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Current weather in Blue Knob is clear sky.

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

Now · 5:08 PM

Blue Knob Weather & Hourly Forecast

United States · Pennsylvania · 15946

76°F

Sunny

Feels like: 76°F

💧 Humidity 65% 🌡 Pressure 29.88 inHg 💨 Wind 9 mph 👁 Visibility 24.3 mi ☁ Clouds 12% ☀️ UV index 2.6 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Blue Knob

Today

6:00 PM

Mostly sunny

75° 💧 0.014 in 💨 8 mph H 71%29.88 inHg

9:00 PM

Mostly cloudy night

65° 💧 0.013 in 💨 10 mph H 95%30.00 inHg

Tomorrow

12:00 AM

Mist at night

63° 💧 0.003 in 💨 6 mph H 100%30.00 inHg

3:00 AM

Mostly clear night

62° 💧 None 💨 9 mph H 95%30.03 inHg

6:00 AM

Mostly clear night

57° 💧 0.000 in 💨 10 mph H 97%30.09 inHg

9:00 AM

Mostly sunny

56° 💧 0.000 in 💨 9 mph H 85%30.18 inHg

12:00 PM

Sunny

62° 💧 None 💨 8 mph H 56%30.21 inHg

3:00 PM

Sunny

65° 💧 None 💨 8 mph H 50%30.18 inHg

6:00 PM

Sunny

63° 💧 None 💨 7 mph H 57%30.21 inHg

9:00 PM

Clear night

55° 💧 None 💨 2 mph H 79%30.24 inHg

Tuesday

12:00 AM

Clear night

54° 💧 None 💨 2 mph H 76%30.27 inHg

3:00 AM

Clear night

52° 💧 None 💨 4 mph H 78%30.27 inHg

6:00 AM

Clear night

50° 💧 None 💨 7 mph H 86%30.30 inHg

9:00 AM

Mostly sunny

56° 💧 None 💨 9 mph H 72%30.33 inHg

12:00 PM

Partly cloudy

65° 💧 None 💨 10 mph H 60%30.33 inHg

3:00 PM

Mostly sunny

70° 💧 None 💨 8 mph H 58%30.27 inHg

Today

6:00 PM

Mostly sunny

75° 💧 None 💨 8 mph H 71%29.88 inHg

7:00 PM

Overcast

72° 💧 0.002 in 💨 9 mph H 78%29.91 inHg

8:00 PM

Light rain

68° 💧 0.012 in 💨 11 mph H 87%29.97 inHg

9:00 PM

Mostly cloudy night

65° 💧 0.002 in 💨 10 mph H 95%30.00 inHg

10:00 PM

Light rain

64° 💧 0.011 in 💨 7 mph H 97%30.00 inHg

11:00 PM

Partly cloudy night

64° 💧 0.000 in 💨 4 mph H 99%30.00 inHg

Tomorrow

12:00 AM

Mist at night

63° 💧 None 💨 6 mph H 100%30.00 inHg

1:00 AM

Fog at night

64° 💧 0.001 in 💨 10 mph H 99%30.00 inHg

2:00 AM

Mostly cloudy night

64° 💧 0.002 in 💨 10 mph H 96%30.03 inHg

3:00 AM

Mostly clear night

62° 💧 None 💨 9 mph H 95%30.03 inHg

4:00 AM

Mostly clear night

60° 💧 None 💨 10 mph H 97%30.06 inHg

5:00 AM

Partly cloudy night

58° 💧 None 💨 11 mph H 97%30.06 inHg

6:00 AM

Mostly clear night

57° 💧 0.000 in 💨 10 mph H 97%30.09 inHg

7:00 AM

Mostly sunny

55° 💧 None 💨 10 mph H 97%30.12 inHg

8:00 AM

Partly cloudy

55° 💧 None 💨 9 mph H 93%30.15 inHg

9:00 AM

Mostly sunny

56° 💧 0.000 in 💨 9 mph H 85%30.18 inHg

10:00 AM

Mostly sunny

58° 💧 None 💨 8 mph H 75%30.18 inHg

11:00 AM

Sunny

60° 💧 None 💨 8 mph H 62%30.21 inHg

12:00 PM

Sunny

62° 💧 None 💨 8 mph H 56%30.21 inHg

1:00 PM

Sunny

64° 💧 None 💨 8 mph H 52%30.21 inHg

2:00 PM

Partly cloudy

64° 💧 None 💨 9 mph H 52%30.21 inHg

3:00 PM

Sunny

65° 💧 None 💨 8 mph H 50%30.18 inHg

4:00 PM

Sunny

65° 💧 None 💨 7 mph H 51%30.18 inHg

5:00 PM

Sunny

64° 💧 None 💨 7 mph H 53%30.18 inHg

6:00 PM

Sunny

63° 💧 None 💨 7 mph H 57%30.21 inHg

7:00 PM

Sunny

59° 💧 None 💨 4 mph H 70%30.21 inHg

8:00 PM

Clear night

56° 💧 None 💨 3 mph H 77%30.21 inHg

9:00 PM

Clear night

55° 💧 None 💨 2 mph H 79%30.24 inHg

10:00 PM

Clear night

55° 💧 None 💨 1 mph H 78%30.24 inHg

11:00 PM

Clear night

55° 💧 None 💨 2 mph H 76%30.24 inHg

Tuesday

12:00 AM

Clear night

54° 💧 None 💨 2 mph H 76%30.27 inHg

1:00 AM

Clear night

53° 💧 None 💨 3 mph H 75%30.27 inHg

2:00 AM

Clear night

53° 💧 None 💨 4 mph H 76%30.27 inHg

3:00 AM

Clear night

52° 💧 None 💨 4 mph H 78%30.27 inHg

4:00 AM

Clear night

51° 💧 None 💨 4 mph H 81%30.27 inHg

5:00 AM

Clear night

50° 💧 None 💨 5 mph H 84%30.30 inHg

6:00 AM

Clear night

50° 💧 None 💨 7 mph H 86%30.30 inHg

7:00 AM

Mostly sunny

50° 💧 None 💨 7 mph H 84%30.30 inHg

8:00 AM

Mostly sunny

53° 💧 None 💨 9 mph H 77%30.30 inHg

9:00 AM

Mostly sunny

56° 💧 None 💨 9 mph H 72%30.33 inHg

10:00 AM

Partly cloudy

59° 💧 None 💨 10 mph H 66%30.33 inHg

11:00 AM

Mostly sunny

62° 💧 None 💨 10 mph H 63%30.33 inHg

12:00 PM

Partly cloudy

65° 💧 None 💨 10 mph H 60%30.33 inHg

1:00 PM

Mostly sunny

67° 💧 None 💨 9 mph H 58%30.33 inHg

2:00 PM

Partly cloudy

69° 💧 None 💨 8 mph H 58%30.30 inHg

3:00 PM

Mostly sunny

70° 💧 None 💨 8 mph H 58%30.27 inHg

4:00 PM

Sunny

71° 💧 None 💨 8 mph H 59%30.27 inHg

5:00 PM

Mostly sunny

70° 💧 None 💨 8 mph H 61%30.27 inHg

6:00 PM

Mostly sunny

69° 💧 None 💨 8 mph H 66%30.27 inHg

7:00 PM

Sunny

65° 💧 None 💨 7 mph H 74%30.27 inHg

8:00 PM

Clear night

63° 💧 None 💨 7 mph H 77%30.27 inHg

9:00 PM

Clear night

62° 💧 None 💨 8 mph H 76%30.30 inHg

10:00 PM

Clear night

62° 💧 None 💨 8 mph H 75%30.30 inHg

11:00 PM

Clear night

61° 💧 None 💨 8 mph H 75%30.30 inHg

Wednesday

12:00 AM

Clear night

61° 💧 None 💨 8 mph H 75%30.30 inHg

1:00 AM

Clear night

60° 💧 None 💨 7 mph H 77%30.30 inHg

2:00 AM

Clear night

59° 💧 None 💨 6 mph H 81%30.30 inHg

3:00 AM

Mostly clear night

58° 💧 None 💨 5 mph H 84%30.27 inHg

4:00 AM

Partly cloudy night

58° 💧 None 💨 5 mph H 85%30.27 inHg

5:00 AM

Clear night

58° 💧 None 💨 5 mph H 87%30.27 inHg

6:00 AM

Clear night

58° 💧 None 💨 5 mph H 88%30.30 inHg

7:00 AM

Sunny

58° 💧 None 💨 4 mph H 88%30.30 inHg

8:00 AM

Sunny

61° 💧 None 💨 4 mph H 83%30.33 inHg

11:00 AM

Partly cloudy

73° 💧 None 💨 3 mph H 66%30.36 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 5 mph H 58%30.30 inHg

5:00 PM

Light rain

80° 💧 None 💨 3 mph H 63%30.27 inHg

8:00 PM

Mostly clear night

72° 💧 None 💨 4 mph H 85%30.27 inHg

11:00 PM

Mostly clear night

69° 💧 None 💨 3 mph H 84%30.30 inHg

Thursday

2:00 AM

Clear night

66° 💧 None 💨 4 mph H 86%30.30 inHg

5:00 AM

Clear night

63° 💧 None 💨 4 mph H 91%30.27 inHg

8:00 AM

Sunny

64° 💧 None 💨 6 mph H 89%30.30 inHg

11:00 AM

Sunny

78° 💧 None 💨 5 mph H 67%30.24 inHg

2:00 PM

Mostly sunny

85° 💧 None 💨 9 mph H 58%30.18 inHg

5:00 PM

Mostly sunny

84° 💧 None 💨 7 mph H 58%30.09 inHg

8:00 PM

Partly cloudy night

71° 💧 None 💨 3 mph H 98%30.15 inHg

11:00 PM

Mostly cloudy night

69° 💧 None 💨 3 mph H 98%30.15 inHg

Friday

2:00 AM

Overcast night

68° 💧 None 💨 1 mph H 98%30.12 inHg

5:00 AM

Overcast night

69° 💧 None 💨 1 mph H 99%30.12 inHg

8:00 AM

Overcast

69° 💧 None 💨 3 mph H 98%30.15 inHg

11:00 AM

Overcast

73° 💧 None 💨 6 mph H 79%30.15 inHg

2:00 PM

Partly cloudy

77° 💧 None 💨 7 mph H 64%30.12 inHg

5:00 PM

Mostly sunny

77° 💧 None 💨 7 mph H 60%30.09 inHg

8:00 PM

Mostly clear night

68° 💧 None 💨 3 mph H 83%30.12 inHg

11:00 PM

Clear night

64° 💧 None 💨 5 mph H 82%30.12 inHg

Saturday

2:00 AM

Mostly clear night

60° 💧 None 💨 5 mph H 83%30.12 inHg

5:00 AM

Mostly clear night

58° 💧 None 💨 4 mph H 89%30.12 inHg

8:00 AM

Mostly cloudy

59° 💧 None 💨 4 mph H 86%30.15 inHg

2:00 PM

Mostly sunny

74° 💧 None 💨 5 mph H 53%30.09 inHg

8:00 PM

Overcast night

68° 💧 None 💨 6 mph H 67%30.06 inHg

Sunday

2:00 AM

Moderate rain

61° 💧 None 💨 3 mph H 96%30.09 inHg

8:00 AM

Moderate rain

61° 💧 None 💨 3 mph H 99%30.06 inHg

2:00 PM

Light rain

70° 💧 None 💨 11 mph H 97%30.03 inHg

8:00 PM

Moderate rain

67° 💧 None 💨 2 mph H 100%30.03 inHg

Monday

2:00 AM

Overcast night

64° 💧 None 💨 4 mph H 100%30.09 inHg

8:00 AM

Light rain

63° 💧 None 💨 4 mph H 99%30.15 inHg

2:00 PM

Overcast

76° 💧 None 💨 5 mph H 78%30.12 inHg

8:00 PM

Mostly cloudy night

70° 💧 None 💨 4 mph H 100%30.09 inHg

Tuesday

2:00 AM

Mostly clear night

67° 💧 None 💨 3 mph H 99%30.09 inHg

8:00 AM

Mostly sunny

68° 💧 None 💨 7 mph H 98%30.09 inHg

2:00 PM

Mostly cloudy

81° 💧 None 💨 9 mph H 62%30.06 inHg

8:00 PM

Mostly cloudy night

68° 💧 None 💨 4 mph H 96%30.06 inHg

Wednesday

2:00 AM

Overcast night

65° 💧 None 💨 8 mph H 93%30.12 inHg

8:00 AM

Overcast

59° 💧 None 💨 8 mph H 90%30.21 inHg

2:00 PM

Sunny

67° 💧 None 💨 6 mph H 56%30.21 inHg

8:00 PM

Clear night

59° 💧 None 💨 5 mph H 81%30.24 inHg

Thursday

2:00 AM

Clear night

48° 💧 None 💨 7 mph H 84%30.36 inHg

8:00 AM

Sunny

46° 💧 None 💨 5 mph H 88%30.45 inHg

2:00 PM

Sunny

62° 💧 None 💨 6 mph H 59%30.39 inHg

8:00 PM

Clear night

53° 💧 None 💨 3 mph H 84%30.39 inHg

Friday

2:00 AM

Clear night

47° 💧 None 💨 2 mph H 80%30.45 inHg

8:00 AM

Sunny

48° 💧 None 💨 2 mph H 87%30.47 inHg

2:00 PM

Sunny

63° 💧 None 💨 6 mph H 54%30.39 inHg

8:00 PM

Clear night

54° 💧 None 💨 3 mph H 74%30.36 inHg

Saturday

2:00 AM

Clear night

48° 💧 None 💨 3 mph H 81%30.36 inHg

8:00 AM

Sunny

49° 💧 None 💨 2 mph H 83%30.33 inHg

2:00 PM

Sunny

69° 💧 None 💨 2 mph H 57%30.24 inHg

8:00 PM

Clear night

60° 💧 None 💨 0 mph H 86%30.18 inHg

Sunday

2:00 AM

Mostly clear night

53° 💧 None 💨 2 mph H 85%30.18 inHg

8:00 AM

Overcast

53° 💧 None 💨 2 mph H 88%30.12 inHg

2:00 PM

Mostly cloudy

71° 💧 None 💨 9 mph H 54%30.00 inHg

8:00 PM

Overcast night

64° 💧 None 💨 5 mph H 62%29.94 inHg

Monday

2:00 AM

Overcast night

60° 💧 None 💨 6 mph H 71%29.91 inHg

8:00 AM

Light rain

59° 💧 None 💨 8 mph H 89%29.91 inHg

In Blue Knob and, more broadly, across the state of Pennsylvania: The late afternoon will see a mix of sun and clouds with mild to warm temperatures ranging from 70 to 79 degrees Fahrenheit. Winds will be light, coming from the northwest at up to 7 mph, with occasional gusts reaching 12 mph. No precipitation is expected as evening approaches, and the weather will remain generally stable. Humidity levels will stay comfortable, making for a pleasant evening. Temperatures are likely to slowly taper off as night falls, with clear or partly cloudy skies continuing. Overall, the weather remains mild and quiet into the night.

15-Day Weather Outlook for Blue Knob

TomorrowTomorrow

Mostly cloudy 65°/55° 💧 None 💨 11 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 71°/50° 💧 None 💨 10 mph

Wednesday, Sep 16Wed Sep 16

Light rain 81°/58° 💧 0.050 in 💨 8 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 85°/63° 💧 0.127 in 💨 9 mph

Friday, Sep 18Fri Sep 18

Overcast 77°/64° 💧 0.040 in 💨 7 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 74°/58° 💧 None 💨 6 mph

Sunday, Sep 20Sun Sep 20

Moderate rain 70°/61° 💧 1.794 in 💨 11 mph

Monday, Sep 21Mon Sep 21

Light rain 76°/63° 💧 0.356 in 💨 5 mph

Tuesday, Sep 22Tue Sep 22

Mostly cloudy 81°/67° 💧 0.055 in 💨 9 mph

Wednesday, Sep 23Wed Sep 23

Overcast 67°/59° 💧 0.005 in 💨 8 mph

Thursday, Sep 24Thu Sep 24

Sunny 62°/46° 💧 None 💨 7 mph

Friday, Sep 25Fri Sep 25

Sunny 63°/47° 💧 None 💨 6 mph

Saturday, Sep 26Sat Sep 26

Sunny 69°/48° 💧 None 💨 3 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 71°/53° 💧 None 💨 9 mph

Monday, Sep 28Mon Sep 28

Light rain 60°/59° 💧 0.034 in 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Blue Knob

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Blue Knob

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 6:00 PM

PM2.5 Fine particles Good 3,0µg/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 3,2µg/m³

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

O₃ Ozone Fair 72,9µg/m³

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

NO₂ Nitrogen dioxide Good 1,4µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Blue Knob

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 4,5Moderate 🙂Fair

Tomorrow UV 4,5Moderate 🙂Fair

Wednesday UV 0,3Low 😐Moderate

Hourly UV index today

6:00 PMUV 1,5 7:00 PMUV 0,6

Hourly UV index tomorrow

7:00 AMUV 0,0 8:00 AMUV 0,3 9:00 AMUV 1,1 10:00 AMUV 2,1 11:00 AMUV 3,2 12:00 PMUV 4,0 1:00 PMUV 4,5 2:00 PMUV 4,5 3:00 PMUV 4,1 4:00 PMUV 3,5 5:00 PMUV 2,6 6:00 PMUV 1,5 7:00 PMUV 0,6

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged 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 Blue Knob

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · BLUE KNOB, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

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

78/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:59 PM–5:21 AM

☁ Cloud cover 14% Real hourly forecast for the best viewing hour.

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

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 68° 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 min70%

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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The technical data used to calculate this forecast for Blue Knob were updated today at 5:08 PM. The displayed forecasts cover the period through 15/09/2026 at 3:00 PM. Weather and air-quality data provided by WEATHER-INFO.COM. UV-index data derived from ECMWF UVB by WEATHER PORTAL. Weather information is generated automatically and periodically reviewed by our technical team. For informational purposes only.