Imperial, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Imperial, a community in Allegheny County, Pennsylvania.
This Afternoon
76°F
Partly Sunny
Partly sunny, with a high near 76. North wind around 8 mph.
7-day forecast for Imperial
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Partly Sunny | 8 mph N | 10% |
| Tonight | 58°F | Partly Cloudy | 3 to 7 mph NE | 10% |
| Saturday | 78°F | Partly Sunny | 5 mph E | 7% |
| Saturday Night | 65°F | Mostly Cloudy then Showers And Thunderstorms Likely | 6 mph SE | 57% |
| Sunday | 76°F | Showers And Thunderstorms | 8 mph SW | 95% |
| Sunday Night | 59°F | Showers And Thunderstorms | 9 mph N | 95% |
| Monday | 67°F | Chance Rain Showers | 10 mph NE | 38% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 13 mph NE | 60% |
| Tuesday | 65°F | Showers And Thunderstorms Likely | 13 mph E | 67% |
| Tuesday Night | 55°F | Showers And Thunderstorms Likely | 15 mph E | 67% |
| Wednesday | 63°F | Showers And Thunderstorms Likely | 14 mph E | 66% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 9 to 14 mph E | 51% |
| Thursday | 64°F | Chance Rain Showers | 10 mph E | 41% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 5 to 8 mph NE | 19% |
Forecast source: National Weather Service (api.weather.gov) for Imperial (40.454, -80.250). Updated through the day.
Growing snapshot for Imperial
Last spring frost
Apr 23
First fall frost
Oct 23
Growing season
181 days
Hardiness zone
6b
More local growing data for Imperial: nearby ZIP 15126 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Pittsburgh Intl Ap, Pa (4.2 mi from Imperial). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.