Plum, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plum, a borough in Allegheny County, Pennsylvania.
Today
86°F
Sunny
Sunny, with a high near 86. East wind around 5 mph.
7-day forecast for Plum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 5 mph E | 0% |
| Tonight | 66°F | Mostly Clear | 6 mph SE | 1% |
| Wednesday | 87°F | Partly Sunny then Scattered Showers And Thunderstorms | 2 to 7 mph SE | 26% |
| Wednesday Night | 68°F | Scattered Showers And Thunderstorms | 6 mph SE | 50% |
| Thursday | 86°F | Showers And Thunderstorms Likely | 5 to 9 mph SW | 73% |
| Thursday Night | 68°F | Showers And Thunderstorms Likely | 7 mph SW | 73% |
| Friday | 85°F | Showers And Thunderstorms | 5 to 9 mph SW | 81% |
| Friday Night | 67°F | Showers And Thunderstorms | 3 to 8 mph SW | 81% |
| Saturday | 84°F | Showers And Thunderstorms Likely | 6 to 9 mph SW | 57% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 57% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 24% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 7 to 10 mph SW | 24% |
| Monday | 87°F | Chance Showers And Thunderstorms | 9 to 14 mph SW | 40% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 7 to 12 mph SW | 50% |
Forecast source: National Weather Service (api.weather.gov) for Plum (40.502, -79.748). Updated through the day.
Growing snapshot for Plum
Last spring frost
Apr 22
First fall frost
Oct 25
Growing season
186 days
Hardiness zone
6b
More local growing data for Plum: nearby ZIP 15239 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Murrysville 2 Sw, Pa (5.1 mi from Plum). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.