Allegheny County, PA Weather Forecast
County weather hub
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Compare major city weather across Allegheny County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms likely before 11am, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Southwest wind 7 to 13 mph. Chance of precipitation is 70%. 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
- Jun 10 to Jun 16, 2026
- Latest sync
- Jun 9, 2026 11:05 PM EDT
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Allegheny County
Thursday looks like the warmest upcoming period in Allegheny County at 92 degrees F.
Monday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Friday at about 7 to 14 mph SW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 9, 2026 11:05 PM EDT
- Coverage
- 7 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
A chance of showers and thunderstorms before 8pm, then showers and thunderstorms likely between 8pm and 9pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Southwest wind 6 to 12 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 92. Heat index values as high as 102. Southwest wind 7 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Southwest wind 5 to 9 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 11am, then showers and thunderstorms. Mostly cloudy, with a high near 90. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 90%.
Sunny, with a high near 86.
Mostly clear, with a low around 64.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Partly sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jun 10
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
87°F |
7 to 13 mph
SW
|
|
Wednesday Night
Jun 10
|
Chance Showers And Thunderstorms
|
72°F |
6 to 12 mph
SW
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
92°F |
7 to 13 mph
SW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms Likely
|
73°F |
5 to 9 mph
SW
|
|
Friday
Jun 12
|
Showers And Thunderstorms
|
90°F |
7 to 14 mph
SW
|
|
Friday Night
Jun 12
|
Showers And Thunderstorms
|
63°F |
2 to 9 mph
W
|
|
Saturday
Jun 13
|
Sunny
|
86°F |
1 to 8 mph
W
|
|
Saturday Night
Jun 13
|
Mostly Clear
|
64°F |
1 to 7 mph
W
|
|
Sunday
Jun 14
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
86°F |
2 to 10 mph
SW
|
|
Sunday Night
Jun 14
|
Chance Showers And Thunderstorms
|
64°F |
3 to 8 mph
W
|
|
Monday
Jun 15
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
82°F |
3 to 10 mph
NW
|
|
Monday Night
Jun 15
|
Chance Showers And Thunderstorms
|
60°F |
3 to 10 mph
SW
|
|
Tuesday
Jun 16
|
Chance Showers And Thunderstorms
|
79°F |
5 to 12 mph
W
|
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.
