Seneca, PA Weather & Growing Conditions
Overnight
52°F
Mostly Clear
Mostly clear, with a low around 52. Southeast wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Clear | 3 to 8 mph SE | 1% |
| Wednesday | 74°F | Partly Sunny | 9 mph S | 7% |
| Wednesday Night | 58°F | Light Rain | 8 to 13 mph S | 97% |
| Thursday | 66°F | Chance Light Rain then Mostly Sunny | 6 to 12 mph SW | 31% |
| Thursday Night | 45°F | Partly Cloudy | 5 mph SW | 1% |
| Friday | 60°F | Chance Light Rain | 6 mph SW | 31% |
| Friday Night | 40°F | Chance Light Rain | 2 to 7 mph W | 54% |
| Saturday | 51°F | Chance Light Rain | 9 mph W | 54% |
| Saturday Night | 34°F | Chance Light Rain | 8 mph W | 42% |
| Sunday | 52°F | Slight Chance Light Rain then Partly Sunny | 7 to 10 mph W | 15% |
| Sunday Night | 32°F | Partly Cloudy | 7 mph W | 14% |
| Monday | 53°F | Slight Chance Light Rain | 9 mph W | 23% |
| Monday Night | 33°F | Slight Chance Light Rain then Partly Cloudy | 5 to 8 mph SW | 18% |
| Tuesday | 57°F | Mostly Sunny | 10 mph SW | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Seneca, PA
Last spring frost
May 2
First fall frost
Oct 23
Growing season
171 days
Hardiness zone
6a
Explore more for Seneca, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Franklin, Pa (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.