Forest Hills, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Forest Hills, a borough in Allegheny County, Pennsylvania.
Overnight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. Wind around 0 mph.
7-day forecast for Forest Hills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Partly Cloudy | 0 mph | 1% |
| Wednesday | 78°F | Partly Sunny | 0 to 10 mph S | 12% |
| Wednesday Night | 60°F | Light Rain | 12 mph S | 95% |
| Thursday | 69°F | Chance Light Rain then Partly Sunny | 8 to 14 mph SW | 44% |
| Thursday Night | 48°F | Partly Cloudy | 2 to 7 mph SW | 1% |
| Friday | 63°F | Partly Sunny then Slight Chance Light Rain | 3 to 9 mph SW | 20% |
| Friday Night | 42°F | Chance Light Rain | 6 to 9 mph W | 32% |
| Saturday | 53°F | Chance Light Rain | 9 to 14 mph W | 30% |
| Saturday Night | 37°F | Slight Chance Light Rain | 7 to 13 mph W | 24% |
| Sunday | 54°F | Partly Sunny | 7 to 16 mph W | 7% |
| Sunday Night | 35°F | Partly Cloudy | 8 to 12 mph W | 6% |
| Monday | 56°F | Mostly Sunny | 8 to 15 mph W | 11% |
| Monday Night | 36°F | Mostly Clear | 7 to 12 mph SW | 10% |
| Tuesday | 60°F | Mostly Sunny | 12 to 17 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Forest Hills (40.425, -79.854). Updated through the day.
Growing snapshot for Forest Hills
Last spring frost
Apr 5
First fall frost
Nov 10
Growing season
219 days
Hardiness zone
6b
More local growing data for Forest Hills: nearby ZIP 15221 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Braddock Lock 2, Pa (3 mi from Forest Hills). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.