10-day forecast for Allegheny, PA: 50° to 83°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
82°
Best day: Sunday, August 9
80° · 0.71 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1083° / 65°0.12
Morning69°feels 69°
Afternoon80°feels 82°
Evening74°feels 75°
Overnight66°feels 66°
83 °
Allegheny, Monday, 10 August
Rain. High 83°, low 65°.
Pressure30.00 inHg
Wind10.6 mph SW
Humidity70%
Visibility6.2 mi
Dew point65°
Tue, 1180° / 63°0.71
Morning65°feels 66°
Afternoon79°feels 79°
Evening71°feels 72°
Overnight64°feels 65°
80 °
Allegheny, Tuesday, 11 August
Heavy rain. High 80°, low 63°.
Pressure29.97 inHg
Wind11.8 mph W
Humidity64%
Visibility6.2 mi
Dew point63°
Wed, 1277° / 64°0.05
Morning65°feels 66°
Afternoon77°feels 78°
Evening71°feels 72°
Overnight64°feels 65°
77 °
Allegheny, Wednesday, 12 August
Light rain. High 77°, low 64°.
Pressure29.83 inHg
Wind10.3 mph W
Humidity76%
Visibility6.2 mi
Dew point66°
Thu, 1374° / 58°0
Morning67°feels 67°
Afternoon72°feels 71°
Evening63°feels 62°
Overnight65°feels 66°
74 °
Allegheny, Thursday, 13 August
Partly cloudy. High 74°, low 58°.
Pressure29.88 inHg
Wind14.7 mph W
Humidity47%
Visibility—
Dew point51°
Fri, 1470° / 50°0
Morning60°feels 58°
Afternoon68°feels 67°
Evening59°feels 58°
Overnight54°feels 53°
70 °
Allegheny, Friday, 14 August
Overcast. High 70°, low 50°.
Pressure30.09 inHg
Wind9.8 mph NW
Humidity50%
Visibility—
Dew point48°
Sat, 1569° / 50°0
Morning58°feels 57°
Afternoon67°feels 66°
Evening58°feels 57°
Overnight54°feels 53°
69 °
Allegheny, Saturday, 15 August
Overcast. High 69°, low 50°.
Pressure30.21 inHg
Wind10.4 mph NW
Humidity42%
Visibility—
Dew point43°
Sun, 1669° / 50°0
Morning58°feels 57°
Afternoon63°feels 62°
Evening59°feels 58°
Overnight56°feels 55°
69 °
Allegheny, Sunday, 16 August
Overcast. High 69°, low 50°.
Pressure30.18 inHg
Wind3.2 mph SE
Humidity69%
Visibility—
Dew point52°
Mon, 1776° / 53°0
Morning64°feels 64°
Afternoon74°feels 74°
Evening63°feels 62°
Overnight59°feels 58°
76 °
Allegheny, Monday, 17 August
Mostly clear. High 76°, low 53°.
Pressure30.00 inHg
Wind8.6 mph NW
Humidity48%
Visibility—
Dew point53°
Tue, 1878° / 57°0
Morning67°feels 66°
Afternoon76°feels 76°
Evening64°feels 64°
Overnight61°feels 61°
78 °
Allegheny, Tuesday, 18 August
Clear. High 78°, low 57°.
Pressure30.03 inHg
Wind6.9 mph NW
Humidity44%
Visibility—
Dew point52°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Allegheny, PA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.