New Derry, PA Weather Tomorrow

Discover tomorrow's New Derry weather along with a dependable 5 day forecast highlighting precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the New Derry area and around Westmoreland county, Pennsylvania.
Updated: Wed Sep 2nd 2026 7:45 AM EDT
New Derry, PA Weather – 9-2 – Sunny
91° / 72°
Sunny
In New Derry, a sunny day is likely with a high near 91°F and a low around 72°F. There's a very small chance of rainfall, only about 10%. Winds will be light at 10mph and gusts of 14.8mph at 8 AM. The humidity will be on the higher side, averaging about 76%, the maximum being 88% at 8 AM and 56% being its lowest at 3 PM. Barometric pressure is its highest of 30.08inHg at 10 AM, a lowest point of 29.97inHg at 6 PM with an avg 30.02inHg.
New Derry, PA Weather – 9-3 – Light Rain Shower
85° / 68°

Weather Tomorrow

Light Rain Shower
Rain showers are in the forecast for New Derry, with a high of 85°F and a low of 68°F. The chance of rain is 85% with an estimated 0.74in. Wind will be moderate, blowing around 11mph on average and gusts of 22.4mph at 8 AM. High humidity with average of 84% is anticipated, the maximum being 97% at 7 AM and 62% being its lowest at 3 PM. Barometric pressure is its highest of 30.05inHg at 9 AM, a lowest point of 29.91inHg at 7 PM with an avg 29.98inHg.
New Derry, PA Weather – 9-4 – Light Rain Shower
76° / 66°
Light Rain Shower
Highs will reach 76°F with lows near 66°F in New Derry, where rain showers are. The chance of rain is 92% with an estimated 0.41in. Winds will be light at 10mph and gusts of 21.3mph at 1 PM. High humidity with average of 94% is anticipated, the maximum being 99% at 7 AM and 77% being its lowest at 12 PM. Barometric pressure is its highest of 29.98inHg at 1 PM, a lowest point of 29.88inHg at 6 PM with an avg 29.94inHg.
New Derry, PA Weather – 9-5 – Scattered Showers
76° / 62°
Scattered Showers
Highs will reach 76°F with lows near 62°F in New Derry, where passing showers are. Rainfall predicted to have a 59% chance with an estimated 0.03in. Winds will be light at 7mph and gusts of 20.1mph at 8 PM. High humidity with average of 87% is anticipated, the maximum being 97% at 7 AM and 70% being its lowest at 2 PM. Barometric pressure is its highest of 29.99inHg at 10 PM, a lowest point of 29.88inHg at 6 PM with an avg 29.91inHg.
New Derry, PA Weather – 9-6 – Sunny
74° / 55°
Sunny
New Derry may see a sunny day, with daytime highs of 74°F and overnight lows near 55°F. There's a very small chance of rainfall, only about 8%. Winds will be light at 8mph and gusts of 20.4mph at 12 AM. The humidity will be on the higher side, averaging about 73%, the maximum being 95% at 7 AM and 48% being its lowest at 1 PM. Barometric pressure is its highest of 30.07inHg at 10 AM, a lowest point of 29.97inHg at 5 PM with an avg 30.02inHg.
New Derry, PA Weather – 9-7 – Sunny
76° / 61°
Sunny
It will be sunny in New Derry, with a high of 76°F and a low of 61°F. There might be light rainfall having a 11% chance. Winds will be light at 6mph and gusts of 16.6mph at 2 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 86% at 7 AM and 57% being its lowest at 2 PM. Barometric pressure is its highest of 30.11inHg at 8 AM, a lowest point of 30.02inHg at 5 PM with an avg 30.06inHg.

Currently

Sunny 72°F
30.06 inHg.
Barometer
86%
Humidity
SSW 8.6 mph
Wind
Sunny

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