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As of 19:52 EDT

Weather in Allegheny, PA

77°Current weather

Allegheny, Saturday, 8 August, 19:52

Partly cloudy. Feels like 78°. High 81°, low 67°.

Pressure29.97 inHg
Wind2.8 mph W
Humidity81%
Visibility6.2 mi
Dew point71°
Sun, 0983° / 67°0.04Light rain
83 °Light rain

Allegheny, Sunday, 9 August

Light rain. High 83°, low 67°.

Pressure30.06 inHg
Wind8.1 mph W
Humidity50%
Visibility6.2 mi
Dew point60°
Mon, 1088° / 66°0.08Light rain
88 °Light rain

Allegheny, Monday, 10 August

Light rain. High 88°, low 66°.

Pressure30.03 inHg
Wind6.4 mph SW
Humidity77%
Visibility6.2 mi
Dew point65°
Tue, 1184° / 65°0.14Light rain
84 °Light rain

Allegheny, Tuesday, 11 August

Light rain. High 84°, low 65°.

Pressure29.94 inHg
Wind9.7 mph W
Humidity64%
Visibility6.2 mi
Dew point65°
Wed, 1278° / 66°0.07Light rain
78 °Light rain

Allegheny, Wednesday, 12 August

Light rain. High 78°, low 66°.

Pressure29.83 inHg
Wind9.6 mph W
Humidity78%
Visibility6.2 mi
Dew point66°
Thu, 1374° / 60°0.08Light rain
74 °Light rain

Allegheny, Thursday, 13 August

Light rain. High 74°, low 60°.

Pressure29.85 inHg
Wind13.1 mph W
Humidity76%
Visibility—
Dew point65°
Fri, 1472° / 54°0Clear
72 °Clear

Allegheny, Friday, 14 August

Clear. High 72°, low 54°.

Pressure30.00 inHg
Wind13 mph NW
Humidity41%
Visibility—
Dew point46°
Sat, 1572° / 50°0Clear
72 °Clear

Allegheny, Saturday, 15 August

Clear. High 72°, low 50°.

Pressure30.24 inHg
Wind9.5 mph NW
Humidity40%
Visibility—
Dew point44°
Sun, 1675° / 51°0Mostly clear
75 °Mostly clear

Allegheny, Sunday, 16 August

Mostly clear. High 75°, low 51°.

Pressure30.30 inHg
Wind4.3 mph E
Humidity35%
Visibility—
Dew point43°
Mon, 1781° / 55°0Overcast
81 °Overcast

Allegheny, Monday, 17 August

Overcast. High 81°, low 55°.

Pressure30.09 inHg
Wind8.2 mph W
Humidity37%
Visibility—
Dew point50°
Tue, 1873° / 64°0.12Light rain
73 °Light rain

Allegheny, Tuesday, 18 August

Light rain. High 73°, low 64°.

Pressure29.97 inHg
Wind4.1 mph W
Humidity93%
Visibility—
Dew point66°
Wed, 1977° / 60°0Overcast
77 °Overcast

Allegheny, Wednesday, 19 August

Overcast. High 77°, low 60°.

Pressure29.94 inHg
Wind8.8 mph NW
Humidity44%
Visibility—
Dew point52°
Thu, 2077° / 59°0.03Light rain
77 °Light rain

Allegheny, Thursday, 20 August

Light rain. High 77°, low 59°.

Pressure30.00 inHg
Wind5.4 mph SE
Humidity67%
Visibility—
Dew point54°
Fri, 2176° / 59°0.18Light rain
76 °Light rain

Allegheny, Friday, 21 August

Light rain. High 76°, low 59°.

Pressure29.83 inHg
Wind5.1 mph SE
Humidity74%
Visibility—
Dew point65°
Sat, 2278° / 61°0.01Light rain
78 °Light rain

Allegheny, Saturday, 22 August

Light rain. High 78°, low 61°.

Pressure29.83 inHg
Wind11.7 mph W
Humidity42%
Visibility—
Dew point51°
Sun, 2370° / 51°0Clear
70 °Clear

Allegheny, Sunday, 23 August

Clear. High 70°, low 51°.

Pressure30.09 inHg
Wind12.8 mph NW
Humidity36%
Visibility—
Dew point38°

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 Allegheny, 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 Allegheny, 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.