Castanea, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castanea, a community in Clinton County, Pennsylvania.
This Afternoon
71°F
Mostly Sunny
Mostly sunny, with a high near 71. South wind around 7 mph.
7-day forecast for Castanea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Mostly Sunny | 7 mph S | 1% |
| Tonight | 58°F | Mostly Cloudy then Rain Showers | 6 to 9 mph S | 99% |
| Thursday | 70°F | Rain Showers | 6 to 9 mph SW | 91% |
| Thursday Night | 47°F | Partly Cloudy then Patchy Fog | 5 mph SW | 2% |
| Friday | 63°F | Patchy Fog then Partly Sunny | 5 mph SW | 14% |
| Friday Night | 42°F | Mostly Cloudy | 2 to 6 mph W | 14% |
| Saturday | 51°F | Chance Rain Showers | 6 to 12 mph W | 34% |
| Saturday Night | 39°F | Chance Rain Showers | 7 to 13 mph NW | 32% |
| Sunday | 55°F | Partly Sunny | 10 mph W | 5% |
| Sunday Night | 38°F | Partly Cloudy | 8 mph W | 2% |
| Monday | 54°F | Mostly Sunny | 7 to 12 mph W | 5% |
| Monday Night | 36°F | Partly Cloudy | 7 mph W | 2% |
| Tuesday | 59°F | Mostly Sunny | 6 to 10 mph W | 1% |
| Tuesday Night | 36°F | Partly Cloudy | 2 to 6 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Castanea (41.117, -77.427). Updated through the day.
Growing snapshot for Castanea
Last spring frost
Apr 30
First fall frost
Oct 20
Growing season
173 days
Hardiness zone
6b
More local growing data for Castanea: nearby ZIP 17750 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Lock Haven Sewage Plt, Pa (5.7 mi from Castanea). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.