West Newton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for West Newton, a borough in Westmoreland County, Pennsylvania.
Tonight
65°F
Showers And Thunderstorms
A slight chance of rain showers between 8pm and 9pm, then showers and thunderstorms. Mostly cloudy, with a low around 65. Southeast wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for West Newton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Showers And Thunderstorms | 3 to 7 mph SE | 83% |
| Sunday | 79°F | Showers And Thunderstorms | 7 to 12 mph SW | 97% |
| Sunday Night | 56°F | Showers And Thunderstorms Likely | 7 to 10 mph N | 61% |
| Monday | 71°F | Chance Rain Showers | 12 mph NE | 44% |
| Monday Night | 55°F | Showers And Thunderstorms Likely | 12 mph NE | 67% |
| Tuesday | 67°F | Showers And Thunderstorms Likely | 10 to 16 mph E | 71% |
| Tuesday Night | 52°F | Showers And Thunderstorms Likely | 16 mph E | 74% |
| Wednesday | 64°F | Rain Showers Likely | 16 mph E | 70% |
| Wednesday Night | 51°F | Chance Rain Showers | 10 to 16 mph E | 50% |
| Thursday | 66°F | Chance Rain Showers | 12 mph E | 50% |
| Thursday Night | 49°F | Slight Chance Rain Showers | 5 to 10 mph E | 18% |
| Friday | 69°F | Slight Chance Rain Showers | 5 to 10 mph NE | 15% |
| Friday Night | 49°F | Partly Cloudy | 5 to 9 mph N | 13% |
| Saturday | 71°F | Mostly Sunny | 5 to 10 mph N | 10% |
Forecast source: National Weather Service (api.weather.gov) for West Newton (40.207, -79.771). Updated through the day.
Growing snapshot for West Newton
Last spring frost
Apr 27
First fall frost
Oct 22
Growing season
177 days
Hardiness zone
6b
More local growing data for West Newton: nearby ZIP 15089 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Donora 1 Sw, Pa (7.7 mi from West Newton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.