Imperial, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Imperial, a community in Allegheny County, Pennsylvania.
Today
85°F
Sunny
Sunny, with a high near 85. East wind around 5 mph.
7-day forecast for Imperial
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 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 | 43% |
| Wednesday Night | 68°F | Scattered Showers And Thunderstorms | 5 mph S | 50% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 3 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 then Chance Showers And Thunderstorms | 6 mph SW | 83% |
| Saturday | 82°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 8 mph SW | 51% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 7 mph SW | 51% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 19% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 23% |
| Monday | 86°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 35% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 9 mph SW | 48% |
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 Aug 4, 2026.