Upper Saint Clair, PA Weather Forecast
Local 7-day forecast
Scattered Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Upper Saint Clair, PA in one place.
Scattered showers and thunderstorms before 8am, then scattered showers and thunderstorms between 8am and 2pm, then showers and thunderstorms. Mostly cloudy, with a high near 81. Southwest wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Upper Saint Clair, PA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 10, 2026 9:19 AM EDT.
The active forecast window currently covers Jul 10 to Jul 16, 2026 for Upper Saint Clair, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 10 to Jul 16, 2026
- Latest sync
- Jul 10, 2026 9:19 AM EDT
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Upper Saint Clair
Wednesday looks like the warmest upcoming period in Upper Saint Clair at 91 degrees F.
Saturday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Wednesday at about 6 to 12 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 10, 2026 9:19 AM 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 midnight, then areas of fog. Mostly cloudy, with a low around 66. Southwest wind 0 to 6 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Areas of fog before 9am, then scattered showers and thunderstorms. Mostly cloudy, with a high near 83. North wind 1 to 7 mph. Chance of precipitation is 40%.
Isolated showers and thunderstorms before 7pm. Partly cloudy, with a low around 63. North wind around 7 mph. Chance of precipitation is 20%.
Mostly sunny, with a high near 84. Northeast wind around 7 mph.
Partly cloudy, with a low around 65.
Sunny, with a high near 86.
Mostly clear, with a low around 66.
Sunny, with a high near 90.
Mostly clear, with a low around 70.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 91.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69.
Mostly sunny, with a high near 89.
Mostly clear, with a low around 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 10
|
Scattered Showers And Thunderstorms
|
81°F |
7 mph
SW
|
|
Tonight
Jul 10
|
Chance Showers And Thunderstorms then Areas Of Fog
|
66°F |
0 to 6 mph
SW
|
|
Saturday
Jul 11
|
Areas Of Fog then Scattered Showers And Thunderstorms
|
83°F |
1 to 7 mph
N
|
|
Saturday Night
Jul 11
|
Isolated Showers And Thunderstorms then Partly Cloudy
|
63°F |
7 mph
N
|
|
Sunday
Jul 12
|
Mostly Sunny
|
84°F |
7 mph
NE
|
|
Sunday Night
Jul 12
|
Partly Cloudy
|
65°F |
1 to 6 mph
E
|
|
Monday
Jul 13
|
Sunny
|
86°F |
1 to 5 mph
SE
|
|
Monday Night
Jul 13
|
Mostly Clear
|
66°F |
3 mph
S
|
|
Tuesday
Jul 14
|
Sunny
|
90°F |
2 to 6 mph
SW
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
70°F |
6 mph
W
|
|
Wednesday
Jul 15
|
Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
6 to 12 mph
W
|
|
Wednesday Night
Jul 15
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
69°F |
3 to 10 mph
NW
|
|
Thursday
Jul 16
|
Mostly Sunny
|
89°F |
3 to 10 mph
W
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
69°F |
3 to 9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Upper Saint Clair.
