Glenfield, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glenfield, a borough in Allegheny County, Pennsylvania.
Today
85°F
Sunny
Sunny, with a high near 85. East wind 1 to 5 mph.
7-day forecast for Glenfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 1 to 5 mph E | 0% |
| Tonight | 67°F | Mostly Clear | 5 mph E | 1% |
| Wednesday | 86°F | Mostly Sunny then Scattered Showers And Thunderstorms | 5 mph S | 39% |
| Wednesday Night | 69°F | Scattered Showers And Thunderstorms | 5 mph S | 50% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 2 to 7 mph SW | 68% |
| Thursday Night | 68°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 68% |
| Friday | 83°F | Showers And Thunderstorms | 3 to 7 mph SW | 83% |
| Friday Night | 67°F | Showers And Thunderstorms | 2 to 6 mph SW | 83% |
| Saturday | 83°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 7 mph SW | 48% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 48% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 18% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 22% |
| Monday | 86°F | Chance Rain Showers | 7 to 10 mph SW | 36% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 49% |
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 Aug 4, 2026.