Allegheny County, PA Weather Forecast
County weather hub
Mostly Sunny then Slight Chance Rain Showers
Compare major city weather across Allegheny County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of rain showers after 5pm. Mostly sunny, with a high near 77. Southwest wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. 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 76 of 77 mapped cities in Allegheny County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 4:31 PM EDT
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Allegheny County
Wednesday looks like the warmest upcoming period in Allegheny County at 85 degrees F.
Friday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Monday at about 9 to 16 mph SW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 4:31 PM EDT
- 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 showers likely before 2am. Mostly cloudy, with a low around 43. Northwest wind 6 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunny, with a high near 63. North wind around 6 mph.
Mostly clear, with a low around 43.
Partly sunny, with a high near 80.
Mostly cloudy, with a low around 62.
A chance of rain showers after 8am. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
A chance of rain showers before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. 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 84. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. 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 85. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Mostly Sunny then Slight Chance Rain Showers
|
77°F |
6 to 14 mph
SW
|
|
Friday Night
Apr 10
|
Rain Showers Likely
|
43°F |
6 to 13 mph
NW
|
|
Saturday
Apr 11
|
Sunny
|
63°F |
6 mph
N
|
|
Saturday Night
Apr 11
|
Mostly Clear
|
43°F |
3 mph
NE
|
|
Sunday
Apr 12
|
Partly Sunny
|
80°F |
2 to 9 mph
S
|
|
Sunday Night
Apr 12
|
Mostly Cloudy
|
62°F |
6 to 9 mph
SW
|
|
Monday
Apr 13
|
Chance Rain Showers
|
77°F |
9 to 16 mph
SW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms
|
62°F |
7 to 14 mph
SW
|
|
Tuesday
Apr 14
|
Chance Rain Showers
|
84°F |
7 to 14 mph
SW
|
|
Tuesday Night
Apr 14
|
Chance Showers And Thunderstorms
|
65°F |
5 to 10 mph
SW
|
|
Wednesday
Apr 15
|
Chance Rain Showers
|
85°F |
7 to 14 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
62°F |
7 to 12 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Allegheny County.
Coverage
Forecast coverage currently spans 76 of 77 mapped cities in Allegheny County.
Largest mapped city population in this region: 299,226.
