Glenfield, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glenfield, a borough in Allegheny County, Pennsylvania.
Overnight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. Northeast wind around 5 mph.
7-day forecast for Glenfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Partly Cloudy | 5 mph NE | 1% |
| Saturday | 77°F | Partly Sunny | 5 mph E | 4% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely | 6 mph SE | 69% |
| Sunday | 76°F | Showers And Thunderstorms | 8 mph SW | 98% |
| Sunday Night | 56°F | Showers And Thunderstorms | 9 mph N | 98% |
| Monday | 66°F | Chance Rain Showers | 10 mph NE | 37% |
| Monday Night | 54°F | Rain Showers Likely | 9 to 13 mph NE | 59% |
| Tuesday | 62°F | Rain Showers Likely | 14 mph E | 60% |
| Tuesday Night | 52°F | Rain Showers Likely | 15 mph E | 63% |
| Wednesday | 61°F | Rain Showers Likely | 14 mph E | 63% |
| Wednesday Night | 52°F | Showers And Thunderstorms Likely | 9 to 13 mph E | 62% |
| Thursday | 64°F | Rain Showers Likely | 9 mph E | 58% |
| Thursday Night | 51°F | Chance Rain Showers | 5 to 8 mph NE | 25% |
| Friday | 67°F | Slight Chance Rain Showers | 5 to 8 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Glenfield (40.522, -80.141). Updated through the day.
Growing snapshot for Glenfield
Last spring frost
Apr 24
First fall frost
Oct 27
Growing season
186 days
Hardiness zone
7a
More local growing data for Glenfield: nearby ZIP 15225 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Emsworth L/D Ohio Rvr, Pa (1.3 mi from Glenfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.