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Current weather in Sewickley is few clouds.

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Is the weather forecast for Sewickley updated regularly?

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

Now · 6:24 PM

Sewickley Weather & Hourly Forecast

United States · Pennsylvania · 15143

84°F

Mostly sunny

Feels like: 85°F

💧 Humidity 59% 🌡 Pressure 29.97 inHg 💨 Wind 11 mph 👁 Visibility 23.2 mi ☁ Clouds 27% ☀️ UV index 1.9 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Sewickley

Today

7:00 PM

Mostly cloudy

82° 💧 None 💨 10 mph H 64%29.94 inHg

10:00 PM

Light thunderstorms

74° 💧 0.367 in 💨 9 mph H 87%29.97 inHg

Tomorrow

1:00 AM

Light rain

70° 💧 0.005 in 💨 8 mph H 98%29.97 inHg

4:00 AM

Overcast night

70° 💧 0.000 in 💨 7 mph H 99%29.97 inHg

7:00 AM

Overcast

71° 💧 0.004 in 💨 4 mph H 99%29.97 inHg

10:00 AM

Overcast

74° 💧 0.006 in 💨 4 mph H 84%30.00 inHg

1:00 PM

Overcast

78° 💧 None 💨 7 mph H 67%29.97 inHg

4:00 PM

Overcast

79° 💧 None 💨 7 mph H 60%29.91 inHg

7:00 PM

Overcast

73° 💧 None 💨 3 mph H 78%29.91 inHg

10:00 PM

Overcast night

69° 💧 None 💨 2 mph H 90%29.94 inHg

Friday

1:00 AM

Overcast night

68° 💧 None 💨 4 mph H 94%29.97 inHg

4:00 AM

Partly cloudy night

65° 💧 None 💨 5 mph H 95%29.94 inHg

7:00 AM

Mostly cloudy

62° 💧 None 💨 5 mph H 96%30.00 inHg

10:00 AM

Sunny

69° 💧 0.000 in 💨 6 mph H 65%30.03 inHg

1:00 PM

Sunny

76° 💧 None 💨 4 mph H 51%30.03 inHg

4:00 PM

Sunny

78° 💧 None 💨 4 mph H 49%29.97 inHg

Today

7:00 PM

Mostly cloudy

82° 💧 None 💨 10 mph H 64%29.94 inHg

8:00 PM

Mostly cloudy night

80° 💧 None 💨 9 mph H 69%29.94 inHg

9:00 PM

Mostly cloudy night

79° 💧 None 💨 9 mph H 71%29.94 inHg

10:00 PM

Light thunderstorms

74° 💧 0.096 in 💨 9 mph H 87%29.97 inHg

11:00 PM

Thunderstorms

72° 💧 0.113 in 💨 7 mph H 98%30.00 inHg

Tomorrow

12:00 AM

Thunderstorms

71° 💧 0.158 in 💨 9 mph H 98%30.00 inHg

1:00 AM

Light rain

70° 💧 0.005 in 💨 8 mph H 98%29.97 inHg

2:00 AM

Mostly cloudy night

70° 💧 None 💨 8 mph H 99%29.97 inHg

3:00 AM

Overcast night

70° 💧 0.000 in 💨 7 mph H 99%29.97 inHg

4:00 AM

Overcast night

70° 💧 0.000 in 💨 7 mph H 99%29.97 inHg

5:00 AM

Overcast night

70° 💧 None 💨 6 mph H 99%29.97 inHg

6:00 AM

Overcast night

70° 💧 None 💨 5 mph H 99%29.97 inHg

7:00 AM

Overcast

71° 💧 0.000 in 💨 4 mph H 99%29.97 inHg

8:00 AM

Mostly cloudy

71° 💧 0.002 in 💨 4 mph H 97%30.00 inHg

9:00 AM

Mostly cloudy

71° 💧 0.002 in 💨 3 mph H 93%30.00 inHg

10:00 AM

Overcast

74° 💧 0.002 in 💨 4 mph H 84%30.00 inHg

11:00 AM

Overcast

77° 💧 0.003 in 💨 6 mph H 73%30.00 inHg

12:00 PM

Overcast

77° 💧 0.000 in 💨 7 mph H 71%29.97 inHg

1:00 PM

Overcast

78° 💧 None 💨 7 mph H 67%29.97 inHg

2:00 PM

Overcast

80° 💧 None 💨 7 mph H 60%29.94 inHg

3:00 PM

Overcast

80° 💧 None 💨 8 mph H 60%29.94 inHg

4:00 PM

Overcast

79° 💧 None 💨 7 mph H 60%29.91 inHg

5:00 PM

Overcast

78° 💧 None 💨 6 mph H 61%29.91 inHg

6:00 PM

Overcast

75° 💧 None 💨 5 mph H 70%29.91 inHg

7:00 PM

Overcast

73° 💧 None 💨 3 mph H 78%29.91 inHg

8:00 PM

Overcast night

72° 💧 None 💨 4 mph H 83%29.91 inHg

9:00 PM

Mostly cloudy night

71° 💧 None 💨 3 mph H 86%29.94 inHg

10:00 PM

Overcast night

69° 💧 None 💨 2 mph H 90%29.94 inHg

11:00 PM

Overcast night

68° 💧 None 💨 2 mph H 92%29.97 inHg

Friday

12:00 AM

Overcast night

68° 💧 None 💨 3 mph H 92%29.94 inHg

1:00 AM

Overcast night

68° 💧 None 💨 4 mph H 94%29.97 inHg

2:00 AM

Overcast night

67° 💧 None 💨 4 mph H 95%29.97 inHg

3:00 AM

Mostly cloudy night

67° 💧 None 💨 4 mph H 95%29.94 inHg

4:00 AM

Partly cloudy night

65° 💧 None 💨 5 mph H 95%29.94 inHg

5:00 AM

Clear night

64° 💧 None 💨 5 mph H 96%29.97 inHg

6:00 AM

Partly cloudy night

63° 💧 None 💨 5 mph H 97%30.00 inHg

7:00 AM

Mostly cloudy

62° 💧 None 💨 5 mph H 96%30.00 inHg

8:00 AM

Mostly cloudy

63° 💧 None 💨 4 mph H 91%30.03 inHg

9:00 AM

Sunny

66° 💧 None 💨 5 mph H 81%30.03 inHg

10:00 AM

Sunny

69° 💧 None 💨 6 mph H 65%30.03 inHg

11:00 AM

Sunny

72° 💧 0.000 in 💨 6 mph H 54%30.03 inHg

12:00 PM

Sunny

74° 💧 None 💨 5 mph H 52%30.03 inHg

1:00 PM

Sunny

76° 💧 None 💨 4 mph H 51%30.03 inHg

2:00 PM

Sunny

77° 💧 None 💨 4 mph H 50%30.00 inHg

3:00 PM

Sunny

78° 💧 None 💨 4 mph H 49%30.00 inHg

4:00 PM

Sunny

78° 💧 None 💨 4 mph H 49%29.97 inHg

5:00 PM

Sunny

78° 💧 None 💨 4 mph H 49%29.97 inHg

6:00 PM

Sunny

76° 💧 None 💨 5 mph H 51%29.94 inHg

7:00 PM

Sunny

73° 💧 None 💨 4 mph H 61%29.97 inHg

8:00 PM

Partly cloudy night

69° 💧 None 💨 4 mph H 69%29.97 inHg

9:00 PM

Partly cloudy night

68° 💧 None 💨 5 mph H 70%30.00 inHg

10:00 PM

Partly cloudy night

66° 💧 None 💨 5 mph H 73%30.00 inHg

11:00 PM

Overcast night

65° 💧 None 💨 5 mph H 76%30.00 inHg

Saturday

12:00 AM

Overcast night

64° 💧 None 💨 5 mph H 75%30.00 inHg

1:00 AM

Mostly cloudy night

63° 💧 None 💨 5 mph H 74%30.00 inHg

2:00 AM

Mostly clear night

62° 💧 None 💨 5 mph H 76%30.00 inHg

3:00 AM

Mostly cloudy night

62° 💧 None 💨 4 mph H 80%29.97 inHg

4:00 AM

Mostly cloudy night

62° 💧 None 💨 4 mph H 84%29.97 inHg

5:00 AM

Mostly cloudy night

62° 💧 None 💨 3 mph H 87%29.97 inHg

6:00 AM

Mostly cloudy night

62° 💧 None 💨 3 mph H 90%29.97 inHg

7:00 AM

Mostly cloudy

63° 💧 None 💨 4 mph H 91%30.00 inHg

8:00 AM

Partly cloudy

66° 💧 None 💨 6 mph H 87%30.00 inHg

11:00 AM

Light rain

75° 💧 None 💨 9 mph H 78%30.00 inHg

2:00 PM

Overcast

82° 💧 None 💨 8 mph H 66%29.94 inHg

5:00 PM

Light rain

74° 💧 None 💨 5 mph H 93%29.94 inHg

8:00 PM

Mostly clear night

71° 💧 None 💨 6 mph H 98%29.94 inHg

11:00 PM

Partly cloudy night

70° 💧 None 💨 4 mph H 99%29.97 inHg

Sunday

2:00 AM

Light rain

68° 💧 None 💨 5 mph H 99%30.00 inHg

5:00 AM

Overcast night

68° 💧 None 💨 5 mph H 99%30.00 inHg

8:00 AM

Overcast

70° 💧 None 💨 6 mph H 99%30.03 inHg

11:00 AM

Light rain

74° 💧 None 💨 5 mph H 88%30.06 inHg

2:00 PM

Light rain

82° 💧 None 💨 4 mph H 64%30.03 inHg

5:00 PM

Mostly sunny

83° 💧 None 💨 5 mph H 58%29.97 inHg

8:00 PM

Partly cloudy night

75° 💧 None 💨 3 mph H 82%30.00 inHg

11:00 PM

Mostly clear night

70° 💧 None 💨 2 mph H 93%30.06 inHg

Monday

2:00 AM

Mostly clear night

67° 💧 None 💨 3 mph H 99%30.03 inHg

5:00 AM

Mostly clear night

66° 💧 None 💨 4 mph H 97%30.06 inHg

8:00 AM

Mostly sunny

68° 💧 None 💨 4 mph H 97%30.09 inHg

11:00 AM

Mostly sunny

79° 💧 None 💨 6 mph H 74%30.09 inHg

2:00 PM

Partly cloudy

85° 💧 None 💨 8 mph H 57%30.06 inHg

5:00 PM

Sunny

85° 💧 None 💨 7 mph H 57%30.00 inHg

8:00 PM

Mostly clear night

76° 💧 None 💨 4 mph H 81%30.03 inHg

11:00 PM

Mostly clear night

72° 💧 None 💨 6 mph H 91%30.06 inHg

Tuesday

2:00 AM

Clear night

70° 💧 None 💨 5 mph H 93%30.03 inHg

5:00 AM

Clear night

68° 💧 None 💨 5 mph H 95%30.06 inHg

8:00 AM

Sunny

69° 💧 None 💨 6 mph H 94%30.09 inHg

2:00 PM

Sunny

88° 💧 None 💨 8 mph H 49%30.06 inHg

8:00 PM

Clear night

77° 💧 None 💨 5 mph H 75%30.03 inHg

Wednesday

2:00 AM

Clear night

72° 💧 None 💨 5 mph H 92%30.09 inHg

8:00 AM

Light rain

70° 💧 None 💨 3 mph H 97%30.15 inHg

2:00 PM

Partly cloudy

79° 💧 None 💨 4 mph H 73%30.15 inHg

8:00 PM

Light rain

74° 💧 None 💨 3 mph H 87%30.15 inHg

Thursday

2:00 AM

Clear night

67° 💧 None 💨 2 mph H 96%30.12 inHg

8:00 AM

Overcast

69° 💧 None 💨 1 mph H 95%30.12 inHg

2:00 PM

Mostly cloudy

82° 💧 None 💨 5 mph H 66%30.03 inHg

8:00 PM

Mostly cloudy night

71° 💧 None 💨 7 mph H 98%29.94 inHg

Friday

2:00 AM

Heavy rain

69° 💧 None 💨 8 mph H 99%29.88 inHg

8:00 AM

Sunny

60° 💧 None 💨 9 mph H 95%29.97 inHg

2:00 PM

Overcast

71° 💧 None 💨 8 mph H 59%30.00 inHg

8:00 PM

Clear night

64° 💧 None 💨 5 mph H 80%30.00 inHg

Saturday

2:00 AM

Clear night

58° 💧 None 💨 3 mph H 95%30.03 inHg

8:00 AM

Mostly sunny

57° 💧 None 💨 1 mph H 97%30.00 inHg

2:00 PM

Mostly sunny

72° 💧 None 💨 6 mph H 50%29.97 inHg

8:00 PM

Mostly clear night

62° 💧 None 💨 3 mph H 74%29.94 inHg

Sunday

2:00 AM

Clear night

55° 💧 None 💨 2 mph H 92%30.00 inHg

8:00 AM

Sunny

55° 💧 None 💨 5 mph H 92%30.06 inHg

2:00 PM

Light rain

68° 💧 None 💨 7 mph H 63%30.03 inHg

8:00 PM

Clear night

59° 💧 None 💨 9 mph H 70%30.09 inHg

Monday

2:00 AM

Clear night

49° 💧 None 💨 8 mph H 81%30.21 inHg

8:00 AM

Sunny

47° 💧 None 💨 7 mph H 79%30.27 inHg

2:00 PM

Partly cloudy

62° 💧 None 💨 10 mph H 47%30.27 inHg

8:00 PM

Clear night

55° 💧 None 💨 8 mph H 60%30.30 inHg

Tuesday

2:00 AM

Clear night

47° 💧 None 💨 9 mph H 68%30.42 inHg

8:00 AM

Overcast

45° 💧 None 💨 8 mph H 75%30.47 inHg

2:00 PM

Overcast

57° 💧 None 💨 10 mph H 51%30.45 inHg

8:00 PM

Overcast night

54° 💧 None 💨 8 mph H 56%30.42 inHg

Wednesday

2:00 AM

Mostly cloudy night

51° 💧 None 💨 7 mph H 66%30.42 inHg

8:00 AM

Partly cloudy

48° 💧 None 💨 7 mph H 78%30.47 inHg

2:00 PM

Sunny

63° 💧 None 💨 7 mph H 48%30.39 inHg

8:00 PM

Clear night

56° 💧 None 💨 6 mph H 68%30.33 inHg

Thursday

2:00 AM

Partly cloudy night

49° 💧 None 💨 6 mph H 79%30.33 inHg

8:00 AM

Overcast

49° 💧 None 💨 6 mph H 85%30.30 inHg

In Sewickley and, more broadly, across the state of Pennsylvania: The evening will feature mostly sunny skies with a few clouds drifting through. Temperatures are expected to remain mild to warm, ranging from 76 to 83 degrees Fahrenheit. A slight chance of rain exists, with potential accumulations around 0.01 inches and the highest likelihood of rain around 80%. Winds will be light, coming from the southwest at up to 7 mph, with gusts reaching 26 mph. Overall, it should be a pleasant evening, but a brief shower may occur, especially in the later hours.

15-Day Weather Outlook for Sewickley

TomorrowTomorrow

Light thunderstorms 80°/70° 💧 None 💨 9 mph

Friday, Sep 11Fri Sep 11

Overcast 78°/62° 💧 None 💨 6 mph

Saturday, Sep 12Sat Sep 12

Light rain 82°/62° 💧 0.574 in 💨 9 mph

Sunday, Sep 13Sun Sep 13

Light rain 83°/68° 💧 0.377 in 💨 6 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 85°/66° 💧 0.004 in 💨 8 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 88°/68° 💧 None 💨 8 mph

Wednesday, Sep 16Wed Sep 16

Light rain 79°/70° 💧 0.029 in 💨 5 mph

Thursday, Sep 17Thu Sep 17

Light rain 82°/67° 💧 0.050 in 💨 5 mph

Friday, Sep 18Fri Sep 18

Heavy rain 71°/60° 💧 1.095 in 💨 9 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 72°/57° 💧 0.010 in 💨 6 mph

Sunday, Sep 20Sun Sep 20

Light rain 68°/55° 💧 0.014 in 💨 7 mph

Monday, Sep 21Mon Sep 21

Partly cloudy 62°/47° 💧 0.007 in 💨 10 mph

Tuesday, Sep 22Tue Sep 22

Overcast 57°/45° 💧 None 💨 10 mph

Wednesday, Sep 23Wed Sep 23

Overcast 63°/48° 💧 None 💨 8 mph

Thursday, Sep 24Thu Sep 24

Partly cloudy 56°/49° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Sewickley

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Sewickley

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 7:00 PM

PM2.5 Fine particles Good 5,7µg/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 6,4µg/m³

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

O₃ Ozone Fair 86,3µg/m³

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

NO₂ Nitrogen dioxide Good 2,1µg/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 Sewickley

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 5,7Moderate 🙂Fair

Tomorrow UV 1,2Low 🙂Fair

Friday UV 6,8High 🙂Fair

Saturday UV 5,1Moderate 😊Good

Sunday UV 7,0High 🙂Fair

Monday UV 7,0High —Unavailable

Tuesday UV 7,0High —Unavailable

Hourly UV index today

7:00 PMUV 0,1

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.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

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 Sewickley

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SEWICKLEY, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Fair observing conditions. Best local viewing window: 9:00 PM–10:00 PM.

50/100Best-hour score

BEST TIME TONIGHT 9:00 PM–10:00 PM Astronomical darkness: 9:13 PM–5:23 AM

☁ Cloud cover 69% Real hourly forecast for the best viewing hour.

☾ Moonlight 4% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 5° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min7%

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

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Forecast data for Sewickley were last refreshed today at 5:41 PM. The current forecast period extends through 11/09/2026 at 4:00 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.