Castanea, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castanea, a community in Clinton County, Pennsylvania.
This Afternoon
70°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny, with a high near 70. Southeast wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Castanea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Slight Chance Rain Showers | 3 mph SE | 15% |
| Tonight | 60°F | Rain Showers | 3 to 8 mph SE | 93% |
| Sunday | 72°F | Rain Showers | 7 mph S | 98% |
| Sunday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph N | 32% |
| Monday | 67°F | Partly Sunny | 7 mph NE | 14% |
| Monday Night | 50°F | Chance Rain Showers | 8 mph NE | 54% |
| Tuesday | 61°F | Chance Rain Showers | 7 mph E | 54% |
| Tuesday Night | 48°F | Chance Rain Showers | 7 mph E | 42% |
| Wednesday | 58°F | Chance Rain Showers | 8 mph E | 25% |
| Wednesday Night | 47°F | Slight Chance Rain Showers | 7 mph E | 17% |
| Thursday | 60°F | Slight Chance Rain Showers | 6 mph E | 18% |
| Thursday Night | 46°F | Slight Chance Rain Showers | 5 mph NE | 23% |
| Friday | 64°F | Chance Rain Showers | 2 to 7 mph N | 25% |
| Friday Night | 48°F | Chance Rain Showers | 3 to 7 mph N | 25% |
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
Nearby towns & communities
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McElhattan
Mill Hall
Monument
Nittany
North Bend
Orviston
Renovo
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Snydertown
South Renovo
Tylersville
Woolrich
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 Sep 20, 2026.