Southwest, PA Weather Forecast
Local 7-day forecast
Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Southwest, PA in one place.
Cloudy, with a low around 65. Northwest wind around 3 mph.
Local Weather Overview
This forecast page for Southwest, 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 19, 2026 7:36 AM EDT.
The active forecast window currently covers Jul 19 to Jul 25, 2026 for Southwest, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 19 to Jul 25, 2026
- Latest sync
- Jul 19, 2026 7:36 AM EDT
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Southwest
Tuesday looks like the warmest upcoming period in Southwest at 83 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 14 mph S.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 19, 2026 7:36 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
Partly sunny, with a high near 79. North wind around 6 mph.
Mostly clear, with a low around 56. Northeast wind 1 to 6 mph.
Sunny, with a high near 82. Southeast wind around 2 mph.
Mostly cloudy, with a low around 65. South wind 1 to 5 mph.
A chance of rain showers between 8am and 11am, then showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 100%.
Rain showers likely before 8am, then a chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 54. Chance of precipitation is 30%.
Sunny, with a high near 76.
Mostly clear, with a low around 54.
Mostly sunny, with a high near 81.
Partly cloudy, with a low around 60.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 19
|
Cloudy
|
65°F |
3 mph
NW
|
|
Sunday
Jul 19
|
Partly Sunny
|
79°F |
6 mph
N
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
56°F |
1 to 6 mph
NE
|
|
Monday
Jul 20
|
Sunny
|
82°F |
2 mph
SE
|
|
Monday Night
Jul 20
|
Mostly Cloudy
|
65°F |
1 to 5 mph
S
|
|
Tuesday
Jul 21
|
Showers And Thunderstorms
|
83°F |
6 to 14 mph
S
|
|
Tuesday Night
Jul 21
|
Showers And Thunderstorms
|
65°F |
9 to 14 mph
SW
|
|
Wednesday
Jul 22
|
Chance Showers And Thunderstorms
|
77°F |
9 to 14 mph
W
|
|
Wednesday Night
Jul 22
|
Chance Showers And Thunderstorms then Partly Cloudy
|
54°F |
0 to 12 mph
NW
|
|
Thursday
Jul 23
|
Sunny
|
76°F |
0 to 6 mph
N
|
|
Thursday Night
Jul 23
|
Mostly Clear
|
54°F |
1 to 5 mph
NE
|
|
Friday
Jul 24
|
Mostly Sunny
|
81°F |
2 mph
NE
|
|
Friday Night
Jul 24
|
Partly Cloudy
|
60°F |
2 mph
E
|
|
Saturday
Jul 25
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
82°F |
3 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Southwest.