Greenock, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Greenock, a community in Allegheny County, Pennsylvania.
Tonight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. Northeast wind around 5 mph.
7-day forecast for Greenock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 5 mph NE | 5% |
| Saturday | 80°F | Mostly Sunny | 5 mph E | 3% |
| Saturday Night | 65°F | Mostly Cloudy then Showers And Thunderstorms Likely | 7 mph SE | 59% |
| Sunday | 79°F | Showers And Thunderstorms | 7 to 10 mph SW | 95% |
| Sunday Night | 60°F | Showers And Thunderstorms | 9 mph N | 95% |
| Monday | 71°F | Chance Rain Showers | 12 mph NE | 42% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 12 mph E | 67% |
| Tuesday | 68°F | Showers And Thunderstorms | 12 to 15 mph E | 75% |
| Tuesday Night | 54°F | Showers And Thunderstorms Likely | 13 to 16 mph E | 71% |
| Wednesday | 65°F | Showers And Thunderstorms Likely | 15 mph E | 64% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 8 to 15 mph E | 52% |
| Thursday | 67°F | Chance Rain Showers | 10 mph E | 41% |
| Thursday Night | 53°F | Slight Chance Rain Showers | 5 to 10 mph NE | 24% |
| Friday | 71°F | Slight Chance Rain Showers then Partly Sunny | 5 to 9 mph N | 19% |
Forecast source: National Weather Service (api.weather.gov) for Greenock (40.313, -79.804). Updated through the day.
Growing snapshot for Greenock
Last spring frost
May 2
First fall frost
Oct 20
Growing season
170 days
More local growing data for Greenock: nearby ZIP 15047 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Mckeesport, Pa (3.8 mi from Greenock). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.