 None 💨 4 mph H 88%30.18 inHg

2:00 PM

Mostly cloudy

90° 💧 None 💨 5 mph H 48%30.15 inHg

8:00 PM

Mostly clear night

77° 💧 None 💨 11 mph H 50%30.21 inHg

Thursday

2:00 AM

Clear night

65° 💧 None 💨 9 mph H 67%30.27 inHg

8:00 AM

Sunny

62° 💧 None 💨 9 mph H 66%30.30 inHg

2:00 PM

Mostly sunny

78° 💧 None 💨 4 mph H 37%30.24 inHg

8:00 PM

Mostly cloudy night

72° 💧 None 💨 5 mph H 39%30.15 inHg

Friday

2:00 AM

Mostly clear night

62° 💧 None 💨 1 mph H 86%30.12 inHg

8:00 AM

Overcast

64° 💧 None 💨 2 mph H 79%30.06 inHg

2:00 PM

Mostly cloudy

75° 💧 None 💨 6 mph H 47%29.94 inHg

8:00 PM

Mostly cloudy night

69° 💧 None 💨 7 mph H 43%29.88 inHg

Saturday

2:00 AM

Partly cloudy night

56° 💧 None 💨 12 mph H 76%29.91 inHg

8:00 AM

Light rain

51° 💧 None 💨 13 mph H 82%30.00 inHg

2:00 PM

Light rain

55° 💧 None 💨 16 mph H 67%30.06 inHg

8:00 PM

Mostly clear night

53° 💧 None 💨 12 mph H 74%30.15 inHg

Sunday

2:00 AM

Clear night

52° 💧 None 💨 10 mph H 54%30.18 inHg

8:00 AM

Sunny

50° 💧 None 💨 7 mph H 56%30.27 inHg

2:00 PM

Sunny

65° 💧 None 💨 7 mph H 31%30.27 inHg

8:00 PM

Mostly clear night

58° 💧 None 💨 4 mph H 50%30.27 inHg

Monday

2:00 AM

Clear night

49° 💧 None 💨 4 mph H 74%30.36 inHg

8:00 AM

Sunny

50° 💧 None 💨 5 mph H 76%30.39 inHg

In Mertztown and, more broadly, across the state of Pennsylvania: This evening will feature a mix of sun and clouds, with temperatures remaining mild between 67 and 73 degrees Fahrenheit. Winds will be light, coming from the north at around 5 mph, with gusts reaching up to 7 mph. No precipitation is expected during the next few hours, so it should remain dry. Conditions are calm, making for a pleasant evening. Temperatures are expected to stay steady through the night, providing comfortable conditions for outdoor activities or relaxation. Overall, it looks like a mild and quiet evening with no significant weather changes expected.

15-Day Weather Outlook for Mertztown

Tuesday, Sep 8Tue Sep 8

Mostly sunny 79°/56° 💧 None 💨 6 mph

Wednesday, Sep 9Wed Sep 9

Partly cloudy 85°/62° 💧 0.004 in 💨 11 mph

Thursday, Sep 10Thu Sep 10

Mostly sunny 87°/72° 💧 0.040 in 💨 11 mph

Friday, Sep 11Fri Sep 11

Light rain 77°/65° 💧 0.087 in 💨 8 mph

Saturday, Sep 12Sat Sep 12

Partly cloudy 77°/57° 💧 None 💨 6 mph

Sunday, Sep 13Sun Sep 13

Mostly cloudy 83°/64° 💧 0.004 in 💨 5 mph

Monday, Sep 14Mon Sep 14

Overcast 84°/68° 💧 0.006 in 💨 4 mph

Tuesday, Sep 15Tue Sep 15

Overcast 90°/70° 💧 0.005 in 💨 12 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 90°/73° 💧 0.001 in 💨 11 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 78°/62° 💧 0.003 in 💨 11 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 75°/62° 💧 0.013 in 💨 6 mph

Saturday, Sep 19Sat Sep 19

Light rain 69°/51° 💧 0.096 in 💨 16 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 65°/50° 💧 0.027 in 💨 12 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 58°/49° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mertztown

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mertztown

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 9:00 PM

PM2.5 Fine particles Good 2,4µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 3,9µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 52,0µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 6,8µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Mertztown

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,9High 😊Good

Tomorrow UV 6,7High 😐Moderate

Tuesday UV 6,4High 😐Moderate

Wednesday UV 6,7High 🙂Fair

Thursday UV 2,8Low 🙂Fair

Friday UV 6,0High —Unavailable

Saturday UV 6,0High —Unavailable

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Mertztown

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · MERTZTOWN, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

99/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 9:01 PM–5:01 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 22% Waning Crescent · Moon about 7° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 65° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min74%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Martinsville US · New Jersey · 11,559 residents Great Bookham and Fetcham GB · England · 21,655 residents Tweed Heads AU · New South Wales · 9,176 residents Watford City US · North Dakota · 6,039 residents Fairbanks US · Alaska · 32,083 residents Goose Creek US · South Carolina · 48,078 residents Lake of the Pines US · California · 5,461 residents Seaford US · Delaware · 8,485 residents Las Vegas US · Nevada · 660,400 residents East Ardsley GB · England · 15,245 residents Brunsville US · Iowa · 210 residents Haubstadt US · Indiana · 1,905 residents West Ishpeming US · Michigan · 2,851 residents Burcher AU · New South Wales · 82 residents Denver US · Colorado · 718,877 residents Honeygo US · Maryland · 12,250 residents

Forecast data for Mertztown were last refreshed today at 8:19 PM. The current forecast period extends through 08/09/2026 at 6:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.