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Waterloo, Pennsylvania Weather Forecast
Waterloo, Pennsylvania Weather
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Weather Forecast for Waterloo, Pennsylvania : Juniata County
Issued: 2:51 am EST Jan 23, 2026 Latitude: 40.2884158 Longitude: -77.6944353 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Sunny on Today Cloudy on Tonight Mostly Cloudy on Saturday 100% chance of snow & sleet on Sunday 30% chance of snow on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday Partly Sunny on Thursday
High: 27°F Low: 1 °F High: 14°F High: 16°F High: 21°F High: 19°F High: 20°F High: 16°F
Low: 9 °F Low: 14°F Low: 0°F Low: 4°F Low: 2°F  
Mostly Sunny Cloudy Mostly Cloudy Snow & Sleet Snow Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
ALTOONA - (KAOO)
25°
Feels like 10°F
Clear
as of 4:53 AM EST
Rel. Humidity: 45%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
21 MPH
Gust: 30 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
HAGERSTOWN - (KHGR)
34°
Feels like 23°F
Clear
as of 4:53 AM EST
Rel. Humidity: 31%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
16 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
UNIVERSITY PARK - (KUNV)
25°
Feels like 11°F
Partly Cloudy
as of 5:15 AM EST
Rel. Humidity: 49%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
16 MPH
Gust: 25 MPH
260° West
Cloud Level(s): Scattered at 4500ft
Current Conditions at
HARRISBURG - (KCXY)
25°
Clear
as of 4:56 AM EST
Rel. Humidity: 53%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
3 MPH
260° West
Cloud Level(s): Clear
Mostly Sunny on Today Today... Mostly sunny, with a high near 27. West wind 8 to 13 mph, with gusts as high as 24 mph.

Cloudy on Tonight Tonight... Partly cloudy, with a low around 1. Wind chill values as low as -15. Northwest wind 9 to 16 mph, with gusts as high as 25 mph.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 14. Wind chill values as low as -10. Northwest wind 5 to 7 mph becoming calm in the afternoon.

90% chance of snow Saturday Night Saturday Night... Snow, mainly after 1am. The snow could be heavy at times. Low around 9. Wind chill values as low as zero. Calm wind becoming east 5 to 7 mph in the evening. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

100% chance of snow & sleet Sunday Sunday... Snow before 1pm, then snow, possibly mixed with sleet. The snow could be heavy at times. High near 16. East wind 5 to 7 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 6 to 10 inches possible.

90% chance of snow Sunday Night Sunday Night... Snow, mainly before 1am. Low around 14. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

30% chance of snow Monday Monday... A chance of snow before 1pm. Mostly cloudy, with a high near 21. Chance of precipitation is 30%.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 0.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 19.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 4.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 20.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 2.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 16.

Current Radar Image


Sun Almanac for Waterloo, Pennsylvania
Sunrise: 07:27 AM
Sunset: 5:18 PM
Civil Sunrise:06:58 AM
Civil Sunset: 5:48 PM
Nautical Sunrise: 06:25 AM
Nautical Sunset: 6:21 PM
Astro Sunrise: 05:52 AM
Astro Sunset: 6:53 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.