Southwest, Pennsylvania Weather
your sport, your way
Air Sports Net on FacebookAir Sports Net on Google +Air Sports Net on TwitterReceive RSS UpdatesReceive Email Updates

Click for Hazardous Weather Outlook for Southwest, Pennsylvania
Change location by the zip code or city,state: or search for other weather forecast locations in Pennsylvania by name.
Weather Forecast for Southwest, Pennsylvania : Westmoreland County
Issued: 1:04 pm EDT Jul 3, 2025 Latitude: 40.1989597 Longitude: -79.5208718 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Independence Day Saturday Sunday Monday Tuesday Wednesday
20% chance of thunderstorms on This Afternoon Mostly Clear on Tonight Sunny on Independence Day Sunny on Saturday Sunny on Sunday 30% chance of thunderstorms on Monday 40% chance of thunderstorms on Tuesday 30% chance of on Wednesday
High: 85°F Low: 60°F High: 84°F High: 89°F High: 91°F High: 89°F High: 86°F High: 86°F
Low: 61°F Low: 66°F Low: 69°F Low: 68°F Low: 66°F  
Thunderstorms Mostly Clear Sunny Sunny Sunny Thunderstorms Thunderstorms Partly Sunny
-
Current Conditions at
LATROBE - (KLBE)
82°
Mostly Clear
as of 12:45 PM EDST
Rel. Humidity: 54%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
9 MPH
270° West
Cloud Level(s): Few at 4500ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
81°
Mostly Clear
as of 12:53 PM EDST
Rel. Humidity: 51%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
8 MPH
Gust: 17 MPH
310° Northwest
Cloud Level(s): Few at 5500ft, Few at 7000ft
Current Conditions at
STEWART FIELD - (KIDI)
81°
Partly Cloudy
as of 12:55 PM EDST
Rel. Humidity: 61%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 18 MPH
290° West
Cloud Level(s): Scattered at 4300ft, Scattered at 5000ft, Scattered at 7000ft
Current Conditions at
JOHNSTOWN - (KJST)
75°
Partly Cloudy
as of 12:54 PM EDST
Rel. Humidity: 60%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
13 MPH
280° West
Cloud Level(s): Scattered at 3900ft, Scattered at 5500ft
20% chance of thunderstorms This Afternoon This Afternoon... Isolated showers and thunderstorms between 3pm and 5pm. Sunny, with a high near 85. West wind around 9 mph. Chance of precipitation is 20%.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 60. West wind around 5 mph becoming calm in the evening.
Sunny on Independence Day Independence Day... Sunny, with a high near 84. Calm wind becoming northwest around 5 mph.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 61. Calm wind.
Sunny on Saturday Saturday... Sunny, with a high near 89. Calm wind.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 66.
Sunny on Sunday Sunday... Sunny and hot, with a high near 91.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 69.
30% chance of thunderstorms Monday Monday... Scattered showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
30% chance of thunderstorms Monday Night Monday Night... Scattered showers and thunderstorms before 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
40% chance of thunderstorms Tuesday Tuesday... Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. Chance of precipitation is 40%.
30% chance of thunderstorms Tuesday Night Tuesday Night... Scattered showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
30% chance of Wednesday Wednesday... Scattered showers. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Current Radar Image


Sun Almanac for Southwest, Pennsylvania
Sunrise: 05:54 AM
Sunset: 8:51 PM
Civil Sunrise:05:21 AM
Civil Sunset: 9:24 PM
Nautical Sunrise: 04:40 AM
Nautical Sunset: 10:05 PM
Astro Sunrise: 03:51 AM
Astro Sunset: 10:53 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.