Deer Lake, Pennsylvania Weather
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Weather Forecast for Deer Lake, Pennsylvania : Fayette County
Issued: 4:02 pm EDT Sep 3, 2025 Latitude: 39.8500758 Longitude: -79.5892082 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Thursday Friday Saturday Sunday Monday Tuesday
Sunny on This Afternoon Mostly Clear on Tonight 90% chance of thunderstorms on Thursday Mostly Sunny on Friday 60% chance of rain on Saturday Mostly Sunny on Sunday Sunny on Monday Sunny on Tuesday
High: 78°F Low: 55°F High: 71°F High: 77°F High: 64°F High: 66°F High: 69°F High: 73°F
Low: 54°F Low: 55°F Low: 46°F Low: 42°F Low: 44°F  
Sunny Mostly Clear Thunderstorms Mostly Sunny Rain Mostly Sunny Sunny Sunny
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Current Conditions at
MORGANTOWN - (KMGW)
81°
Mostly Clear
as of 3:53 PM EDST
Rel. Humidity: 36%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
8 MPH
190° South
Cloud Level(s): Few at 7000ft
Current Conditions at
LATROBE - (KLBE)
82°
Partly Cloudy
as of 3:45 PM EDST
Rel. Humidity: 34%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
10 MPH
210° Southwest
Cloud Level(s): Scattered at 5500ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
82°
Mostly Clear
as of 3:53 PM EDST
Rel. Humidity: 37%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.83 in.
Flight Rule: VFR
Wind Data
8 MPH
Gust: 21 MPH
220° Southwest
Cloud Level(s): Few at 6500ft
Current Conditions at
JOHNSTOWN - (KJST)
75°
Partly Cloudy
as of 3:54 PM EDST
Rel. Humidity: 33%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
9 MPH
200° South
Cloud Level(s): Scattered at 6500ft, Scattered at 9000ft
Sunny on This Afternoon This Afternoon... Sunny, with a high near 78. Southwest wind around 5 mph.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 55. Light south wind.
90% chance of thunderstorms Thursday Thursday... Showers and possibly a thunderstorm. High near 71. Southwest wind 6 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
60% chance of thunderstorms Thursday Night Thursday Night... Showers and thunderstorms likely before 11pm, then a chance of showers. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 54. Light southwest wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 77. Southwest wind 3 to 8 mph. Winds could gust as high as 21 mph.
60% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then showers likely after 5am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
60% chance of rain Saturday Saturday... Showers likely, mainly before 8am. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 46.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 66.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 42.
Sunny on Monday Monday... Sunny, with a high near 69.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 44.
Sunny on Tuesday Tuesday... Sunny, with a high near 73.
Current Radar Image


Sun Almanac for Deer Lake, Pennsylvania
Sunrise: 06:49 AM
Sunset: 7:46 PM
Civil Sunrise:06:21 AM
Civil Sunset: 8:14 PM
Nautical Sunrise: 05:48 AM
Nautical Sunset: 8:47 PM
Astro Sunrise: 05:14 AM
Astro Sunset: 9:21 PM
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