Keystone, Pennsylvania Weather
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Click for Extreme Heat Warning for Keystone, Pennsylvania
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Weather Forecast for Keystone, Pennsylvania : Perry County
Issued: 12:54 pm EDT Jun 21, 2025 Latitude: 40.3261981 Longitude: -77.0549782 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Mostly Sunny on This Afternoon Mostly Cloudy on Tonight Sunny on Sunday Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday 50% chance of rain on Thursday 50% chance of rain on Friday
High: 88°F Low: 69°F High: 96°F High: 97°F High: 97°F High: 93°F High: 91°F High: 86°F
Low: 75°F Low: 75°F Low: 74°F Low: 73°F Low: 72°F  
Mostly Sunny Mostly Cloudy Sunny Sunny Sunny Mostly Sunny Rain Rain
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Current Conditions at
HARRISBURG - (KCXY)
84°
Clear
as of 11:56 AM EDST
Rel. Humidity: 51%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
6 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
MIDDLETWN/HARRISB - (KMDT)
82°
Mostly Clear
as of 11:56 AM EDST
Rel. Humidity: 61%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 7000ft, Few at 18000ft
Current Conditions at
COLLEGE PARK ARPT - (KCGS)
90°
Clear
Haze
as of 12:40 PM EDST
Rel. Humidity: 40%
Dew Point: 63°F
Visibility: 7 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
7 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
MUIR AAF - (KMUI)
86°
Feels like 88°F
Clear
as of 11:55 AM EDST
Rel. Humidity: 51%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
7 MPH
180° South
Cloud Level(s): Clear
Mostly Sunny on This Afternoon This Afternoon... Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph.
Mostly Cloudy on Tonight Tonight... Mostly cloudy, then gradually becoming clear, with a low around 69. South wind 3 to 6 mph.
Sunny on Sunday Sunday... Sunny and hot, with a high near 96. Heat index values as high as 104. West wind 5 to 8 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 75. West wind 3 to 5 mph.
Sunny on Monday Monday... Sunny and hot, with a high near 97. Calm wind becoming northwest around 5 mph in the afternoon.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 75.
Sunny on Tuesday Tuesday... Sunny and hot, with a high near 97.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 74.
Mostly Sunny on Wednesday Wednesday... Mostly sunny and hot, with a high near 93.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 73.
50% chance of rain Thursday Thursday... A chance of showers. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
40% chance of thunderstorms Thursday Night Thursday Night... A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 40%.
50% chance of rain Friday Friday... A chance of showers. Mostly sunny, with a high near 86. Chance of precipitation is 50%.
Current Radar Image


Sun Almanac for Keystone, Pennsylvania
Sunrise: 05:39 AM
Sunset: 8:42 PM
Civil Sunrise:05:06 AM
Civil Sunset: 9:15 PM
Nautical Sunrise: 04:23 AM
Nautical Sunset: 9:57 PM
Astro Sunrise: 03:34 AM
Astro Sunset: 10:46 PM
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