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As of 00:59 EDT

Weather in Slippery Rock, PA

70°Current weather

Slippery Rock, Sunday, 9 August, 00:59

Clear. Feels like 71°. High 86°, low 65°.

Pressure30.00 inHg
Wind3.7 mph SW
Humidity94%
Visibility6.2 mi
Dew point69°
Mon, 1082° / 68°0.63Rain
82 °Rain

Slippery Rock, Monday, 10 August

Rain. High 82°, low 68°.

Pressure30.00 inHg
Wind11 mph SW
Humidity89%
Visibility6.2 mi
Dew point69°
Tue, 1179° / 62°0.18Rain
79 °Rain

Slippery Rock, Tuesday, 11 August

Rain. High 79°, low 62°.

Pressure29.94 inHg
Wind9 mph SW
Humidity69%
Visibility6.2 mi
Dew point66°
Wed, 1281° / 65°0.05Light rain
81 °Light rain

Slippery Rock, Wednesday, 12 August

Light rain. High 81°, low 65°.

Pressure29.77 inHg
Wind10.1 mph W
Humidity68%
Visibility6.2 mi
Dew point67°
Thu, 1372° / 55°0Overcast
72 °Overcast

Slippery Rock, Thursday, 13 August

Overcast. High 72°, low 55°.

Pressure29.94 inHg
Wind12.7 mph NW
Humidity40%
Visibility—
Dew point45°
Fri, 1474° / 51°0Clear
74 °Clear

Slippery Rock, Friday, 14 August

Clear. High 74°, low 51°.

Pressure30.06 inHg
Wind6.9 mph N
Humidity43%
Visibility—
Dew point48°
Sat, 1574° / 54°0Mostly clear
74 °Mostly clear

Slippery Rock, Saturday, 15 August

Mostly clear. High 74°, low 54°.

Pressure30.24 inHg
Wind8.9 mph N
Humidity42%
Visibility—
Dew point48°
Sun, 1676° / 50°0Partly cloudy
76 °Partly cloudy

Slippery Rock, Sunday, 16 August

Partly cloudy. High 76°, low 50°.

Pressure30.15 inHg
Wind3.4 mph E
Humidity41%
Visibility—
Dew point48°
Mon, 1773° / 57°0Overcast
73 °Overcast

Slippery Rock, Monday, 17 August

Overcast. High 73°, low 57°.

Pressure30.03 inHg
Wind4.7 mph SW
Humidity56%
Visibility—
Dew point55°
Tue, 1881° / 56°0Clear
81 °Clear

Slippery Rock, Tuesday, 18 August

Clear. High 81°, low 56°.

Pressure30.00 inHg
Wind2.5 mph S
Humidity52%
Visibility—
Dew point59°
Wed, 1983° / 62°0.56Heavy rain
83 °Heavy rain

Slippery Rock, Wednesday, 19 August

Heavy rain. High 83°, low 62°.

Pressure29.83 inHg
Wind10.6 mph SW
Humidity50%
Visibility—
Dew point60°
Thu, 2070° / 55°0.07Light rain
70 °Light rain

Slippery Rock, Thursday, 20 August

Light rain. High 70°, low 55°.

Pressure29.83 inHg
Wind15 mph NW
Humidity65%
Visibility—
Dew point56°
Fri, 2172° / 49°0Clear
72 °Clear

Slippery Rock, Friday, 21 August

Clear. High 72°, low 49°.

Pressure30.00 inHg
Wind11.2 mph N
Humidity41%
Visibility—
Dew point45°
Sat, 2276° / 50°0.02Light rain
76 °Light rain

Slippery Rock, Saturday, 22 August

Light rain. High 76°, low 50°.

Pressure30.03 inHg
Wind6.9 mph S
Humidity37%
Visibility—
Dew point44°
Sun, 2386° / 61°0.03Light rain
86 °Light rain

Slippery Rock, Sunday, 23 August

Light rain. High 86°, low 61°.

Pressure29.88 inHg
Wind11.3 mph W
Humidity66%
Visibility—
Dew point65°
Mon, 2480° / 60°0Clear
80 °Clear

Slippery Rock, Monday, 24 August

Clear. High 80°, low 60°.

Pressure30.00 inHg
Wind11.7 mph NW
Humidity41%
Visibility—
Dew point52°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Slippery Rock, PA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Slippery Rock, PA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.