West Newton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for West Newton, a borough in Westmoreland County, Pennsylvania.
This Afternoon
86°F
Sunny
Sunny, with a high near 86. Southeast wind around 5 mph.
7-day forecast for West Newton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Sunny | 5 mph SE | 0% |
| Tonight | 68°F | Partly Cloudy | 5 mph SE | 1% |
| Wednesday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph S | 29% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 37% |
| Thursday | 85°F | Showers And Thunderstorms | 3 to 8 mph SW | 78% |
| Thursday Night | 68°F | Showers And Thunderstorms | 2 to 7 mph S | 78% |
| Friday | 85°F | Showers And Thunderstorms | 3 to 9 mph SW | 82% |
| Friday Night | 67°F | Showers And Thunderstorms | 7 mph SW | 82% |
| Saturday | 84°F | Showers And Thunderstorms Likely | 9 mph SW | 58% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 8 mph SW | 58% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 24% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 24% |
| Monday | 87°F | Chance Showers And Thunderstorms | 9 to 14 mph SW | 39% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 49% |
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 Aug 4, 2026.