Brownstown, Pennsylvania Weather
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Click for Special Weather Statement for Brownstown, Pennsylvania
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Weather Forecast for Brownstown, Pennsylvania : Armstrong County
Issued: 10:03 pm EDT Sep 4, 2025 Latitude: 40.5483989 Longitude: -79.5130985 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Patchy Fog on Tonight Clearing on Friday 80% chance of thunderstorms on Saturday Mostly Sunny on Sunday Morning Fog on Monday Morning Fog on Tuesday Sunny on Wednesday Patchy Fog on Thursday
Low: 55°F High: 81°F High: 65°F High: 67°F High: 69°F High: 74°F High: 77°F High: 77°F
Low: 56°F Low: 47°F Low: 43°F Low: 43°F Low: 47°F Low: 50°F  
Patchy Fog Clearing Thunderstorms Mostly Sunny Morning Fog Morning Fog Sunny Patchy Fog
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Current Conditions at
LATROBE - (KLBE)
59°
Mostly Cloudy
Mist
as of 10:35 PM EDST
Rel. Humidity: 100%
Dew Point: 59°F
Visibility: 4 Miles
Pressure: 29.88 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 7500ft
Current Conditions at
STEWART FIELD - (KIDI)
57°
Mostly Cloudy
as of 10:35 PM EDST
Rel. Humidity: 100%
Dew Point: 57°F
Visibility: 7 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Broken at 3100ft, Broken at 4100ft, Broken at 7500ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
59°
Cloudy
Fog
as of 10:25 PM EDST
Rel. Humidity: 100%
Dew Point: 59°F
Visibility: 1/4 Miles
Pressure: 29.85 in.
Flight Rule: IFR
Wind Data
5 MPH
150° Southeast
Current Conditions at
BUTLER COUNTY - (KBTP)
55°
Cloudy
Mist
as of 10:43 PM EDST
Rel. Humidity: 100%
Dew Point: 55°F
Visibility: 3 Miles
Pressure: 29.86 in.
Flight Rule: MVFR
Wind Data
5 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 3200ft
Patchy Fog on Tonight Tonight... Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. Calm wind.
Clearing on Friday Friday... Cloudy through mid morning, then gradual clearing, with a high near 81. Southwest wind 7 to 14 mph.
80% chance of thunderstorms Friday Night Friday Night... Showers and thunderstorms likely, then showers after 2am. Low around 56. Southwest wind 3 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
80% chance of thunderstorms Saturday Saturday... Showers before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers after 2pm. High near 65. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
30% chance of rain Saturday Night Saturday Night... A chance of showers or sprinkles before 8pm, then a chance of sprinkles between 8pm and 2am. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 47. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 67.
Morning Fog on Sunday Night Sunday Night... Patchy fog after 1am. Otherwise, mostly clear, with a low around 43.
Morning Fog on Monday Monday... Areas of fog before 9am. Otherwise, sunny, with a high near 69.
Morning Fog on Monday Night Monday Night... Patchy fog after 2am. Otherwise, mostly clear, with a low around 43.
Morning Fog on Tuesday Tuesday... Patchy fog before 7am. Otherwise, sunny, with a high near 74.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 47.
Sunny on Wednesday Wednesday... Sunny, with a high near 77.
Patchy Fog on Wednesday Night Wednesday Night... Patchy fog. Otherwise, mostly clear, with a low around 50.
Patchy Fog on Thursday Thursday... Patchy fog. Otherwise, mostly sunny, with a high near 77.
Current Radar Image


Sun Almanac for Brownstown, Pennsylvania
Sunrise: 06:49 AM
Sunset: 7:45 PM
Civil Sunrise:06:21 AM
Civil Sunset: 8:13 PM
Nautical Sunrise: 05:48 AM
Nautical Sunset: 8:46 PM
Astro Sunrise: 05:13 AM
Astro Sunset: 9:20 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.