Rose Valley, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rose Valley, a borough in Delaware County, Pennsylvania.
Overnight
51°F
Mostly Clear
Mostly clear, with a low around 51. South wind around 0 mph.
7-day forecast for Rose Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Clear | 0 mph | 1% |
| Wednesday | 73°F | Patchy Fog then Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 59°F | Mostly Cloudy | 5 mph S | 1% |
| Thursday | 73°F | Chance Light Rain | 5 to 10 mph S | 51% |
| Thursday Night | 62°F | Light Rain | 5 mph SW | 84% |
| Friday | 70°F | Light Rain | 0 to 5 mph N | 84% |
| Friday Night | 52°F | Light Rain | 0 to 5 mph NW | 79% |
| Saturday | 64°F | Mostly Sunny | 5 to 10 mph NW | 5% |
| Saturday Night | 44°F | Partly Cloudy | 5 to 10 mph W | 7% |
| Sunday | 60°F | Mostly Sunny | 5 to 10 mph NW | 5% |
| Sunday Night | 42°F | Mostly Clear | 5 mph W | 7% |
| Monday | 59°F | Sunny | 5 to 10 mph W | 7% |
| Monday Night | 41°F | Mostly Clear | 5 mph W | 4% |
| Tuesday | 63°F | Sunny | 5 to 10 mph SW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Rose Valley (39.895, -75.385). Updated through the day.
Growing snapshot for Rose Valley
Last spring frost
Mar 30
First fall frost
Nov 16
Growing season
230 days
Hardiness zone
7b
More local growing data for Rose Valley: nearby ZIP 19086 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Marcus Hook, Pa (5.5 mi from Rose Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.