Castanea, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castanea, a community in Clinton County, Pennsylvania.
Today
72°F
Patchy Fog then Mostly Sunny
Patchy fog before 10am. Mostly sunny, with a high near 72. Southeast wind 1 to 7 mph.
7-day forecast for Castanea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Patchy Fog then Mostly Sunny | 1 to 7 mph SE | 2% |
| Tonight | 58°F | Light Rain | 6 to 9 mph S | 96% |
| Thursday | 71°F | Light Rain | 5 to 8 mph SW | 84% |
| Thursday Night | 48°F | Mostly Cloudy | 1 to 5 mph SW | 11% |
| Friday | 65°F | Partly Sunny | 3 mph SW | 12% |
| Friday Night | 43°F | Partly Cloudy | 3 mph W | 10% |
| Saturday | 55°F | Chance Light Rain | 5 to 10 mph W | 34% |
| Saturday Night | 38°F | Chance Light Rain | 6 to 12 mph W | 31% |
| Sunday | 54°F | Partly Sunny | 6 to 9 mph W | 6% |
| Sunday Night | 36°F | Partly Cloudy | 7 mph W | 7% |
| Monday | 54°F | Mostly Sunny | 6 to 10 mph W | 14% |
| Monday Night | 35°F | Partly Cloudy | 6 mph W | 12% |
| Tuesday | 59°F | Mostly Sunny | 5 to 10 mph W | 4% |
| Tuesday Night | 34°F | Partly Cloudy | 2 to 6 mph W | 4% |
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.