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Current weather in Slippery Rock is overcast clouds.

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

Now · 6:37 AM

Slippery Rock Weather & Hourly Forecast

United States · Pennsylvania · 16057

52°F

Overcast night

Feels like: 46°F

💧 Humidity 94% 🌡 Pressure 30.36 inHg 💨 Wind 12 mph 👁 Visibility 13.7 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise 7:07 AM 🌇 Sunset 7:17 PM

Hourly Forecast for Slippery Rock

Today

7:00 AM

Overcast night

52° 💧 0.000 in 💨 12 mph H 94%30.36 inHg

10:00 AM

Mostly cloudy

55° 💧 None 💨 13 mph H 69%30.39 inHg

1:00 PM

Overcast

61° 💧 None 💨 13 mph H 50%30.36 inHg

4:00 PM

Mostly cloudy

64° 💧 None 💨 11 mph H 51%30.33 inHg

7:00 PM

Overcast

59° 💧 None 💨 10 mph H 61%30.33 inHg

10:00 PM

Overcast night

55° 💧 None 💨 9 mph H 70%30.39 inHg

Tomorrow

1:00 AM

Overcast night

52° 💧 None 💨 9 mph H 78%30.39 inHg

4:00 AM

Partly cloudy night

49° 💧 None 💨 8 mph H 87%30.39 inHg

7:00 AM

Mostly clear night

47° 💧 None 💨 9 mph H 86%30.42 inHg

10:00 AM

Mostly cloudy

53° 💧 None 💨 10 mph H 67%30.42 inHg

1:00 PM

Partly cloudy

60° 💧 None 💨 8 mph H 54%30.39 inHg

4:00 PM

Mostly cloudy

64° 💧 None 💨 8 mph H 49%30.30 inHg

7:00 PM

Sunny

57° 💧 None 💨 3 mph H 70%30.30 inHg

10:00 PM

Clear night

51° 💧 None 💨 7 mph H 78%30.30 inHg

Friday

1:00 AM

Clear night

48° 💧 None 💨 8 mph H 77%30.33 inHg

4:00 AM

Clear night

45° 💧 None 💨 7 mph H 87%30.30 inHg

Today

7:00 AM

Overcast night

52° 💧 0.000 in 💨 12 mph H 94%30.36 inHg

8:00 AM

Overcast

53° 💧 None 💨 12 mph H 91%30.39 inHg

9:00 AM

Mostly cloudy

53° 💧 None 💨 11 mph H 85%30.39 inHg

10:00 AM

Mostly cloudy

55° 💧 None 💨 13 mph H 69%30.39 inHg

11:00 AM

Mostly cloudy

58° 💧 None 💨 13 mph H 56%30.39 inHg

12:00 PM

Mostly cloudy

60° 💧 None 💨 13 mph H 52%30.39 inHg

1:00 PM

Overcast

61° 💧 None 💨 13 mph H 50%30.36 inHg

2:00 PM

Mostly cloudy

63° 💧 None 💨 12 mph H 50%30.36 inHg

3:00 PM

Mostly sunny

63° 💧 None 💨 11 mph H 49%30.36 inHg

4:00 PM

Mostly cloudy

64° 💧 None 💨 11 mph H 51%30.33 inHg

5:00 PM

Mostly sunny

63° 💧 None 💨 11 mph H 53%30.33 inHg

6:00 PM

Partly cloudy

62° 💧 None 💨 9 mph H 58%30.33 inHg

7:00 PM

Overcast

59° 💧 None 💨 10 mph H 61%30.33 inHg

8:00 PM

Overcast night

57° 💧 None 💨 10 mph H 62%30.36 inHg

9:00 PM

Overcast night

56° 💧 None 💨 9 mph H 66%30.39 inHg

10:00 PM

Overcast night

55° 💧 None 💨 9 mph H 70%30.39 inHg

11:00 PM

Overcast night

54° 💧 None 💨 9 mph H 73%30.39 inHg

Tomorrow

12:00 AM

Overcast night

53° 💧 None 💨 9 mph H 74%30.39 inHg

1:00 AM

Overcast night

52° 💧 None 💨 9 mph H 78%30.39 inHg

2:00 AM

Mostly cloudy night

51° 💧 None 💨 8 mph H 81%30.39 inHg

3:00 AM

Mostly cloudy night

50° 💧 None 💨 7 mph H 85%30.39 inHg

4:00 AM

Partly cloudy night

49° 💧 None 💨 8 mph H 87%30.39 inHg

5:00 AM

Mostly cloudy night

48° 💧 None 💨 8 mph H 87%30.39 inHg

6:00 AM

Mostly clear night

48° 💧 None 💨 8 mph H 87%30.39 inHg

7:00 AM

Mostly clear night

47° 💧 None 💨 9 mph H 86%30.42 inHg

8:00 AM

Sunny

47° 💧 None 💨 9 mph H 81%30.42 inHg

9:00 AM

Partly cloudy

50° 💧 None 💨 9 mph H 74%30.42 inHg

10:00 AM

Mostly cloudy

53° 💧 None 💨 10 mph H 67%30.42 inHg

11:00 AM

Mostly cloudy

55° 💧 None 💨 9 mph H 62%30.42 inHg

12:00 PM

Mostly cloudy

58° 💧 None 💨 8 mph H 57%30.39 inHg

1:00 PM

Partly cloudy

60° 💧 None 💨 8 mph H 54%30.39 inHg

2:00 PM

Partly cloudy

62° 💧 None 💨 9 mph H 52%30.36 inHg

3:00 PM

Partly cloudy

63° 💧 None 💨 9 mph H 50%30.30 inHg

4:00 PM

Mostly cloudy

64° 💧 None 💨 8 mph H 49%30.30 inHg

5:00 PM

Mostly sunny

64° 💧 None 💨 8 mph H 49%30.30 inHg

6:00 PM

Sunny

62° 💧 None 💨 5 mph H 57%30.30 inHg

7:00 PM

Sunny

57° 💧 None 💨 3 mph H 70%30.30 inHg

8:00 PM

Clear night

53° 💧 None 💨 3 mph H 75%30.30 inHg

9:00 PM

Clear night

51° 💧 None 💨 4 mph H 82%30.30 inHg

10:00 PM

Clear night

51° 💧 None 💨 7 mph H 78%30.30 inHg

11:00 PM

Clear night

50° 💧 None 💨 7 mph H 73%30.30 inHg

Friday

12:00 AM

Clear night

49° 💧 None 💨 8 mph H 74%30.33 inHg

1:00 AM

Clear night

48° 💧 None 💨 8 mph H 77%30.33 inHg

2:00 AM

Clear night

47° 💧 None 💨 7 mph H 80%30.30 inHg

3:00 AM

Clear night

46° 💧 None 💨 7 mph H 84%30.30 inHg

4:00 AM

Clear night

45° 💧 None 💨 7 mph H 87%30.30 inHg

5:00 AM

Clear night

45° 💧 None 💨 6 mph H 90%30.30 inHg

6:00 AM

Clear night

44° 💧 None 💨 6 mph H 92%30.30 inHg

7:00 AM

Clear night

44° 💧 None 💨 6 mph H 93%30.33 inHg

8:00 AM

Sunny

45° 💧 None 💨 7 mph H 90%30.33 inHg

9:00 AM

Sunny

50° 💧 None 💨 5 mph H 85%30.33 inHg

10:00 AM

Sunny

55° 💧 None 💨 5 mph H 77%30.33 inHg

11:00 AM

Sunny

60° 💧 None 💨 6 mph H 68%30.30 inHg

12:00 PM

Sunny

62° 💧 None 💨 6 mph H 59%30.30 inHg

1:00 PM

Sunny

64° 💧 None 💨 6 mph H 55%30.27 inHg

2:00 PM

Sunny

66° 💧 None 💨 6 mph H 53%30.24 inHg

3:00 PM

Sunny

67° 💧 None 💨 6 mph H 54%30.21 inHg

4:00 PM

Sunny

67° 💧 None 💨 6 mph H 54%30.21 inHg

5:00 PM

Sunny

66° 💧 None 💨 7 mph H 57%30.21 inHg

6:00 PM

Mostly sunny

65° 💧 None 💨 6 mph H 65%30.21 inHg

7:00 PM

Partly cloudy

60° 💧 None 💨 5 mph H 77%30.21 inHg

8:00 PM

Mostly cloudy night

57° 💧 None 💨 7 mph H 84%30.21 inHg

11:00 PM

Mostly cloudy night

54° 💧 None 💨 8 mph H 87%30.24 inHg

Saturday

2:00 AM

Partly cloudy night

51° 💧 None 💨 6 mph H 95%30.24 inHg

5:00 AM

Clear night

48° 💧 None 💨 6 mph H 96%30.21 inHg

8:00 AM

Sunny

49° 💧 None 💨 7 mph H 93%30.24 inHg

11:00 AM

Sunny

63° 💧 None 💨 4 mph H 70%30.24 inHg

2:00 PM

Sunny

69° 💧 None 💨 7 mph H 47%30.18 inHg

5:00 PM

Sunny

68° 💧 None 💨 7 mph H 47%30.12 inHg

8:00 PM

Mostly clear night

59° 💧 None 💨 7 mph H 75%30.12 inHg

11:00 PM

Clear night

55° 💧 None 💨 8 mph H 77%30.15 inHg

Sunday

2:00 AM

Clear night

50° 💧 None 💨 5 mph H 84%30.12 inHg

5:00 AM

Mostly clear night

49° 💧 None 💨 6 mph H 84%30.09 inHg

8:00 AM

Overcast

53° 💧 None 💨 7 mph H 84%30.09 inHg

11:00 AM

Overcast

63° 💧 None 💨 10 mph H 68%30.09 inHg

2:00 PM

Partly cloudy

68° 💧 None 💨 11 mph H 57%30.03 inHg

5:00 PM

Mostly cloudy

66° 💧 None 💨 11 mph H 56%30.00 inHg

8:00 PM

Partly cloudy night

57° 💧 None 💨 8 mph H 75%30.00 inHg

11:00 PM

Partly cloudy night

53° 💧 None 💨 6 mph H 85%30.00 inHg

Monday

2:00 AM

Mostly clear night

51° 💧 None 💨 5 mph H 88%29.97 inHg

5:00 AM

Mostly clear night

49° 💧 None 💨 6 mph H 93%29.97 inHg

8:00 AM

Overcast

52° 💧 None 💨 6 mph H 90%30.00 inHg

11:00 AM

Mostly sunny

62° 💧 None 💨 5 mph H 77%29.97 inHg

2:00 PM

Sunny

68° 💧 None 💨 7 mph H 56%29.94 inHg

5:00 PM

Mostly sunny

69° 💧 None 💨 7 mph H 56%29.94 inHg

8:00 PM

Clear night

59° 💧 None 💨 6 mph H 81%29.97 inHg

Tuesday

2:00 AM

Mostly clear night

51° 💧 None 💨 2 mph H 91%30.00 inHg

8:00 AM

Sunny

50° 💧 None 💨 2 mph H 95%30.03 inHg

2:00 PM

Partly cloudy

71° 💧 None 💨 4 mph H 56%30.00 inHg

8:00 PM

Clear night

60° 💧 None 💨 4 mph H 85%29.94 inHg

Wednesday

2:00 AM

Clear night

55° 💧 None 💨 7 mph H 91%29.94 inHg

8:00 AM

Mostly sunny

57° 💧 None 💨 9 mph H 81%29.94 inHg

2:00 PM

Mostly cloudy

78° 💧 None 💨 12 mph H 58%29.85 inHg

8:00 PM

Partly cloudy night

71° 💧 None 💨 10 mph H 75%29.83 inHg

Thursday

2:00 AM

Overcast night

69° 💧 None 💨 11 mph H 66%29.83 inHg

8:00 AM

Overcast

65° 💧 None 💨 13 mph H 75%29.77 inHg

2:00 PM

Light rain

68° 💧 None 💨 15 mph H 97%29.71 inHg

8:00 PM

Light rain

65° 💧 None 💨 10 mph H 95%29.74 inHg

Friday

2:00 AM

Clear night

57° 💧 None 💨 7 mph H 96%29.80 inHg

8:00 AM

Light rain

56° 💧 None 💨 9 mph H 97%29.85 inHg

2:00 PM

Mostly sunny

61° 💧 None 💨 12 mph H 64%29.85 inHg

8:00 PM

Partly cloudy night

52° 💧 None 💨 7 mph H 89%29.97 inHg

Saturday

2:00 AM

Clear night

48° 💧 None 💨 6 mph H 98%30.03 inHg

8:00 AM

Partly cloudy

47° 💧 None 💨 6 mph H 96%30.12 inHg

2:00 PM

Overcast

56° 💧 None 💨 8 mph H 61%30.15 inHg

8:00 PM

Overcast night

52° 💧 None 💨 4 mph H 72%30.21 inHg

Sunday

2:00 AM

Partly cloudy night

47° 💧 None 💨 0 mph H 84%30.24 inHg

8:00 AM

Overcast

49° 💧 None 💨 2 mph H 80%30.30 inHg

2:00 PM

Overcast

57° 💧 None 💨 6 mph H 53%30.27 inHg

8:00 PM

Overcast night

53° 💧 None 💨 1 mph H 72%30.24 inHg

Monday

2:00 AM

Mostly clear night

46° 💧 None 💨 4 mph H 82%30.24 inHg

8:00 AM

Mostly cloudy

44° 💧 None 💨 3 mph H 88%30.24 inHg

2:00 PM

Partly cloudy

62° 💧 None 💨 4 mph H 50%30.18 inHg

8:00 PM

Clear night

53° 💧 None 💨 4 mph H 77%30.15 inHg

Tuesday

2:00 AM

Mostly cloudy night

51° 💧 None 💨 6 mph H 84%30.12 inHg

8:00 AM

Overcast

55° 💧 None 💨 8 mph H 74%30.09 inHg

2:00 PM

Mostly sunny

70° 💧 None 💨 14 mph H 57%29.91 inHg

8:00 PM

Overcast night

68° 💧 None 💨 11 mph H 67%29.83 inHg

Wednesday

2:00 AM

Partly cloudy night

58° 💧 None 💨 11 mph H 97%29.83 inHg

8:00 AM

Sunny

47° 💧 None 💨 7 mph H 94%29.88 inHg

2:00 PM

Mostly sunny

57° 💧 None 💨 14 mph H 54%29.85 inHg

8:00 PM

Clear night

49° 💧 None 💨 7 mph H 68%29.88 inHg

In Slippery Rock and, more broadly, across the state of Pennsylvania: This morning will start with mostly cloudy skies and mild temperatures ranging from 55 to 64 degrees Fahrenheit. Light northeast winds will blow at around 8 mph, with gusts reaching up to 19 mph. As the day progresses, the sky will remain mostly cloudy, and there is a high likelihood of rain, with total accumulation around 0.24 inches. Winds will continue to be light, but gusts may be slightly stronger during the storm. Temperatures are expected to stay within the mild range through the afternoon, making for a relatively comfortable day despite the unsettled weather. Be prepared for the possibility of rain, especially later in the day.

15-Day Weather Outlook for Slippery Rock

TomorrowTomorrow

Overcast 64°/47° 💧 None 💨 10 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 67°/44° 💧 0.050 in 💨 8 mph

Saturday, Sep 26Sat Sep 26

Partly cloudy 69°/48° 💧 0.001 in 💨 8 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 68°/49° 💧 None 💨 11 mph

Monday, Sep 28Mon Sep 28

Mostly sunny 69°/49° 💧 None 💨 7 mph

Tuesday, Sep 29Tue Sep 29

Mostly sunny 71°/50° 💧 None 💨 4 mph

Wednesday, Sep 30Wed Sep 30

Mostly cloudy 78°/55° 💧 0.011 in 💨 12 mph

Thursday, Oct 1Thu Oct 1

Light rain 69°/65° 💧 0.297 in 💨 15 mph

Friday, Oct 2Fri Oct 2

Light rain 61°/52° 💧 0.093 in 💨 12 mph

Saturday, Oct 3Sat Oct 3

Overcast 56°/47° 💧 0.022 in 💨 8 mph

Sunday, Oct 4Sun Oct 4

Partly cloudy 57°/47° 💧 None 💨 6 mph

Monday, Oct 5Mon Oct 5

Mostly sunny 62°/44° 💧 None 💨 4 mph

Tuesday, Oct 6Tue Oct 6

Mostly cloudy 70°/51° 💧 None 💨 14 mph

Wednesday, Oct 7Wed Oct 7

Mostly sunny 58°/47° 💧 0.172 in 💨 14 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Slippery Rock

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Slippery Rock

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 7:00 AM

PM2.5 Fine particles Good 1,8µg/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 2,2µg/m³

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

O₃ Ozone Good 40,2µg/m³

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

NO₂ Nitrogen dioxide Good 7,1µg/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 Slippery Rock

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 5,3Moderate 😊Good

Tomorrow UV 5,4Moderate 🙂Fair

Friday UV 5,5Moderate 🙂Fair

Saturday UV 5,1Moderate 🙂Fair

Sunday UV 5,0Moderate 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 5,0Moderate —Unavailable

Hourly UV index today

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

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

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 Slippery Rock

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SLIPPERY ROCK, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 6:00 AM–7:00 AM.

75/100Best-hour score

BEST TIME TONIGHT 6:00 AM–7:00 AM Astronomical darkness: 8:48 PM–5:37 AM

☁ Cloud cover 34% Real hourly forecast for the best viewing hour.

☾ Moonlight 95% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 58° 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 min61%

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

SEP 20–NOV 20

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

ACTIVE NOW

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

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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 Slippery Rock were last refreshed today at 6:37 AM. The current forecast period extends through 25/09/2026 at 4:00 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.