Waterloo, Pennsylvania Weather
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Weather Forecast for Waterloo, Pennsylvania : Franklin County
Issued: 1:05 pm EDT Sep 4, 2025 Latitude: 39.7320387 Longitude: -77.5208236 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
80% chance of thunderstorms on This Afternoon 40% chance of thunderstorms on Tonight Morning Fog on Friday 80% chance of thunderstorms on Saturday Mostly Sunny on Sunday Sunny on Monday Sunny on Tuesday Sunny on Wednesday Mostly Sunny on Thursday
High: 82°F Low: 59°F High: 84°F High: 81°F High: 72°F High: 71°F High: 73°F High: 75°F High: 77°F
Low: 65°F Low: 54°F Low: 48°F Low: 47°F Low: 49°F Low: 51°F  
Thunderstorms Thunderstorms Morning Fog Thunderstorms Mostly Sunny Sunny Sunny Sunny Mostly Sunny
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Current Conditions at
HAGERSTOWN - (KHGR)
77°
Clear
as of 3:53 PM EDST
Rel. Humidity: 65%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
9 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
FREDERICK MUNICIPAL AIR - (KFDK)
73°
Partly Cloudy
as of 3:46 PM EDST
Rel. Humidity: 83%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: VFR
Wind Data
6 MPH
270° West
Cloud Level(s): Scattered at 7500ft
Current Conditions at
MARTINSBURG - (KMRB)
79°
Mostly Clear
as of 3:53 PM EDST
Rel. Humidity: 61%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.75 in.
Flight Rule: VFR
Wind Data
6 MPH
230° Southwest
Cloud Level(s): Few at 12000ft
Current Conditions at
COLLEGE PARK ARPT - (KCGS)
72°
Cloudy
Light Rain
as of 4:15 PM EDST
Rel. Humidity: 83%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: VFR
Wind Data
8 MPH
160° South
Cloud Level(s): Scattered at 3700ft, Broken at 10000ft, Solid Overcast at 12000ft
80% chance of thunderstorms This Afternoon This Afternoon... Showers and possibly a thunderstorm. High near 82. Southwest wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
40% chance of thunderstorms Tonight Tonight... A chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 59. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Morning Fog on Friday Friday... Patchy fog before 9am. Otherwise, sunny, with a high near 84. Calm wind becoming southwest 5 to 9 mph in the morning.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 65. South wind 3 to 6 mph.
80% chance of thunderstorms Saturday Saturday... A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 81. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
80% chance of thunderstorms Saturday Night Saturday Night... Showers and possibly a thunderstorm before 8pm, then a chance of showers. Low around 54. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 72.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 48.
Sunny on Monday Monday... Sunny, with a high near 71.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 47.
Sunny on Tuesday Tuesday... Sunny, with a high near 73.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 49.
Sunny on Wednesday Wednesday... Sunny, with a high near 75.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 51.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 77.
Current Radar Image


Sun Almanac for Waterloo, Pennsylvania
Sunrise: 06:41 AM
Sunset: 7:36 PM
Civil Sunrise:06:14 AM
Civil Sunset: 8:04 PM
Nautical Sunrise: 05:41 AM
Nautical Sunset: 8:37 PM
Astro Sunrise: 05:08 AM
Astro Sunset: 9:10 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.