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Current weather in Pennwyn is clear sky.

Where can I find the hourly weather forecast for Pennwyn?

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

Is the weather forecast for Pennwyn updated regularly?

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

Now · 11:09 AM

Pennwyn Weather & Hourly Forecast

United States · Pennsylvania · 19607

76°F

Sunny

Feels like: 76°F

💧 Humidity 44% 🌡 Pressure 30.27 inHg 💨 Wind 3 mph 👁 Visibility 27.2 mi ☁ Clouds 0% ☀️ UV index 4.5 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Pennwyn

Today

12:00 PM

Sunny

79° 💧 None 💨 4 mph H 43%30.24 inHg

3:00 PM

Mostly sunny

82° 💧 None 💨 5 mph H 40%30.21 inHg

6:00 PM

Partly cloudy

80° 💧 None 💨 3 mph H 42%30.21 inHg

9:00 PM

Mostly cloudy night

70° 💧 None 💨 4 mph H 65%30.21 inHg

Tomorrow

12:00 AM

Overcast night

68° 💧 None 💨 5 mph H 63%30.21 inHg

3:00 AM

Overcast night

66° 💧 None 💨 4 mph H 85%30.21 inHg

6:00 AM

Mostly cloudy night

65° 💧 None 💨 4 mph H 88%30.21 inHg

9:00 AM

Partly cloudy

73° 💧 None 💨 5 mph H 63%30.21 inHg

12:00 PM

Sunny

84° 💧 None 💨 8 mph H 43%30.18 inHg

3:00 PM

Partly cloudy

90° 💧 None 💨 11 mph H 36%30.06 inHg

6:00 PM

Mostly sunny

84° 💧 None 💨 12 mph H 45%30.03 inHg

9:00 PM

Clear night

78° 💧 None 💨 12 mph H 56%30.00 inHg

Thursday

12:00 AM

Clear night

76° 💧 None 💨 12 mph H 61%30.00 inHg

3:00 AM

Partly cloudy night

74° 💧 None 💨 10 mph H 61%29.94 inHg

6:00 AM

Mostly clear night

72° 💧 None 💨 6 mph H 63%29.94 inHg

9:00 AM

Light rain

76° 💧 0.055 in 💨 8 mph H 61%29.94 inHg

Today

12:00 PM

Sunny

79° 💧 None 💨 4 mph H 43%30.24 inHg

1:00 PM

Mostly sunny

80° 💧 None 💨 5 mph H 42%30.24 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 5 mph H 41%30.21 inHg

3:00 PM

Mostly sunny

82° 💧 None 💨 5 mph H 40%30.21 inHg

4:00 PM

Mostly cloudy

82° 💧 None 💨 4 mph H 39%30.18 inHg

5:00 PM

Mostly cloudy

82° 💧 None 💨 4 mph H 38%30.18 inHg

6:00 PM

Partly cloudy

80° 💧 None 💨 3 mph H 42%30.21 inHg

7:00 PM

Mostly cloudy

76° 💧 None 💨 2 mph H 55%30.21 inHg

8:00 PM

Mostly cloudy night

72° 💧 None 💨 1 mph H 61%30.21 inHg

9:00 PM

Mostly cloudy night

70° 💧 None 💨 4 mph H 65%30.21 inHg

10:00 PM

Overcast night

69° 💧 None 💨 4 mph H 64%30.24 inHg

11:00 PM

Overcast night

68° 💧 None 💨 4 mph H 63%30.24 inHg

Tomorrow

12:00 AM

Overcast night

68° 💧 None 💨 5 mph H 63%30.21 inHg

1:00 AM

Mostly cloudy night

68° 💧 None 💨 4 mph H 69%30.21 inHg

2:00 AM

Partly cloudy night

67° 💧 None 💨 4 mph H 77%30.21 inHg

3:00 AM

Overcast night

66° 💧 None 💨 4 mph H 85%30.21 inHg

4:00 AM

Mostly cloudy night

65° 💧 None 💨 4 mph H 90%30.21 inHg

5:00 AM

Mostly cloudy night

65° 💧 None 💨 4 mph H 90%30.21 inHg

6:00 AM

Mostly cloudy night

65° 💧 None 💨 4 mph H 88%30.21 inHg

7:00 AM

Mostly sunny

65° 💧 None 💨 4 mph H 85%30.21 inHg

8:00 AM

Mostly cloudy

69° 💧 None 💨 5 mph H 74%30.21 inHg

9:00 AM

Partly cloudy

73° 💧 None 💨 5 mph H 63%30.21 inHg

10:00 AM

Sunny

77° 💧 None 💨 6 mph H 54%30.21 inHg

11:00 AM

Mostly sunny

81° 💧 None 💨 7 mph H 48%30.18 inHg

12:00 PM

Sunny

84° 💧 None 💨 8 mph H 43%30.18 inHg

1:00 PM

Mostly sunny

86° 💧 None 💨 9 mph H 41%30.15 inHg

2:00 PM

Partly cloudy

88° 💧 None 💨 9 mph H 39%30.12 inHg

3:00 PM

Partly cloudy

90° 💧 None 💨 11 mph H 36%30.06 inHg

4:00 PM

Partly cloudy

89° 💧 None 💨 11 mph H 36%30.03 inHg

5:00 PM

Partly cloudy

88° 💧 None 💨 12 mph H 40%30.03 inHg

6:00 PM

Mostly sunny

84° 💧 None 💨 12 mph H 45%30.03 inHg

7:00 PM

Sunny

82° 💧 None 💨 12 mph H 47%30.00 inHg

8:00 PM

Clear night

80° 💧 None 💨 11 mph H 51%30.00 inHg

9:00 PM

Clear night

78° 💧 None 💨 12 mph H 56%30.00 inHg

10:00 PM

Clear night

77° 💧 None 💨 12 mph H 63%30.00 inHg

11:00 PM

Clear night

76° 💧 None 💨 12 mph H 64%30.00 inHg

Thursday

12:00 AM

Clear night

76° 💧 None 💨 12 mph H 61%30.00 inHg

1:00 AM

Clear night

75° 💧 None 💨 12 mph H 60%29.97 inHg

2:00 AM

Mostly clear night

74° 💧 None 💨 11 mph H 61%29.97 inHg

3:00 AM

Partly cloudy night

74° 💧 None 💨 10 mph H 61%29.94 inHg

4:00 AM

Mostly clear night

73° 💧 None 💨 10 mph H 61%29.94 inHg

5:00 AM

Mostly clear night

73° 💧 None 💨 8 mph H 61%29.94 inHg

6:00 AM

Mostly clear night

72° 💧 None 💨 6 mph H 63%29.94 inHg

7:00 AM

Mostly sunny

72° 💧 None 💨 7 mph H 63%29.94 inHg

8:00 AM

Partly cloudy

75° 💧 None 💨 6 mph H 59%29.94 inHg

9:00 AM

Light rain

76° 💧 0.011 in 💨 8 mph H 61%29.94 inHg

10:00 AM

Light rain

76° 💧 0.024 in 💨 7 mph H 69%29.94 inHg

11:00 AM

Light rain

77° 💧 0.020 in 💨 8 mph H 75%29.94 inHg

12:00 PM

Mostly cloudy

80° 💧 0.002 in 💨 9 mph H 69%29.91 inHg

1:00 PM

Overcast

80° 💧 0.003 in 💨 8 mph H 68%29.88 inHg

2:00 PM

Light rain

76° 💧 0.074 in 💨 8 mph H 90%29.88 inHg

3:00 PM

Light thunderstorms

75° 💧 0.060 in 💨 8 mph H 93%29.85 inHg

4:00 PM

Light rain

75° 💧 0.062 in 💨 6 mph H 92%29.83 inHg

5:00 PM

Light rain

77° 💧 0.014 in 💨 5 mph H 86%29.80 inHg

6:00 PM

Thunderstorms

74° 💧 0.237 in 💨 7 mph H 96%29.80 inHg

7:00 PM

Thunderstorms

73° 💧 0.109 in 💨 8 mph H 96%29.80 inHg

8:00 PM

Light rain

72° 💧 0.065 in 💨 6 mph H 98%29.83 inHg

Friday

5:00 AM

Mostly clear night

64° 💧 None 💨 5 mph H 98%29.94 inHg

8:00 AM

Sunny

64° 💧 None 💨 5 mph H 96%30.03 inHg

11:00 AM

Sunny

70° 💧 None 💨 6 mph H 61%30.03 inHg

2:00 PM

Sunny

75° 💧 None 💨 5 mph H 44%30.00 inHg

5:00 PM

Sunny

76° 💧 None 💨 4 mph H 42%29.97 inHg

8:00 PM

Clear night

67° 💧 None 💨 3 mph H 68%30.00 inHg

11:00 PM

Mostly cloudy night

63° 💧 None 💨 1 mph H 72%30.06 inHg

Saturday

2:00 AM

Mostly clear night

60° 💧 None 💨 3 mph H 80%30.06 inHg

5:00 AM

Overcast night

57° 💧 None 💨 4 mph H 82%30.09 inHg

8:00 AM

Overcast

61° 💧 None 💨 5 mph H 78%30.12 inHg

11:00 AM

Overcast

72° 💧 None 💨 4 mph H 58%30.12 inHg

2:00 PM

Mostly sunny

79° 💧 None 💨 7 mph H 48%30.09 inHg

5:00 PM

Overcast

80° 💧 None 💨 9 mph H 52%30.03 inHg

8:00 PM

Mostly clear night

72° 💧 None 💨 9 mph H 64%30.06 inHg

11:00 PM

Mostly clear night

68° 💧 None 💨 8 mph H 74%30.09 inHg

Sunday

2:00 AM

Overcast night

68° 💧 None 💨 5 mph H 80%30.06 inHg

5:00 AM

Overcast night

66° 💧 None 💨 6 mph H 94%30.03 inHg

8:00 AM

Light rain

68° 💧 None 💨 2 mph H 98%30.06 inHg

11:00 AM

Overcast

73° 💧 None 💨 4 mph H 93%30.06 inHg

2:00 PM

Severe thunderstorms

77° 💧 None 💨 4 mph H 85%30.00 inHg

5:00 PM

Partly cloudy

76° 💧 None 💨 4 mph H 88%29.97 inHg

8:00 PM

Clear night

72° 💧 None 💨 5 mph H 98%30.00 inHg

11:00 PM

Clear night

70° 💧 None 💨 5 mph H 98%30.03 inHg

Monday

2:00 AM

Partly cloudy night

68° 💧 None 💨 3 mph H 99%30.06 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 2 mph H 97%30.00 inHg

2:00 PM

Partly cloudy

70° 💧 None 💨 5 mph H 89%30.09 inHg

8:00 PM

Partly cloudy night

80° 💧 None 💨 7 mph H 45%30.09 inHg

Tuesday

2:00 AM

Partly cloudy night

70° 💧 None 💨 5 mph H 68%30.12 inHg

8:00 AM

Mostly sunny

62° 💧 None 💨 3 mph H 82%30.18 inHg

2:00 PM

Mostly sunny

64° 💧 None 💨 5 mph H 79%30.24 inHg

8:00 PM

Mostly cloudy night

83° 💧 None 💨 8 mph H 44%30.21 inHg

Wednesday

2:00 AM

Mostly clear night

75° 💧 None 💨 8 mph H 65%30.21 inHg

8:00 AM

Mostly cloudy

69° 💧 None 💨 8 mph H 90%30.18 inHg

2:00 PM

Overcast

72° 💧 None 💨 4 mph H 92%30.21 inHg

8:00 PM

Mostly cloudy night

85° 💧 None 💨 6 mph H 62%30.18 inHg

Thursday

2:00 AM

Mostly clear night

78° 💧 None 💨 3 mph H 78%30.18 inHg

8:00 AM

Mostly cloudy

68° 💧 None 💨 6 mph H 77%30.21 inHg

2:00 PM

Overcast

66° 💧 None 💨 5 mph H 79%30.24 inHg

8:00 PM

Partly cloudy night

77° 💧 None 💨 1 mph H 45%30.12 inHg

Friday

2:00 AM

Overcast night

70° 💧 None 💨 5 mph H 72%30.00 inHg

8:00 AM

Light rain

63° 💧 None 💨 10 mph H 96%29.97 inHg

2:00 PM

Sunny

59° 💧 None 💨 12 mph H 76%30.06 inHg

8:00 PM

Clear night

62° 💧 None 💨 14 mph H 34%30.12 inHg

Saturday

2:00 AM

Clear night

55° 💧 None 💨 11 mph H 45%30.21 inHg

8:00 AM

Sunny

47° 💧 None 💨 4 mph H 65%30.27 inHg

2:00 PM

Sunny

48° 💧 None 💨 5 mph H 70%30.33 inHg

8:00 PM

Clear night

63° 💧 None 💨 4 mph H 45%30.24 inHg

Sunday

2:00 AM

Clear night

56° 💧 None 💨 5 mph H 68%30.18 inHg

8:00 AM

Sunny

51° 💧 None 💨 4 mph H 83%30.21 inHg

2:00 PM

Sunny

51° 💧 None 💨 3 mph H 86%30.24 inHg

8:00 PM

Clear night

71° 💧 None 💨 5 mph H 41%30.21 inHg

Monday

2:00 AM

Mostly clear night

61° 💧 None 💨 3 mph H 68%30.18 inHg

8:00 AM

Mostly cloudy

54° 💧 None 💨 5 mph H 90%30.21 inHg

2:00 PM

Partly cloudy

56° 💧 None 💨 5 mph H 81%30.21 inHg

8:00 PM

Mostly clear night

76° 💧 None 💨 8 mph H 43%30.12 inHg

Tuesday

2:00 AM

Mostly clear night

66° 💧 None 💨 9 mph H 70%30.06 inHg

8:00 AM

Partly cloudy

63° 💧 None 💨 9 mph H 82%30.03 inHg

2:00 PM

Overcast

63° 💧 None 💨 5 mph H 74%30.03 inHg

8:00 PM

Mostly cloudy night

75° 💧 None 💨 9 mph H 56%29.97 inHg

Wednesday

2:00 AM

Clear night

70° 💧 None 💨 8 mph H 68%29.91 inHg

In Pennwyn and, more broadly, across the state of Pennsylvania: The rest of the day will see mostly cloudy skies with temperatures ranging from the mid-60s to the mid-70s. Winds will be light, coming from the east at up to 3 mph, with occasional gusts reaching 4 mph. No precipitation is expected, so outdoor plans should be comfortable and dry. Conditions remain mild to warm, making for a pleasant afternoon.

15-Day Weather Outlook for Pennwyn

TomorrowTomorrow

Mostly cloudy 90°/65° 💧 None 💨 12 mph

Thursday, Sep 10Thu Sep 10

Light thunderstorms 80°/72° 💧 None 💨 12 mph

Friday, Sep 11Fri Sep 11

Light rain 76°/64° 💧 0.727 in 💨 6 mph

Saturday, Sep 12Sat Sep 12

Mostly cloudy 80°/57° 💧 None 💨 9 mph

Sunday, Sep 13Sun Sep 13

Severe thunderstorms 77°/66° 💧 0.481 in 💨 9 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 72°/68° 💧 0.001 in 💨 5 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 80°/62° 💧 None 💨 7 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 83°/69° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 85°/66° 💧 0.044 in 💨 6 mph

Friday, Sep 18Fri Sep 18

Light rain 77°/59° 💧 0.542 in 💨 12 mph

Saturday, Sep 19Sat Sep 19

Sunny 62°/47° 💧 None 💨 14 mph

Sunday, Sep 20Sun Sep 20

Sunny 63°/51° 💧 None 💨 5 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 71°/54° 💧 None 💨 5 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 76°/63° 💧 None 💨 9 mph

Wednesday, Sep 23Wed Sep 23

Mostly cloudy 75°/70° 💧 0.026 in 💨 9 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Pennwyn

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Pennwyn

Hourly forecast · Updated every 2 hours

Moderate

Nearest forecast value 12:00 PM

PM2.5 Fine particles Fair 13,2µg/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 15,2µg/m³

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

O₃ Ozone Moderate 116,3µg/m³

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

NO₂ Nitrogen dioxide Good 5,8µg/m³

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

Sensitive people should reduce strenuous and prolonged outdoor exertion.

UV & HEALTH

UV, Sun & Health Outlook in Pennwyn

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 6,8High 😐Moderate

Tomorrow UV 6,8High 😐Moderate

Thursday UV 3,3Moderate 😐Moderate

Friday UV 6,6High 😐Moderate

Saturday UV 5,0Moderate 😊Good

Sunday UV 5,0Moderate —Unavailable

Monday UV 6,0High —Unavailable

Hourly UV index today

12:00 PMUV 6,1 1:00 PMUV 6,8 2:00 PMUV 6,1 3:00 PMUV 4,8 4:00 PMUV 3,0 5:00 PMUV 1,6 6:00 PMUV 0,5 7:00 PMUV 0,0

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.

Caution for sensitive people

People with respiratory or cardiovascular conditions should reduce prolonged outdoor exertion.

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 Pennwyn

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · PENNWYN, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Fair observing conditions. Best local viewing window: 2:00 AM–3:00 AM.

58/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 8:58 PM–5:05 AM

☁ Cloud cover 58% Real hourly forecast for the best viewing hour.

☾ Moonlight 7% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 55° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min55%

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.

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Forecast data for Pennwyn were last refreshed today at 11:09 AM. The current forecast period extends through 10/09/2026 at 9:00 AM. 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.