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New Derry, Pennsylvania Weather Forecast
New Derry, Pennsylvania Weather
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Weather Forecast for New Derry, Pennsylvania : Westmoreland County
Issued: 5:46 am EST Jan 9, 2026 Latitude: 40.3506252 Longitude: -79.3164247 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
90% chance of rain on Today 20% chance of rain on Tonight 90% chance of rain on Saturday 80% chance of rain & snow on Sunday Partly Sunny on Monday Mostly Sunny on Tuesday 60% chance of rain on Wednesday 40% chance of snow on Thursday
High: 62°F Low: 38°F High: 50°F High: 35°F High: 37°F High: 44°F High: 42°F High: 33°F
Low: 30°F Low: 24°F Low: 27°F Low: 34°F Low: 25°F  
Rain Rain Rain Rain & Snow Partly Sunny Mostly Sunny Rain Snow
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Current Conditions at
LATROBE - (KLBE)
59°
Clear
as of 6:47 AM EST
Rel. Humidity: 51%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 25 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
STEWART FIELD - (KIDI)
50°
Feels like 45°F
Mostly Cloudy
as of 6:55 AM EST
Rel. Humidity: 61%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 22 MPH
150° Southeast
Cloud Level(s): Broken at 6500ft
Current Conditions at
JOHNSTOWN - (KJST)
43°
Feels like 35°F
Mostly Clear
as of 6:54 AM EST
Rel. Humidity: 75%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
16 MPH
Gust: 26 MPH
160° South
Cloud Level(s): Few at 4400ft
Current Conditions at
BUTLER COUNTY - (KBTP)
Cloudy
as of 6:56 AM EST
Wind Data
Calm
90% chance of rain Today Today... Rain, mainly between 10am and 5pm. High near 62. Southwest wind around 14 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
20% chance of rain Tonight Tonight... A slight chance of rain before 8pm. Patchy fog between 3am and 5am. Otherwise, mostly cloudy, with a low around 38. West wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
90% chance of rain Saturday Saturday... Rain. Patchy fog before 7am. High near 50. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
80% chance of rain & snow Saturday Night Saturday Night... Rain before 1am, then a slight chance of rain and snow. Low around 30. West wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
80% chance of rain & snow Sunday Sunday... A chance of rain and snow before 10am, then snow. High near 35. Breezy, with a west wind 13 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
20% chance of snow Sunday Night Sunday Night... A slight chance of snow before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 20%.
Partly Sunny on Monday Monday... Partly sunny, with a high near 37.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 27.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 44.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 34.
60% chance of rain Wednesday Wednesday... Rain likely. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
50% chance of rain & snow Wednesday Night Wednesday Night... A chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.
40% chance of snow Thursday Thursday... A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 40%.
Current Radar Image


Sun Almanac for New Derry, Pennsylvania
Sunrise: 07:40 AM
Sunset: 5:09 PM
Civil Sunrise:07:10 AM
Civil Sunset: 5:39 PM
Nautical Sunrise: 06:36 AM
Nautical Sunset: 6:13 PM
Astro Sunrise: 06:03 AM
Astro Sunset: 6:46 PM
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