Glassport, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glassport, a borough 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 Glassport
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 5 mph NE | 5% |
| Saturday | 80°F | Partly Sunny | 5 mph E | 4% |
| Saturday Night | 66°F | Mostly Cloudy then Showers And Thunderstorms Likely | 7 mph SE | 59% |
| Sunday | 79°F | Showers And Thunderstorms | 9 mph SW | 94% |
| Sunday Night | 60°F | Showers And Thunderstorms | 9 mph N | 94% |
| Monday | 71°F | Chance Rain Showers | 12 mph NE | 41% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 12 mph E | 65% |
| Tuesday | 68°F | Showers And Thunderstorms Likely | 12 to 15 mph E | 74% |
| Tuesday Night | 55°F | Showers And Thunderstorms Likely | 15 mph E | 70% |
| Wednesday | 66°F | Showers And Thunderstorms Likely | 15 mph E | 65% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 8 to 15 mph E | 52% |
| Thursday | 67°F | Chance Rain Showers | 10 mph E | 40% |
| Thursday Night | 53°F | Slight Chance Rain Showers | 5 to 10 mph NE | 22% |
| Friday | 71°F | Slight Chance Rain Showers then Partly Sunny | 5 to 9 mph N | 17% |
Forecast source: National Weather Service (api.weather.gov) for Glassport (40.326, -79.886). Updated through the day.
Growing snapshot for Glassport
Last spring frost
May 2
First fall frost
Oct 20
Growing season
170 days
Hardiness zone
6b
More local growing data for Glassport: nearby ZIP 15045 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Mckeesport, Pa (1.6 mi from Glassport). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.