Allegheny County, PA Weather Forecast
County weather hub
Light Rain
Compare major city weather across Allegheny County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain. Mostly cloudy, with a high near 51. Northwest wind 2 to 14 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Allegheny County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 77 of 77 mapped cities in Allegheny County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Nov 12 to Nov 17, 2026
- Latest sync
- Nov 11, 2026 9:54 AM EST
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Allegheny County
Thursday looks like the warmest upcoming period in Allegheny County at 51 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Saturday at about 8 to 15 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Nov 11, 2026 9:54 AM EST
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- PBZ
- Radar station
- KPBZ
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain likely before 1am. Mostly cloudy, with a low around 35. Northwest wind 7 to 13 mph. Chance of precipitation is 60%.
A chance of rain after 7am. Mostly cloudy, with a high near 45. Northwest wind 8 to 13 mph. Chance of precipitation is 30%.
A chance of rain before 7pm, then a slight chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
A slight chance of snow before 7am, then a chance of rain and snow. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.
A chance of rain before 7pm. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Mostly cloudy, with a high near 47.
Mostly cloudy, with a low around 34.
Partly sunny, with a high near 49.
Partly cloudy, with a low around 31.
Mostly sunny, with a high near 50.
Partly cloudy, with a low around 29.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Nov 12
|
Light Rain
|
51°F |
2 to 14 mph
NW
|
|
Thursday Night
Nov 12
|
Light Rain Likely
|
35°F |
7 to 13 mph
NW
|
|
Friday
Nov 13
|
Chance Light Rain
|
45°F |
8 to 13 mph
NW
|
|
Friday Night
Nov 13
|
Slight Chance Rain And Snow
|
32°F |
5 to 9 mph
NW
|
|
Saturday
Nov 14
|
Chance Rain And Snow
|
45°F |
8 to 15 mph
NW
|
|
Saturday Night
Nov 14
|
Chance Light Rain then Mostly Cloudy
|
34°F |
5 to 10 mph
W
|
|
Sunday
Nov 15
|
Mostly Cloudy
|
47°F |
5 to 9 mph
NW
|
|
Sunday Night
Nov 15
|
Mostly Cloudy
|
34°F |
1 to 5 mph
NW
|
|
Monday
Nov 16
|
Partly Sunny
|
49°F |
0 to 5 mph
NW
|
|
Monday Night
Nov 16
|
Partly Cloudy
|
31°F |
2 mph
N
|
|
Tuesday
Nov 17
|
Mostly Sunny
|
50°F |
2 mph
N
|
|
Tuesday Night
Nov 17
|
Partly Cloudy
|
29°F |
1 mph
N
|
Major City Forecasts
Live forecast snapshots for major cities across Allegheny County.
Coverage
Forecast coverage currently spans 77 of 77 mapped cities in Allegheny County.
Largest mapped city population in this region: 299,226.
